PURLINS & CLADDING RAILSpurlin may be detailed as every other purlin in the run. Checking of the...

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Producers and stockists for the roofing & cladding industry

A complete service in one location

Lightweight Sigma Purlins and Cladding Rails

Cladco have been manufacturing and supplying cladding and a range of buildingcomponents since 2000, gaining a wealth of experience for the requirements forthe industrial and commercial sector of the construction industry.

Investment in machinery and processes,have allowed Cladco to become a majorsupplier to the Scottish market, and furtherafield, with their range of profiled metalcladding, standing seam, flashings, purlins, fixings & accessories. Cladco are a one-stop-shop for all building needs.

Cladco's range of purlins are available asSigma section, in 7 depths - 145mm,175mm, 205mm, 225mm, 235mm, 265mmand 300mm - to suit most buildingrequirements. The sections are available ina range of thicknesses, for use in singlespan, double span or sleeved systems.

Testing has been carried out at OxfordBrookes University, with the load/spantables developed from those tests. Thisgives the specifier confidence in knowingthat Cladco’s range of purlins & claddingrails have been fully tested and accredited.

Developed for purlins and cladding rails,the Cladco Sigma sections may be used asa lightweight flooring support system, assingle or compound sections. Cladco'stechnical department should be contacted,to discuss any such application.

2

Overview of Purlin Systems

Single span purlins are the simplestarrangement, with single bay length sections,jointed at each rafter.

Double span purlins span across three supports(rafters), giving an economical design andspeed of erection. Care must be taken whenspecifying a double span purlin system, toensure that the loads on each rafter are evenlydistributed by staggering the system joints. Thiswill necessitate single span purlins at alternatepurlin lines, in end bays.

Heavy end bay purlins may be introduced tocater for high wind uplifts at verges.

Sleeved purlins are a variation on the singlespan system, with sleeve sections at each joint.This system involves more components, butincreases the load carrying capacity of the singlespan system, by adding stiffness over each joint.

When specifying a purlin system, all loads,including local and variable loads, must bechecked. In particular, local wind coefficientsat verges, eaves and apexes, and drifting snowloads, may affect the system chosen.

In certain circumstances, anti-sag bars andapex ties are required. The load/span tablesshow where sag rods are needed, and aregenerally required on large bay widths, underwind reversal conditions. On roof slopes greaterthan 15 degrees, we would recommend thatsag bars and apex ties are always installed. On large bays (>6m), we recommend that apexties are installed, to give stability to the purlinsystem during the roof cladding operation.

The load/span tables show where sag rods arerequired for normal profiled metal roof cladding.However, other roofing systems, which do notprovide lateral support to the top flange of thepurlin, may necessitate the use of sag bars.Please consult our technical department forguidance, should there be any doubt.

Cladco’s range of purlins are complemented by cleats, which may be bolted or welded to the rafter, and by sleeves, whichincrease the load carrying capacity of the purlin section.

Simple bolted connections, make site assembly easy, and the choice of systems allows the specifier to choose the rightarrangement for loadings, site restrictions, and erection processes.

The material used for the manufacture of Cladco’s range of purlins is Hot Dipped Galvanised Steel to BSEN 10326:2004 & BS10143:1993. The minimum grade of steel used is S450GD, with Z275 zinc coating.

Steel is a re-usable product, and Cladco’s system, with simple bolted connections, makes dismantling straightforward. The sections may then be re-used on another building, either as they are, or cut and re-drilled to suit. Steel is one of the planet’smost recycled material, with a large percentage of new steel, being manufactured from recycled steel.

Cladco’s range of purlins & cladding rails are available in almost any length – please consult our technical department fordetails, should long lengths be needed. Transport restrictions may be the limiting factor to the length supplied, so all aspectsof the supply process need to be checked.

3

Verge Flashing

Gutter

Cladco Sigma Purlins

Spacer System

Insulation

28.5mm

65mm

13mm

145mm115mm* 22mm

28.5mm

65mm

13mm

175mm145mm*

22mm

28.5mm

65mm

13mm

205mm175mm*

22mm32m

m 62m

m 92m

m

Standard Size Range

SECTION REFERENCENominal Sigma Sigma Sigma Sigma Sigma SigmaDimensions 145x65x1.6 145x65x2.0 175x65x1.6 175x65x2.0 205x65x1.6 205x65x2.0

Weight kg/m 3.76 4.68 4.13 5.14 4.50 5.60

Depth mm 145 145 175 175 205 205

Flange mm 65 65 65 65 65 65

t mm 1.6 2.0 1.6 2.0 1.6 2.0

Section Properties

Area cm2 479.32 595.95 526.12 654.75 572.92 713.55

Iyy cm4 154.40 190.12 240.28 296.41 349.84 432.15

Izz cm4 20.32 24.79 20.32 24.79 20.32 24.79

iy cm 5.68 5.65 6.76 6.73 7.81 7.78

iz cm 2.06 2.04 1.97 1.95 1.88 1.86

Cz cm 22.86 22.65 22.87 22.68 22.88 22.71

My,Rk kNm 9.22 11.40 11.52 14.27 13.83 17.17

Cladco's range of purlins and sheeting rails areavailable in 7 section depths, and in thicknessesof 1.6mm up to 3.0mm. This provides thespecifier with the opportunity to select aneconomical section for a project.

Purlins and sheeting rails can be specified asSingle Span, Sleeved or Double- or Multi-span.When specifying Double-or Multi-spanconditions, care should be taken to staggerjoints, thus avoiding over-loading the structure,at semi-continuous supports. This will involvethe use of single-span sections on alternatelines. This is more critical when designing purlinarrangements.

When considering purlin lengths, considerationmust be given to handling on site, and safeerection onto the structure. Site conditions maydictate the use of shorter sections.

All Cladco purlins and sheeting rails arepunched with 14mm diameter holes asstandard, on gauge lines, shown later in thisbrochure.

The Cladco range is complimented byaccessories such as cleats, sag ties for purlins,vertical struts and diagonal sag wires forsheeting rails, and sleeves.

Cladco's Technical department can assist in thechoice of section, and advise on the merits ofeach system for a specific project.

4

28.5mm

65mm

13mm

225mm195mm*

* Hole Centres

22mm

115m

m

28.5mm

65mm

13mm

235mm

205mm*

22mm12

2mm

28.5mm

65mm

13mm

265mm235mm*

22mm

152m

m

28.5mm

65mm

13mm

300mm270mm*

22mm

187m

m


Weight kg/m 4.74 5.91 7.34 4.86 6.06 7.53

Depth mm 225 225 225 235 235 235

Flange mm 65 65 65 65 65 65

t mm 1.6 2.0 2.5 1.6 2.0 2.5

Section Properties

Area cm2 604.12 752.75 934.93 619.72 772.35 959.53

Iyy cm4 437.07 540.32 664.43 485.18 600.01 738.14

Izz cm4 20.32 24.80 29.99 20.32 24.80 29.99

iy cm 8.51 8.47 8.43 8.85 8.81 8.77

iz cm 1.83 1.81 1.79 1.81 1.79 1.77

Cz cm 22.89 22.73 22.53 22.89 22.73 22.54

My,Rk kNm 15.33 19.10 24.94 16.06 20.05 26.26


Weight kg/m 6.52 8.11 9.67 7.06 8.79 10.48

Depth mm 265 265 265 300 300 300

Flange mm 65 65 65 65 65 65

t mm 2.0 2.5 3.0 2.0 2.5 3.0

Section Properties

Area cm2 831.15 1033.33 1231.52 899.75 1119.43 1335.12

Iyy cm4 802.61 988.58 1167.06 1086.45 1339.75 1583.54

Izz cm4 24.80 29.99 34.77 24.80 30.00 34.78

iy cm 9.83 9.78 9.73 10.99 10.94 10.89

iz cm 1.73 1.70 1.68 1.66 1.64 1.61

Cz cm 22.75 22.57 22.39 22.77 22.60 22.44

My,Rk kNm 22.86 30.21 37.21 25.99 34.79 43.25

5

Cladco Single Span Purlins are the simplest arrangement available, although the amount of steelused is more than in any other system.

Single Span Purlins

Penultimate RafterGable Rafter

Gable Overhang

Gable Rafter Inner RafterPenultimate Rafter

End Bay Inner Bay

Inner Rafter

Joint

4mm gap

Verge Overhang

Joint

Joint Joint

Joint Joint

Joint Joint

Single Span Purlins are simple beams, connected at each rafter line, via a cleat bolted or weldedto the rafter back. Loading is evenly distributed at each support.

The specifier must ensure that all loadings are taken into account when specifying the purlin size.Dead loads are made up of the weight of the cladding supported by the purlin, plus any other itemsof plant or equipment, which are placed on or below the roof, and are connected to the purlins.Lighting may also be suspended from the purlins. The safe load tables only take account of the selfweight of the purlins. All other loads must be calculated.

Superimposed loads are those loads which are variable. These are generally snow loading, whichcan be calculated using BS6399. Care must be taken to ensure that any drifting snow loads areincluded in the calculations. These occur at changes in roof level, valley conditions, or around largeitems of roof mounted plant. Superimposed loading must also take account of access formaintenance or cleaning, etc.

There may be other items supported by the purlins, which add to the loading, either dead orsuperimposed, so care must be taken to ensure that all such loads are considered.

Wind loading must be calculated for uplift conditions, ensuring that all local coefficients are considered.

Single Span Purlin Arrangement

6

Verge overhang

Gable rafter

Penultimate rafter

Inner rafter

cleat (bolted or welded to rafter)

4mm gap

4mm gap

End Bay Purlin

Inner Bay Purlin

End Bay

GableOverhang

50 50

Overhangless 50mm

Bay width less 100mm

Bay width less 100mm

48 2

48 2482

Rafter centre line

Rafter centre line

Inner Bay

Single Span Purlin Arrangement

The first purlin, in a run of single span purlins, mayextend over the gable rafter, to form a vergeoverhang. Alternatively, if a parapet exists, the endpurlin may be detailed as every other purlin in therun. Checking of the details at verges andparapets is essential, to ensure that the correctlength of purlin, with the necessary holearrangement, is specified to suit the specificsituation. Cladco can assist in determining thepurlin arrangement at verges and parapets, ifprovided with the Architects &/or Engineersdrawings.

Care should be taken when detailing single spanpurlins, to ensure that any variation in bay width istaken into account, as this will alter the length ofpurlin required. In general, the purlin length, for allbays apart from end bays, will be the bay width,less 6mm. Holes will be positioned at a standarddimension from the end of the purlin (27mm) tosuit the Cladco purlin cleats supplied.

Cladco’s Technical Department can assist indetailing purlins, provided full details of thebuilding are supplied. Purlin details for each spancondition are shown.

7

Single span purlins are the simplest arrangement, but load capacity is less than for other systems.

Specifiers must ensure that all loads are taken into account, and that deflection limits areconsidered. Please refer to the notes at the start of this section.

Single Span Purlin Load Tables

Section 145x65x2.0

Section 175x65x1.6

Span Total Working Loads Ultimate U.D.L. in kN / spanWorking Allowable loading in kN/sq m Deflection Gravity Uplift - metal claddingU.D.L. Purlin centres in millimetres Span/180 Load Number of anti sag rods

(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 20.27 5.63 4.83 4.22 3.75 3.38 3.07 2.82 2.60 2.41 21.03 30.41 21.46 30.41 30.413.50 15.45 3.68 3.15 2.76 2.45 2.21 2.01 1.84 1.70 1.58 15.45 26.07 16.72 24.84 26.074.00 11.83 2.46 2.11 1.85 1.64 1.48 1.34 1.23 1.14 1.06 11.83 22.81 13.61 19.83 22.814.50 9.35 1.73 1.48 1.30 1.15 1.04 0.94 0.87 0.80 0.74 9.35 20.27 11.45 16.22 20.275.00 7.57 1.26 1.08 0.95 0.84 0.76 0.69 7.57 18.25 9.86 13.56 17.945.50 6.26 0.95 0.81 0.71 6.26 16.59 8.66 11.57 15.32


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 17.56 4.18 3.58 3.14 2.79 2.51 2.28 2.09 1.93 1.79 19.53 26.34 16.54 24.92 26.344.00 14.95 3.11 2.67 2.34 2.08 1.87 1.70 1.56 1.44 1.33 14.95 23.05 13.43 19.84 23.054.50 11.81 2.19 1.88 1.64 1.46 1.31 1.19 1.09 1.01 0.94 11.81 20.49 11.27 16.17 20.495.00 9.57 1.59 1.37 1.20 1.06 0.96 0.87 0.80 0.74 0.68 9.57 18.44 9.70 13.49 18.025.50 7.91 1.20 1.03 0.90 0.80 0.72 7.91 16.76 8.51 11.48 15.366.00 6.64 0.92 0.79 0.69 6.64 15.36 7.58 9.94 13.23

The load/span tables for Single Span, Double Span and Sleeved Purlins are shown for each sectionsize and thickness.

The values shown are working loads, using a load factor of 1.5, and the deflection governed limit.Maximum deflection is set at span/180. These are the values that specifiers should use, whencomparing against unfactored loads.

The figures shown in the columns headed ‘Gravity Load’, refer to the total downward load (dead &imposed) at the Ultimate Limit State. It is the maximum load acting on a single span, that the purlincould take before collapsing, and should therefore be compared against the factored dead +imposed loads. It takes no account of the deflection limit.

Purlin Load Span Table Notes

8

Section 145x65x1.6Span Total Working Loads Ultimate U.D.L. in kN / span

Working Allowable loading in kN/sq m Deflection Gravity Uplift - metal claddingU.D.L. Purlin centres in millimetres Span/180 Load Number of anti sag rods

(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 16.39 4.55 3.90 3.41 3.04 2.73 2.48 2.28 2.10 1.95 17.08 24.59 17.20 24.59 24.593.50 12.55 2.99 2.56 2.24 1.99 1.79 1.63 1.49 1.38 1.28 12.55 21.07 13.36 20.05 21.074.00 9.61 2.00 1.72 1.50 1.33 1.20 1.09 1.00 0.92 0.86 9.61 18.44 10.85 15.98 18.444.50 7.59 1.41 1.20 1.05 0.94 0.84 0.77 0.70 7.59 16.39 9.11 13.04 16.395.00 6.15 1.02 0.88 0.77 0.68 6.15 14.75 7.84 10.88 14.495.50 5.08 0.77 5.08 13.41 6.88 9.27 12.36

Section 205x65x2.0



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 18.43 3.84 3.29 2.88 2.56 2.30 2.09 1.92 1.77 1.65 21.77 27.65 15.98 23.65 27.654.50 16.39 3.03 2.60 2.28 2.02 1.82 1.66 1.52 1.40 1.30 17.20 24.58 13.41 19.26 24.585.00 13.93 2.32 1.99 1.74 1.55 1.39 1.27 1.16 1.07 1.00 13.93 22.12 11.54 16.06 21.515.50 11.51 1.74 1.50 1.31 1.16 1.05 0.95 0.87 0.81 0.75 11.51 20.11 10.13 13.67 18.326.00 9.67 1.34 1.15 1.01 0.90 0.81 0.73 0.67 9.67 18.43 9.02 11.84 15.766.50 8.24 1.06 0.91 0.79 0.70 8.24 17.02 8.14 10.41 13.71



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 21.75 5.18 4.44 3.88 3.45 3.11 2.82 2.59 2.39 2.22 24.09 32.63 20.65 30.88 32.634.00 18.44 3.84 3.29 2.88 2.56 2.31 2.10 1.92 1.77 1.65 18.44 28.55 16.79 24.61 28.554.50 14.57 2.70 2.31 2.02 1.80 1.62 1.47 1.35 1.25 1.16 14.57 25.38 14.11 20.09 25.385.00 11.80 1.97 1.69 1.48 1.31 1.18 1.07 0.98 0.91 0.84 11.80 22.84 12.15 16.78 22.325.50 9.75 1.48 1.27 1.11 0.99 0.89 0.81 0.74 0.68 9.75 20.76 10.67 14.30 19.046.00 8.20 1.14 0.98 0.85 0.76 0.68 8.20 19.03 9.52 12.40 16.41


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 22.90 4.77 4.09 3.58 3.18 2.86 2.60 2.39 2.20 2.04 26.89 34.35 19.97 29.36 34.354.50 20.35 3.77 3.23 2.83 2.51 2.26 2.06 1.88 1.74 1.62 21.25 30.53 16.78 23.94 30.535.00 17.21 2.87 2.46 2.15 1.91 1.72 1.56 1.43 1.32 1.23 17.21 27.48 14.45 19.98 26.675.50 14.22 2.15 1.85 1.62 1.44 1.29 1.18 1.08 0.99 0.92 14.22 24.98 12.69 17.02 22.736.00 11.95 1.66 1.42 1.24 1.11 1.00 0.91 0.83 0.77 0.71 11.95 22.90 11.32 14.76 19.576.50 10.18 1.31 1.12 0.98 0.87 0.78 0.71 10.18 21.14 10.22 12.99 17.04

9



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 16.35 2.73 2.34 2.04 1.82 1.64 1.49 1.36 1.26 1.17 17.41 24.53 12.74 17.74 23.785.50 14.38 2.18 1.87 1.63 1.45 1.31 1.19 1.09 1.01 0.93 14.38 22.30 11.18 15.09 20.246.00 12.09 1.68 1.44 1.26 1.12 1.01 0.92 0.84 0.77 0.72 12.09 20.44 9.97 13.07 17.426.50 10.30 1.32 1.13 0.99 0.88 0.79 0.72 10.30 18.87 8.99 11.49 15.157.00 8.88 1.06 0.91 0.79 0.70 8.88 17.52 8.19 10.24 13.327.50 7.74 0.86 0.74 7.74 16.35 7.53 9.22 11.82



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 20.37 3.40 2.91 2.55 2.26 2.04 1.85 1.70 1.57 1.46 21.52 30.56 15.98 22.09 29.545.50 17.78 2.69 2.31 2.02 1.80 1.62 1.47 1.35 1.24 1.15 17.78 27.78 14.03 18.82 25.156.00 14.94 2.08 1.78 1.56 1.38 1.25 1.13 1.04 0.96 0.89 14.94 25.46 12.51 16.32 21.656.50 12.73 1.63 1.40 1.22 1.09 0.98 0.89 0.82 0.75 0.70 12.73 23.50 11.30 14.36 18.857.00 10.98 1.31 1.12 0.98 0.87 0.78 0.71 10.98 21.83 10.30 12.80 16.587.50 9.56 1.06 0.91 0.80 0.71 9.56 20.37 9.47 11.54 14.73

Section 235x65x2.5

Section 235x65x2.0

Section 265x65x2.0


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.50 19.44 2.95 2.53 2.21 1.96 1.77 1.61 1.47 1.36 1.26 19.75 29.16 12.95 17.96 24.606.00 16.59 2.30 1.98 1.73 1.54 1.38 1.26 1.15 1.06 0.99 16.59 26.73 11.50 15.48 21.086.50 14.14 1.81 1.55 1.36 1.21 1.09 0.99 0.91 0.84 0.78 14.14 24.68 10.35 13.56 18.267.00 12.19 1.45 1.24 1.09 0.97 0.87 0.79 0.73 12.19 22.92 9.41 12.03 15.997.50 10.62 1.18 1.01 0.88 0.79 0.71 10.62 21.39 8.63 10.80 14.148.00 9.33 0.97 0.83 0.73 9.33 20.05 7.97 9.78 12.63



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.50 19.04 3.53 3.02 2.64 2.35 2.12 1.92 1.76 1.63 1.51 23.85 28.56 13.78 20.55 27.825.00 17.14 2.86 2.45 2.14 1.90 1.71 1.56 1.43 1.32 1.22 19.32 25.70 11.79 17.02 23.355.50 15.58 2.36 2.02 1.77 1.57 1.42 1.29 1.18 1.09 1.01 15.97 23.37 10.30 14.39 19.796.00 13.42 1.86 1.60 1.40 1.24 1.12 1.02 0.93 0.86 0.80 13.42 21.42 9.14 12.39 16.946.50 11.43 1.47 1.26 1.10 0.98 0.88 0.80 0.73 0.68 11.43 19.77 8.22 10.84 14.677.00 9.86 1.17 1.01 0.88 0.78 0.70 9.86 18.36 7.47 9.61 12.83


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.00 20.41 2.84 2.43 2.13 1.89 1.70 1.55 1.42 1.31 1.22 20.41 35.01 15.10 19.98 26.966.50 17.39 2.23 1.91 1.67 1.49 1.34 1.22 1.11 1.03 0.96 17.39 32.32 13.61 17.54 23.377.00 15.00 1.79 1.53 1.34 1.19 1.07 0.97 0.89 0.82 0.77 15.00 30.01 12.39 15.60 20.497.50 13.06 1.45 1.24 1.09 0.97 0.87 0.79 0.73 13.06 28.01 11.37 14.03 18.168.00 11.48 1.20 1.03 0.90 0.80 0.72 11.48 26.26 10.52 12.74 16.248.50 10.17 1.00 0.85 0.75 10.17 24.71 9.78 11.66 14.65


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.50 18.75 2.40 2.06 1.80 1.60 1.44 1.31 1.20 1.11 1.03 18.91 28.13 9.19 12.82 18.157.00 16.31 1.94 1.66 1.46 1.29 1.16 1.06 0.97 0.90 0.83 16.31 26.12 8.31 11.27 15.767.50 14.21 1.58 1.35 1.18 1.05 0.95 0.86 0.79 0.73 0.68 14.21 24.38 7.58 10.03 13.828.00 12.49 1.30 1.11 0.98 0.87 0.78 0.71 12.49 22.86 6.98 9.02 12.248.50 11.06 1.08 0.93 0.81 0.72 11.06 21.51 6.46 8.18 10.949.00 9.86 0.91 0.78 0.69 9.86 20.32 6.02 7.49 9.86

10



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 26.46 4.41 3.78 3.31 2.94 2.65 2.41 2.20 2.04 1.89 26.46 39.91 20.85 28.38 37.815.50 21.87 3.31 2.84 2.48 2.21 1.99 1.81 1.66 1.53 1.42 21.87 36.28 18.35 24.23 32.186.00 18.37 2.55 2.19 1.91 1.70 1.53 1.39 1.28 1.18 1.09 18.37 33.26 16.40 21.06 27.716.50 15.66 2.01 1.72 1.51 1.34 1.20 1.09 1.00 0.93 0.86 15.66 30.70 14.82 18.58 24.147.00 13.50 1.61 1.38 1.21 1.07 0.96 0.88 0.80 0.74 0.69 13.50 28.51 13.52 16.60 21.267.50 11.76 1.31 1.12 0.98 0.87 0.78 0.71 11.76 26.61 12.44 14.98 18.92

Section 300x65x3.0



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

8.00 20.84 2.17 1.86 1.63 1.45 1.30 1.18 1.09 1.00 0.93 20.84 34.79 10.56 13.40 17.928.50 18.46 1.81 1.55 1.36 1.21 1.09 0.99 0.90 0.84 0.78 18.46 32.75 9.79 12.19 16.049.00 16.47 1.52 1.31 1.14 1.02 0.91 0.83 0.76 0.70 16.47 30.93 9.13 11.17 14.489.50 14.78 1.30 1.11 0.97 0.86 0.78 0.71 14.78 29.30 8.55 10.31 13.17

10.00 13.34 1.11 0.95 0.83 0.74 13.34 27.84 8.05 9.57 12.0610.50 12.10 0.96 0.82 0.72 12.10 26.51 7.60 8.93 11.10



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.50 18.48 2.05 1.76 1.54 1.37 1.23 1.12 1.03 0.95 0.88 19.23 27.72 8.57 11.33 15.638.00 16.90 1.76 1.51 1.32 1.17 1.06 0.96 0.88 0.81 0.75 16.90 25.99 7.88 10.19 13.848.50 14.97 1.47 1.26 1.10 0.98 0.88 0.80 0.73 0.68 14.97 24.46 7.30 9.25 12.379.00 13.35 1.24 1.06 0.93 0.82 0.74 0.67 13.35 23.10 6.80 8.46 11.149.50 11.98 1.05 0.90 0.79 0.70 11.98 21.88 6.37 7.79 10.11

10.00 10.82 0.90 0.77 0.68 10.82 20.79 5.98 7.21 9.24


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

8.50 21.82 2.14 1.83 1.60 1.43 1.28 1.17 1.07 0.99 0.92 21.82 40.71 12.27 15.10 19.639.00 19.46 1.80 1.54 1.35 1.20 1.08 0.98 0.90 0.83 0.77 19.46 38.44 11.45 13.86 17.759.50 17.47 1.53 1.31 1.15 1.02 0.92 0.84 0.77 0.71 17.47 36.42 10.73 12.81 16.17

10.00 15.77 1.31 1.13 0.99 0.88 0.79 0.72 15.77 34.60 10.10 11.90 14.8310.50 14.30 1.13 0.97 0.85 0.76 0.68 14.30 32.95 9.54 11.12 13.6711.00 13.03 0.99 0.85 0.74 13.03 31.45 9.03 10.43 12.68



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.50 20.66 2.30 1.97 1.72 1.53 1.38 1.25 1.15 1.06 0.98 20.66 39.70 12.52 16.06 21.578.00 18.15 1.89 1.62 1.42 1.26 1.13 1.03 0.95 0.87 0.81 18.15 37.21 11.54 14.51 19.188.50 16.08 1.58 1.35 1.18 1.05 0.95 0.86 0.79 0.73 0.68 16.08 35.03 10.71 13.22 17.209.00 14.34 1.33 1.14 1.00 0.89 0.80 0.72 14.34 33.08 9.98 12.13 15.559.50 12.87 1.13 0.97 0.85 0.75 0.68 12.87 31.34 9.35 11.21 14.17

10.00 11.62 0.97 0.83 0.73 11.62 29.77 8.80 10.41 12.99



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 20.09 2.39 2.05 1.79 1.59 1.43 1.30 1.20 1.10 1.02 20.09 34.53 11.01 14.64 20.217.50 17.50 1.94 1.67 1.46 1.30 1.17 1.06 0.97 0.90 0.83 17.50 32.22 10.06 13.06 17.758.00 15.38 1.60 1.37 1.20 1.07 0.96 0.87 0.80 0.74 0.69 15.38 30.21 9.27 11.78 15.758.50 13.62 1.34 1.14 1.00 0.89 0.80 0.73 13.62 28.43 8.59 10.71 14.119.00 12.15 1.13 0.96 0.84 0.75 0.68 12.15 26.85 8.01 9.82 12.739.50 10.91 0.96 0.82 0.72 10.91 25.44 7.50 9.06 11.58

11

Double span purlins are semi-continuous over a support. For that reason, joints have to bestaggered to avoid overloading of rafters. It is an economical system in terms of steel content, andnumber of components.

Double Span Purlins

Double-span purlins use less steel than single span purlins, but are longer, with joints at alternaterafters. Care must be taken to ensure that double span purlins are correctly detailed. Joints are tobe staggered, so that continuity over supports (rafters) is not at the same support in each line ofpurlins.

The amount of steel in double span purlin systems, and the number of components is reduced.However, longer sections may make handling more difficult.

Deflections are reduced, and connections have less bolts.

Penultimate Rafter

Single Span Purlin

End Bay Inner Bay

Double Span Purlin

Single Span Purlin Double Span Purlin

Double Span Purlin Double Span Purlin

Double Span Purlin Double Span Purlin

Gable Rafter Inner Rafter Inner Rafter

Joint

Verge Overhang

Joint

Joint

Joint

Joint Joint

Double Span Purlin Arrangement

Note: Joints staggered

Gable Overhang

Gable Overhang


Double Span Purlin

End Bay Inner Span Inner Bay

Gable Overhang


Double Span PurlinSingle Span Purlin

End Bay Inner Span Inner Bay

12

Double Span Purlin Arrangement

As with single span purlins, the end purlins in each run can be detailed for a verge overhang or for a parapet condition. Cladco’s Technical Department can advise on purlin arrangements, if provided with the building details.

Verge overhang

Gable rafter

Penultimate rafter

Inner rafter

4 bolt connector

2 bolt connector4mm gap

4mm gap

4mm gap

End Bay Inner Bay

Double Span Inner Bays Purlin

Double Span End Bays PurlinGable

Overhang

Overhang less 50mm 50 50 5050 48 2

Bay width less 100mm Bay width less 100mm

Rafter Rafter Rafter

Rafter Rafter Rafter

2 48 50 50

Inner Bay Inner Bay

Inner Bay less 100mm Inner Bay less 100mm 48 2

Loadings must be carefully checked, as detailed for single span purlins. It is the designer’s responsibility to check that all relevantloadings have been taken into account, and the correct purlin size and arrangement has been specified.

13

Double span purlins provide a more economical use of steel, but involve longer lengths of purlins.

Specifiers must ensure that all loads are taken into account, and that the purlin joints are staggered,to ensure an even loading across the roof supports. Please refer to the notes at the start of thissection, and to the layout details shown.

Double Span Purlin Load Tables



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 16.39 4.55 3.90 3.41 3.04 2.73 2.48 2.28 2.10 1.95 75.65 24.59 24.59 24.59 24.593.50 14.05 3.35 2.87 2.51 2.23 2.01 1.82 1.67 1.54 1.43 55.58 21.07 21.07 21.07 21.074.00 12.29 2.56 2.20 1.92 1.71 1.54 1.40 1.28 1.18 1.10 42.56 18.44 18.04 18.44 18.444.50 10.93 2.02 1.73 1.52 1.35 1.21 1.10 1.01 0.93 0.87 33.62 16.39 15.25 16.39 16.395.00 9.83 1.64 1.40 1.23 1.09 0.98 0.89 0.82 0.76 0.70 27.24 14.75 13.21 14.75 14.755.50 8.94 1.35 1.16 1.02 0.90 0.81 0.74 0.68 22.51 13.41 11.65 13.41 13.416.00 8.20 1.14 0.98 0.85 0.76 0.68 18.91 12.29 10.42 12.29 12.296.50 7.57 0.97 0.83 0.73 16.12 11.35 9.43 11.35 11.357.00 7.02 0.84 0.72 13.90 10.54 8.62 10.54 10.54



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 20.27 5.63 4.83 4.22 3.75 3.38 3.07 2.82 2.60 2.41 93.16 30.41 30.41 30.41 30.413.50 17.38 4.14 3.55 3.10 2.76 2.48 2.26 2.07 1.91 1.77 68.44 26.07 26.07 26.07 26.074.00 15.21 3.17 2.72 2.38 2.11 1.90 1.73 1.58 1.46 1.36 52.40 22.81 22.66 22.81 22.814.50 13.52 2.50 2.15 1.88 1.67 1.50 1.37 1.25 1.16 1.07 41.40 20.27 19.18 20.27 20.275.00 12.16 2.03 1.74 1.52 1.35 1.22 1.11 1.01 0.94 0.87 33.54 18.25 16.62 18.25 18.255.50 11.06 1.68 1.44 1.26 1.12 1.01 0.91 0.84 0.77 0.72 27.72 16.59 14.67 16.59 16.596.00 10.14 1.41 1.21 1.06 0.94 0.84 0.77 0.70 23.29 15.21 13.13 15.21 15.216.50 9.36 1.20 1.03 0.90 0.80 0.72 19.84 14.04 11.89 14.04 14.047.00 8.69 1.03 0.89 0.78 0.69 17.11 13.03 10.87 13.03 13.03



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 17.56 4.18 3.58 3.14 2.79 2.51 2.28 2.09 1.93 1.79 86.50 26.34 26.34 26.34 26.344.00 15.36 3.20 2.74 2.40 2.13 1.92 1.75 1.60 1.48 1.37 66.23 23.05 22.31 23.05 23.054.50 13.66 2.53 2.17 1.90 1.69 1.52 1.38 1.26 1.17 1.08 52.33 20.49 18.85 20.49 20.495.00 12.29 2.05 1.76 1.54 1.37 1.23 1.12 1.02 0.95 0.88 42.39 18.44 16.32 18.44 18.445.50 11.17 1.69 1.45 1.27 1.13 1.02 0.92 0.85 0.78 0.73 35.03 16.76 14.39 16.76 16.766.00 10.24 1.42 1.22 1.07 0.95 0.85 0.78 0.71 29.43 15.36 12.88 15.36 15.366.50 9.45 1.21 1.04 0.91 0.81 0.73 25.08 14.18 11.66 14.18 14.187.00 8.78 1.05 0.90 0.78 0.70 21.63 13.17 10.65 13.17 13.177.50 8.19 0.91 0.78 0.68 18.84 12.29 9.81 12.27 12.29



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 21.75 5.18 4.44 3.88 3.45 3.11 2.82 2.59 2.39 2.22 106.71 32.63 32.63 32.63 32.634.00 19.03 3.97 3.40 2.97 2.64 2.38 2.16 1.98 1.83 1.70 81.70 28.55 27.93 28.55 28.554.50 16.92 3.13 2.69 2.35 2.09 1.88 1.71 1.57 1.45 1.34 64.55 25.38 23.63 25.38 25.385.00 15.23 2.54 2.18 1.90 1.69 1.52 1.38 1.27 1.17 1.09 52.29 22.84 20.48 22.84 22.845.50 13.84 2.10 1.80 1.57 1.40 1.26 1.14 1.05 0.97 0.90 43.21 20.76 18.07 20.76 20.766.00 12.69 1.76 1.51 1.32 1.17 1.06 0.96 0.88 0.81 0.76 36.31 19.03 16.17 19.03 19.036.50 11.71 1.50 1.29 1.13 1.00 0.90 0.82 0.75 0.69 30.94 17.57 14.65 17.57 17.577.00 10.88 1.29 1.11 0.97 0.86 0.78 0.71 26.68 16.31 13.39 16.31 16.317.50 10.15 1.13 0.97 0.85 0.75 0.68 23.24 15.23 12.33 15.23 15.23

14



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 22.90 4.77 4.09 3.58 3.18 2.86 2.60 2.39 2.20 2.04 119.11 34.35 33.22 34.35 34.354.50 20.35 3.77 3.23 2.83 2.51 2.26 2.06 1.88 1.74 1.62 94.11 30.53 28.11 30.53 30.535.00 18.32 3.05 2.62 2.29 2.04 1.83 1.67 1.53 1.41 1.31 76.23 27.48 24.35 27.48 27.485.50 16.65 2.52 2.16 1.89 1.68 1.51 1.38 1.26 1.16 1.08 63.00 24.98 21.49 24.98 24.986.00 15.27 2.12 1.82 1.59 1.41 1.27 1.16 1.06 0.98 0.91 52.94 22.90 19.24 22.90 22.906.50 14.09 1.81 1.55 1.35 1.20 1.08 0.99 0.90 0.83 0.77 45.11 21.14 17.43 21.14 21.147.00 13.09 1.56 1.34 1.17 1.04 0.93 0.85 0.78 0.72 38.89 19.63 15.93 19.63 19.637.50 12.21 1.36 1.16 1.02 0.90 0.81 0.74 0.68 33.88 18.32 14.68 18.26 18.328.00 11.45 1.19 1.02 0.89 0.80 0.72 29.78 17.17 13.61 16.61 17.17



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 18.43 3.84 3.29 2.88 2.56 2.30 2.09 1.92 1.77 1.65 96.42 27.65 26.55 27.65 27.654.50 16.39 3.03 2.60 2.28 2.02 1.82 1.66 1.52 1.40 1.30 76.19 24.58 22.44 24.58 24.585.00 14.75 2.46 2.11 1.84 1.64 1.47 1.34 1.23 1.13 1.05 61.71 22.12 19.43 22.12 22.125.50 13.41 2.03 1.74 1.52 1.35 1.22 1.11 1.02 0.94 0.87 51.00 20.11 17.13 20.11 20.116.00 12.29 1.71 1.46 1.28 1.14 1.02 0.93 0.85 0.79 0.73 42.86 18.43 15.33 18.43 18.436.50 11.34 1.45 1.25 1.09 0.97 0.87 0.79 0.73 0.67 36.52 17.02 13.88 17.02 17.027.00 10.53 1.25 1.07 0.94 0.84 0.75 0.68 31.49 15.80 12.69 15.80 15.807.50 9.83 1.09 0.94 0.82 0.73 27.43 14.75 11.69 14.61 14.758.00 9.22 0.96 0.82 0.72 24.11 13.83 10.83 13.27 13.83



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 16.35 2.73 2.34 2.04 1.82 1.64 1.49 1.36 1.26 1.17 77.10 24.53 21.45 24.53 24.535.50 14.87 2.25 1.93 1.69 1.50 1.35 1.23 1.13 1.04 0.97 63.72 22.30 18.92 22.30 22.306.00 13.63 1.89 1.62 1.42 1.26 1.14 1.03 0.95 0.87 0.81 53.54 20.44 16.93 20.44 20.446.50 12.58 1.61 1.38 1.21 1.08 0.97 0.88 0.81 0.74 0.69 45.62 18.87 15.33 18.87 18.877.00 11.68 1.39 1.19 1.04 0.93 0.83 0.76 0.70 39.34 17.52 14.01 17.52 17.527.50 10.90 1.21 1.04 0.91 0.81 0.73 34.27 16.35 12.91 16.13 16.358.00 10.22 1.06 0.91 0.80 0.71 30.12 15.33 11.97 14.66 15.338.50 9.62 0.94 0.81 0.71 26.68 14.43 11.16 13.43 14.439.00 9.08 0.84 0.72 23.80 13.63 10.46 12.39 13.63



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 20.37 3.40 2.91 2.55 2.26 2.04 1.85 1.70 1.57 1.46 95.31 30.56 26.92 30.56 30.565.50 18.52 2.81 2.41 2.10 1.87 1.68 1.53 1.40 1.30 1.20 78.77 27.78 23.76 27.78 27.786.00 16.98 2.36 2.02 1.77 1.57 1.41 1.29 1.18 1.09 1.01 66.19 25.46 21.28 25.46 25.466.50 15.67 2.01 1.72 1.51 1.34 1.21 1.10 1.00 0.93 0.86 56.40 23.50 19.27 23.50 23.507.00 14.55 1.73 1.48 1.30 1.15 1.04 0.94 0.87 0.80 0.74 48.63 21.83 17.62 21.83 21.837.50 13.58 1.51 1.29 1.13 1.01 0.91 0.82 0.75 0.70 42.36 20.37 16.23 20.19 20.378.00 12.73 1.33 1.14 0.99 0.88 0.80 0.72 37.23 19.10 15.05 18.36 19.108.50 11.98 1.17 1.01 0.88 0.78 0.70 32.98 17.97 14.04 16.83 17.979.00 11.32 1.05 0.90 0.79 0.70 29.42 16.98 13.16 15.53 16.98



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 26.61 4.43 3.80 3.33 2.96 2.66 2.42 2.22 2.05 1.90 117.20 39.91 35.22 39.91 39.915.50 24.19 3.66 3.14 2.75 2.44 2.20 2.00 1.83 1.69 1.57 96.86 36.28 31.14 36.28 36.286.00 22.17 3.08 2.64 2.31 2.05 1.85 1.68 1.54 1.42 1.32 81.39 33.26 27.92 33.26 33.266.50 20.47 2.62 2.25 1.97 1.75 1.57 1.43 1.31 1.21 1.12 69.35 30.70 25.32 30.70 30.707.00 19.00 2.26 1.94 1.70 1.51 1.36 1.23 1.13 1.04 0.97 59.80 28.51 23.16 28.51 28.517.50 17.74 1.97 1.69 1.48 1.31 1.18 1.07 0.99 0.91 0.84 52.09 26.61 21.36 26.22 26.618.00 16.63 1.73 1.48 1.30 1.15 1.04 0.94 0.87 0.80 0.74 45.78 24.94 19.81 23.89 24.948.50 15.65 1.53 1.32 1.15 1.02 0.92 0.84 0.77 0.71 40.56 23.48 18.48 21.94 23.489.00 14.78 1.37 1.17 1.03 0.91 0.82 0.75 0.68 36.17 22.17 17.32 20.28 22.17

15



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 21.42 4.46 3.82 3.35 2.97 2.68 2.43 2.23 2.06 1.91 133.73 32.13 27.30 32.13 32.134.50 19.04 3.53 3.02 2.64 2.35 2.12 1.92 1.76 1.63 1.51 105.66 28.56 22.93 28.56 28.565.00 17.14 2.86 2.45 2.14 1.90 1.71 1.56 1.43 1.32 1.22 85.59 25.70 19.75 25.70 25.705.50 15.58 2.36 2.02 1.77 1.57 1.42 1.29 1.18 1.09 1.01 70.73 23.37 17.35 23.37 23.376.00 14.28 1.98 1.70 1.49 1.32 1.19 1.08 0.99 0.92 0.85 59.43 21.42 15.47 21.42 21.426.50 13.18 1.69 1.45 1.27 1.13 1.01 0.92 0.84 0.78 0.72 50.64 19.77 13.97 18.97 19.777.00 12.24 1.46 1.25 1.09 0.97 0.87 0.79 0.73 0.67 43.67 18.36 12.74 16.81 18.367.50 11.42 1.27 1.09 0.95 0.85 0.76 0.69 38.04 17.14 11.71 15.08 17.148.00 10.71 1.12 0.96 0.84 0.74 33.43 16.06 10.84 13.65 16.06



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 21.39 3.56 3.06 2.67 2.38 2.14 1.94 1.78 1.65 1.53 105.84 32.08 24.83 32.08 32.085.50 19.44 2.95 2.53 2.21 1.96 1.77 1.61 1.47 1.36 1.26 87.47 29.16 21.83 29.16 29.166.00 17.82 2.48 2.12 1.86 1.65 1.49 1.35 1.24 1.14 1.06 73.50 26.73 19.48 26.73 26.736.50 16.45 2.11 1.81 1.58 1.41 1.27 1.15 1.05 0.97 0.90 62.63 24.68 17.59 23.72 24.687.00 15.28 1.82 1.56 1.36 1.21 1.09 0.99 0.91 0.84 0.78 54.00 22.92 16.05 21.05 22.927.50 14.26 1.58 1.36 1.19 1.06 0.95 0.86 0.79 0.73 0.68 47.04 21.39 14.76 18.89 21.398.00 13.37 1.39 1.19 1.04 0.93 0.84 0.76 0.70 41.34 20.05 13.67 17.12 20.058.50 12.58 1.23 1.06 0.93 0.82 0.74 0.67 36.62 18.87 12.73 15.64 18.879.00 11.88 1.10 0.94 0.83 0.73 32.67 17.82 11.91 14.40 17.82



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.50 25.46 3.86 3.31 2.89 2.57 2.31 2.10 1.93 1.78 1.65 107.61 38.19 28.66 38.19 38.196.00 23.34 3.24 2.78 2.43 2.16 1.95 1.77 1.62 1.50 1.39 90.42 35.01 25.62 34.97 35.016.50 21.55 2.76 2.37 2.07 1.84 1.66 1.51 1.38 1.27 1.18 77.05 32.32 23.17 30.70 32.327.00 20.01 2.38 2.04 1.79 1.59 1.43 1.30 1.19 1.10 1.02 66.43 30.01 21.16 27.31 30.017.50 18.67 2.07 1.78 1.56 1.38 1.24 1.13 1.04 0.96 0.89 57.87 28.01 19.47 24.56 28.018.00 17.51 1.82 1.56 1.37 1.22 1.09 0.99 0.91 0.84 0.78 50.86 26.26 18.04 22.30 26.268.50 16.48 1.62 1.38 1.21 1.08 0.97 0.88 0.81 0.75 0.69 45.05 24.71 16.81 20.41 24.719.00 15.56 1.44 1.23 1.08 0.96 0.86 0.79 0.72 0.66 0.62 40.19 23.34 15.73 18.81 23.319.50 14.74 1.29 1.11 0.97 0.86 0.78 0.71 0.65 0.60 0.55 36.07 22.11 14.79 17.45 21.34



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.00 20.32 2.82 2.42 2.12 1.88 1.69 1.54 1.41 1.30 1.21 98.32 30.47 17.26 25.87 30.476.50 18.75 2.40 2.06 1.80 1.60 1.44 1.31 1.20 1.11 1.03 83.78 28.13 15.50 22.43 28.137.00 17.41 2.07 1.78 1.55 1.38 1.24 1.13 1.04 0.96 0.89 72.24 26.12 14.07 19.72 26.127.50 16.25 1.81 1.55 1.35 1.20 1.08 0.99 0.90 0.83 0.77 62.93 24.38 12.88 17.55 24.198.00 15.24 1.59 1.36 1.19 1.06 0.95 0.87 0.79 0.73 0.68 55.31 22.86 11.88 15.78 21.428.50 14.34 1.41 1.21 1.05 0.94 0.84 0.77 0.70 48.99 21.51 11.03 14.32 19.149.00 13.54 1.25 1.07 0.94 0.84 0.75 0.68 43.70 20.32 10.30 13.10 17.259.50 12.83 1.13 0.96 0.84 0.75 0.68 39.22 19.25 9.66 12.06 15.65

10.00 12.19 1.02 0.87 0.76 0.68 35.40 18.28 9.09 11.18 14.30



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.50 24.79 3.18 2.72 2.38 2.12 1.91 1.73 1.59 1.47 1.36 103.19 37.18 20.54 29.06 37.187.00 23.02 2.74 2.35 2.06 1.83 1.64 1.49 1.37 1.26 1.17 88.97 34.53 18.67 25.62 34.537.50 21.48 2.39 2.05 1.79 1.59 1.43 1.30 1.19 1.10 1.02 77.50 32.22 17.12 22.86 31.078.00 20.14 2.10 1.80 1.57 1.40 1.26 1.14 1.05 0.97 0.90 68.12 30.21 15.81 20.61 27.578.50 18.96 1.86 1.59 1.39 1.24 1.12 1.01 0.93 0.86 0.80 60.34 28.43 14.69 18.75 24.689.00 17.90 1.66 1.42 1.24 1.11 0.99 0.90 0.83 0.77 0.71 53.82 26.85 13.72 17.18 22.289.50 16.96 1.49 1.28 1.12 0.99 0.89 0.81 0.74 0.69 48.31 25.44 12.87 15.85 20.26

10.00 16.11 1.34 1.15 1.01 0.90 0.81 0.73 0.67 43.60 24.17 12.13 14.71 18.5510.50 15.35 1.22 1.04 0.91 0.81 0.73 39.54 23.02 11.46 13.72 17.08

16



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 28.35 3.38 2.89 2.53 2.25 2.03 1.84 1.69 1.56 1.45 105.04 42.53 23.25 31.44 42.537.50 26.46 2.94 2.52 2.21 1.96 1.76 1.60 1.47 1.36 1.26 91.50 39.70 21.33 28.11 37.768.00 24.81 2.58 2.22 1.94 1.72 1.55 1.41 1.29 1.19 1.11 80.42 37.21 19.71 25.39 33.568.50 23.35 2.29 1.96 1.72 1.53 1.37 1.25 1.14 1.06 0.98 71.24 35.03 18.32 23.13 30.109.00 22.05 2.04 1.75 1.53 1.36 1.23 1.11 1.02 0.94 0.88 63.54 33.08 17.11 21.23 27.229.50 20.89 1.83 1.57 1.37 1.22 1.10 1.00 0.92 0.85 0.79 57.03 31.34 16.06 19.61 24.79

10.00 19.85 1.65 1.42 1.24 1.10 0.99 0.90 0.83 0.76 0.71 51.47 29.77 15.13 18.22 22.7310.50 18.90 1.50 1.29 1.13 1.00 0.90 0.82 0.75 0.69 46.68 28.35 14.30 17.01 20.9611.00 18.04 1.37 1.17 1.03 0.91 0.82 0.75 0.68 42.54 27.07 13.56 15.95 19.43



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 19.80 2.36 2.02 1.77 1.57 1.41 1.29 1.18 1.09 1.01 97.78 29.70 15.89 22.28 29.707.50 18.48 2.05 1.76 1.54 1.37 1.23 1.12 1.03 0.95 0.88 85.18 27.72 14.55 19.83 27.358.00 17.32 1.80 1.55 1.35 1.20 1.08 0.98 0.90 0.83 0.77 74.86 25.99 13.42 17.83 24.228.50 16.30 1.60 1.37 1.20 1.07 0.96 0.87 0.80 0.74 0.69 66.31 24.46 12.46 16.18 21.649.00 15.40 1.43 1.22 1.07 0.95 0.86 0.78 0.71 59.15 23.10 11.64 14.80 19.509.50 14.59 1.28 1.10 0.96 0.85 0.77 0.70 53.09 21.88 10.91 13.63 17.69

10.00 13.86 1.15 0.99 0.87 0.77 0.69 47.91 20.79 10.28 12.63 16.1610.50 13.20 1.05 0.90 0.79 0.70 43.46 19.80 9.71 11.76 14.8511.00 12.60 0.95 0.82 0.72 39.60 18.90 9.21 11.00 13.73



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.50 24.74 2.75 2.36 2.06 1.83 1.65 1.50 1.37 1.27 1.18 105.04 37.11 19.51 26.01 35.348.00 23.20 2.42 2.07 1.81 1.61 1.45 1.32 1.21 1.12 1.04 92.32 34.79 18.02 23.45 31.358.50 21.83 2.14 1.83 1.61 1.43 1.28 1.17 1.07 0.99 0.92 81.78 32.75 16.75 21.33 28.079.00 20.62 1.91 1.64 1.43 1.27 1.15 1.04 0.95 0.88 0.82 72.94 30.93 15.65 19.55 25.349.50 19.53 1.71 1.47 1.29 1.14 1.03 0.93 0.86 0.79 0.73 65.47 29.30 14.69 18.04 23.05

10.00 18.56 1.55 1.33 1.16 1.03 0.93 0.84 0.77 0.71 59.08 27.84 13.84 16.74 21.1010.50 17.67 1.40 1.20 1.05 0.94 0.84 0.77 0.70 53.59 26.51 13.08 15.62 19.4311.00 16.87 1.28 1.10 0.96 0.85 0.77 0.70 48.83 25.31 12.41 14.64 17.9911.50 16.14 1.17 1.00 0.88 0.78 0.70 44.68 24.20 11.80 13.77 16.73



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

8.00 28.83 3.00 2.57 2.25 2.00 1.80 1.64 1.50 1.39 1.29 109.12 43.25 22.59 29.00 38.308.50 27.14 2.66 2.28 2.00 1.77 1.60 1.45 1.33 1.23 1.14 96.66 40.71 21.01 26.43 34.369.00 25.63 2.37 2.03 1.78 1.58 1.42 1.29 1.19 1.10 1.02 86.21 38.44 19.63 24.26 31.079.50 24.28 2.13 1.83 1.60 1.42 1.28 1.16 1.06 0.98 0.91 77.38 36.42 18.43 22.42 28.30

10.00 23.07 1.92 1.65 1.44 1.28 1.15 1.05 0.96 0.89 0.82 69.83 34.60 17.37 20.83 25.9510.50 21.97 1.74 1.49 1.31 1.16 1.05 0.95 0.87 0.80 0.75 63.34 32.95 16.42 19.46 23.9311.00 20.97 1.59 1.36 1.19 1.06 0.95 0.87 0.79 0.73 0.68 57.71 31.45 15.57 18.25 22.1911.50 20.06 1.45 1.25 1.09 0.97 0.87 0.79 0.73 0.67 52.80 30.09 14.81 17.19 20.6712.00 19.22 1.33 1.14 1.00 0.89 0.80 0.73 48.50 28.83 14.12 16.24 19.33

17

The sleeved purlin system combines the benefits of single span purlins, with the strength anddeflection benefits of continuity over supports.

Sleeved Purlins

The purlins are detailed as single span purlins, with extra holes for the connection of a sleeve at thejoints. Sleeves increase the strength of the system over the support, by connecting to the cleat andthe purlin web.

Sleeved purlins have more components than either single span or double span systems, but thereare benefits in the amount of steel used. Deflections are reduced, and fixing is simplified due toshorter components. However, as there is a sleeve at every joint, there are more components to fix.

Penultimate RafterGable Rafter Inner Rafter

Joint & Sleeve

Verge Overhang

Joint & Sleeve

Joint & Sleeve Joint & Sleeve



Sleeved Purlin Arrangement

Gable Overhang


SleeveSleeve

End Bay Inner Bay

18

4mm gap

4mm gap

4mm gap

4mm gap

4mm gap

4mm gap

4mm gap

4mm gap

Verge overhang

Gable rafter

Penultimate rafter

Inner rafter

4 bolt connector

sleeved joint

4mm gap

4mm gap

End Bay Purlin

Inner Bay Purlin

End Bay

GableOverhang

50 50

Overhangless 50mm 48 2

48 2482

Rafter centre line

Rafter centre line

Inner Bay

Sleeve Holes

452

402

Sleeve Holes Sleeve Holes

452

402

452

402

Sleeved Purlin Arrangement

The purlin sleeves are standard for each section.It is important that the purlins are detailed withthe holes for the sleeve connection included.

Loadings must be carefully checked, as detailedfor single span purlins. It is the designer’sresponsibility to check that all relevant loadingshave been taken into account, and the correctpurlin size and arrangement has been specified.

19

Sleeved purlins provide the specifier with the opportunity to enhance the load carrying capacity ofsingle span purlins, by the incorporation of a sleeve at each joint.

Specifiers must ensure that all loads are taken into account, and that deflection limits areconsidered. Please refer to the notes at the start of this section.

Sleeved Purlin Load Tables



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 19.21 5.34 4.57 4.00 3.56 3.20 2.91 2.67 2.46 2.29 19.21 30.73 25.10 30.73 30.733.50 14.12 3.36 2.88 2.52 2.24 2.02 1.83 1.68 1.55 1.44 14.12 26.34 19.67 26.34 26.344.00 10.81 2.25 1.93 1.69 1.50 1.35 1.23 1.13 1.04 0.96 10.81 23.05 16.11 23.05 23.054.50 8.54 1.58 1.36 1.19 1.05 0.95 0.86 0.79 0.73 0.68 8.54 20.49 13.62 20.37 20.495.00 6.92 1.15 0.99 0.86 0.77 0.69 6.92 18.44 11.79 17.00 18.445.50 5.72 0.87 0.74 5.72 16.76 10.40 14.48 16.766.00 4.80 4.80 15.37 9.31 12.55 15.376.50 4.09 4.09 14.18 8.42 11.04 14.187.00 3.53 3.53 13.17 7.70 9.84 12.75



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 23.66 6.57 5.63 4.93 4.38 3.94 3.58 3.29 3.03 2.82 23.66 38.02 31.38 38.02 38.023.50 17.38 4.14 3.55 3.10 2.76 2.48 2.26 2.07 1.91 1.77 17.38 32.58 24.66 32.58 32.584.00 13.31 2.77 2.38 2.08 1.85 1.66 1.51 1.39 1.28 1.19 13.31 28.51 20.23 28.51 28.514.50 10.52 1.95 1.67 1.46 1.30 1.17 1.06 0.97 0.90 0.83 10.52 25.34 17.13 25.34 25.345.00 8.52 1.42 1.22 1.06 0.95 0.85 0.77 0.71 8.52 22.81 14.84 21.19 22.815.50 7.04 1.07 0.91 0.80 0.71 7.04 20.74 13.10 18.08 20.746.00 5.91 0.82 0.70 5.91 19.01 11.73 15.69 19.016.50 5.04 5.04 17.55 10.62 13.82 17.557.00 4.35 4.35 16.29 9.70 12.33 15.88



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 21.95 5.23 4.48 3.92 3.48 3.14 2.85 2.61 2.41 2.24 21.97 32.92 24.34 32.92 32.924.00 16.82 3.50 3.00 2.63 2.34 2.10 1.91 1.75 1.62 1.50 16.82 28.81 19.92 28.81 28.814.50 13.29 2.46 2.11 1.85 1.64 1.48 1.34 1.23 1.14 1.05 13.29 25.61 16.83 25.27 25.615.00 10.76 1.79 1.54 1.35 1.20 1.08 0.98 0.90 0.83 0.77 10.76 23.05 14.57 21.07 23.055.50 8.90 1.35 1.16 1.01 0.90 0.81 0.74 0.67 8.90 20.95 12.85 17.94 20.956.00 7.48 1.04 0.89 0.78 0.69 7.48 19.21 11.50 15.54 19.216.50 6.37 0.82 0.70 6.37 17.73 10.41 13.66 17.737.00 5.49 5.49 16.46 9.51 12.17 15.827.50 4.78 4.78 15.36 8.76 10.96 14.05



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 27.10 6.45 5.53 4.84 4.30 3.87 3.52 3.23 2.98 2.77 27.10 40.78 30.42 40.78 40.784.00 20.75 4.32 3.71 3.24 2.88 2.59 2.36 2.16 2.00 1.85 20.75 35.69 24.94 35.69 35.694.50 16.39 3.04 2.60 2.28 2.02 1.82 1.66 1.52 1.40 1.30 16.39 31.72 21.10 31.39 31.725.00 13.28 2.21 1.90 1.66 1.48 1.33 1.21 1.11 1.02 0.95 13.28 28.55 18.28 26.22 28.555.50 10.97 1.66 1.43 1.25 1.11 1.00 0.91 0.83 0.77 0.71 10.97 25.95 16.13 22.35 25.956.00 9.22 1.28 1.10 0.96 0.85 0.77 0.70 9.22 23.79 14.44 19.38 23.796.50 7.86 1.01 0.86 0.76 0.67 7.86 21.96 13.08 17.06 21.967.00 6.77 0.81 0.69 6.77 20.39 11.95 15.21 19.667.50 5.90 5.90 19.03 11.01 13.71 17.48

20



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 28.62 5.96 5.11 4.47 3.98 3.58 3.25 2.98 2.75 2.56 30.25 42.94 29.66 42.94 42.944.50 23.90 4.43 3.79 3.32 2.95 2.66 2.41 2.21 2.04 1.90 23.90 38.16 25.09 37.41 38.165.00 19.36 3.23 2.77 2.42 2.15 1.94 1.76 1.61 1.49 1.38 19.36 34.35 21.75 31.22 34.355.50 16.00 2.42 2.08 1.82 1.62 1.45 1.32 1.21 1.12 1.04 16.00 31.23 19.19 26.60 31.236.00 13.44 1.87 1.60 1.40 1.24 1.12 1.02 0.93 0.86 0.80 13.44 28.62 17.18 23.06 28.626.50 11.46 1.47 1.26 1.10 0.98 0.88 0.80 0.73 0.68 11.46 26.42 15.56 20.30 26.427.00 9.88 1.18 1.01 0.88 0.78 0.71 9.88 24.53 14.22 18.10 23.437.50 8.60 0.96 0.82 0.72 8.60 22.90 13.10 16.31 20.828.00 7.56 0.79 0.68 7.56 21.47 12.15 14.83 18.67



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 23.04 4.80 4.11 3.60 3.20 2.88 2.62 2.40 2.22 2.06 24.49 34.56 23.70 34.56 34.564.50 19.35 3.58 3.07 2.69 2.39 2.15 1.95 1.79 1.65 1.54 19.35 30.72 20.03 30.10 30.725.00 15.67 2.61 2.24 1.96 1.74 1.57 1.42 1.31 1.21 1.12 15.67 27.65 17.34 25.09 27.655.50 12.95 1.96 1.68 1.47 1.31 1.18 1.07 0.98 0.91 0.84 12.95 25.14 15.30 21.35 25.146.00 10.88 1.51 1.30 1.13 1.01 0.91 0.82 0.76 0.70 10.88 23.04 13.69 18.49 23.046.50 9.27 1.19 1.02 0.89 0.79 0.71 9.27 21.27 12.39 16.26 21.277.00 8.00 0.95 0.82 0.71 8.00 19.75 11.33 14.48 18.847.50 6.97 0.77 6.97 18.43 10.43 13.04 16.738.00 6.12 6.12 17.28 9.67 11.85 14.99



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 19.58 3.26 2.80 2.45 2.18 1.96 1.78 1.63 1.51 1.40 19.58 30.66 19.16 27.71 30.665.50 16.18 2.45 2.10 1.84 1.63 1.47 1.34 1.23 1.13 1.05 16.18 27.87 16.90 23.58 27.876.00 13.60 1.89 1.62 1.42 1.26 1.13 1.03 0.94 0.87 0.81 13.60 25.55 15.12 20.42 25.556.50 11.59 1.49 1.27 1.11 0.99 0.89 0.81 0.74 0.69 11.59 23.58 13.69 17.96 23.587.00 9.99 1.19 1.02 0.89 0.79 0.71 9.99 21.90 12.51 15.99 20.817.50 8.70 0.97 0.83 0.73 8.70 20.44 11.53 14.40 18.488.00 7.65 0.80 0.68 7.65 19.16 10.69 13.09 16.558.50 6.78 6.78 18.04 9.97 11.99 14.969.00 6.04 6.04 17.03 9.34 11.06 13.61



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 24.21 4.03 3.46 3.03 2.69 2.42 2.20 2.02 1.86 1.73 24.21 38.20 24.04 34.52 38.205.50 20.01 3.03 2.60 2.27 2.02 1.82 1.65 1.52 1.40 1.30 20.01 34.72 21.22 29.40 34.726.00 16.81 2.33 2.00 1.75 1.56 1.40 1.27 1.17 1.08 1.00 16.81 31.83 19.00 25.49 31.836.50 14.32 1.84 1.57 1.38 1.22 1.10 1.00 0.92 0.85 0.79 14.32 29.38 17.21 22.44 29.387.00 12.35 1.47 1.26 1.10 0.98 0.88 0.80 0.74 0.68 12.35 27.28 15.73 20.00 25.907.50 10.76 1.20 1.02 0.90 0.80 0.72 10.76 25.46 14.49 18.02 23.018.00 9.46 0.98 0.84 0.74 9.46 23.87 13.44 16.39 20.648.50 8.38 0.82 0.70 8.38 22.47 12.53 15.03 18.669.00 7.47 0.69 7.47 21.22 11.75 13.87 17.00



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 29.77 4.96 4.25 3.72 3.31 2.98 2.71 2.48 2.29 2.13 29.77 49.88 31.45 44.34 49.885.50 24.60 3.73 3.19 2.80 2.48 2.24 2.03 1.86 1.72 1.60 24.60 45.35 27.81 37.86 45.356.00 20.67 2.87 2.46 2.15 1.91 1.72 1.57 1.44 1.33 1.23 20.67 41.57 24.93 32.91 41.576.50 17.61 2.26 1.94 1.69 1.51 1.35 1.23 1.13 1.04 0.97 17.61 38.37 22.60 29.03 37.717.00 15.19 1.81 1.55 1.36 1.21 1.08 0.99 0.90 0.83 0.77 15.19 35.63 20.68 25.93 33.227.50 13.23 1.47 1.26 1.10 0.98 0.88 0.80 0.73 0.68 13.23 33.26 19.07 23.41 29.568.00 11.63 1.21 1.04 0.91 0.81 0.73 11.63 31.18 17.69 21.33 26.558.50 10.30 1.01 0.87 0.76 0.67 10.30 29.34 16.50 19.59 24.049.00 9.19 0.85 0.73 9.19 27.71 15.47 18.10 21.94

21



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 26.77 5.58 4.78 4.18 3.72 3.35 3.04 2.79 2.57 2.39 33.96 40.16 24.38 39.71 40.164.50 23.80 4.41 3.78 3.31 2.94 2.64 2.40 2.20 2.03 1.89 26.83 35.70 20.47 32.11 35.705.00 21.42 3.57 3.06 2.68 2.38 2.14 1.95 1.78 1.65 1.53 21.74 32.13 17.63 26.59 32.135.50 17.96 2.72 2.33 2.04 1.81 1.63 1.48 1.36 1.26 1.17 17.96 29.21 15.49 22.48 29.216.00 15.09 2.10 1.80 1.57 1.40 1.26 1.14 1.05 0.97 0.90 15.09 26.77 13.81 19.36 26.476.50 12.86 1.65 1.41 1.24 1.10 0.99 0.90 0.82 0.76 0.71 12.86 24.71 12.47 16.93 22.927.00 11.09 1.32 1.13 0.99 0.88 0.79 0.72 11.09 22.95 11.37 15.01 20.057.50 9.66 1.07 0.92 0.81 0.72 9.66 21.42 10.45 13.46 17.728.00 8.49 0.88 0.76 8.49 20.08 9.68 12.19 15.81



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 26.73 4.46 3.82 3.34 2.97 2.67 2.43 2.23 2.06 1.91 26.88 40.10 22.17 33.15 40.105.50 22.22 3.37 2.89 2.52 2.24 2.02 1.84 1.68 1.55 1.44 22.22 36.46 19.49 28.06 36.466.00 18.67 2.59 2.22 1.94 1.73 1.56 1.41 1.30 1.20 1.11 18.67 33.42 17.39 24.19 32.936.50 15.91 2.04 1.75 1.53 1.36 1.22 1.11 1.02 0.94 0.87 15.91 30.85 15.71 21.18 28.537.00 13.71 1.63 1.40 1.22 1.09 0.98 0.89 0.82 0.75 0.70 13.71 28.64 14.33 18.80 24.987.50 11.95 1.33 1.14 1.00 0.88 0.80 0.72 11.95 26.73 13.18 16.87 22.108.00 10.50 1.09 0.94 0.82 0.73 10.50 25.06 12.20 15.29 19.738.50 9.30 0.91 0.78 0.68 9.30 23.59 11.36 13.97 17.779.00 8.30 0.77 8.30 22.28 10.64 12.86 16.13



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.50 27.33 4.14 3.55 3.11 2.76 2.48 2.26 2.07 1.91 1.77 27.33 47.74 25.59 36.12 47.746.00 22.96 3.19 2.73 2.39 2.13 1.91 1.74 1.59 1.47 1.37 22.96 43.76 22.87 31.22 42.136.50 19.57 2.51 2.15 1.88 1.67 1.51 1.37 1.25 1.16 1.08 19.57 40.40 20.69 27.41 36.527.00 16.87 2.01 1.72 1.51 1.34 1.21 1.10 1.00 0.93 0.86 16.87 37.51 18.89 24.38 32.027.50 14.70 1.63 1.40 1.22 1.09 0.98 0.89 0.82 0.75 0.70 14.70 35.01 17.38 21.93 28.378.00 12.92 1.35 1.15 1.01 0.90 0.81 0.73 0.67 12.92 32.82 16.11 19.91 25.388.50 11.44 1.12 0.96 0.84 0.75 0.67 11.44 30.89 15.01 18.22 22.899.00 10.21 0.95 0.81 0.71 10.21 29.18 14.05 16.80 20.819.50 9.16 0.80 0.69 9.16 27.64 13.21 15.58 19.05



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.00 24.97 3.47 2.97 2.60 2.31 2.08 1.89 1.73 1.60 1.49 24.97 38.09 15.41 23.10 33.046.50 21.28 2.73 2.34 2.05 1.82 1.64 1.49 1.36 1.26 1.17 21.28 35.16 13.84 20.02 28.367.00 18.35 2.18 1.87 1.64 1.46 1.31 1.19 1.09 1.01 0.94 18.35 32.65 12.56 17.61 24.627.50 15.98 1.78 1.52 1.33 1.18 1.07 0.97 0.89 0.82 0.76 15.98 30.47 11.50 15.67 21.598.00 14.05 1.46 1.25 1.10 0.98 0.88 0.80 0.73 0.68 14.05 28.57 10.61 14.09 19.138.50 12.44 1.22 1.05 0.91 0.81 0.73 12.44 26.89 9.85 12.79 17.099.00 11.10 1.03 0.88 0.77 0.69 11.10 25.40 9.20 11.70 15.409.50 9.96 0.87 0.75 9.96 24.06 8.62 10.77 13.98

10.00 8.99 0.75 8.99 22.86 8.12 9.98 12.77



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.50 26.21 3.36 2.88 2.52 2.24 2.02 1.83 1.68 1.55 1.44 26.21 46.48 18.34 25.95 36.337.00 22.60 2.69 2.31 2.02 1.79 1.61 1.47 1.35 1.24 1.15 22.60 43.16 16.67 22.88 31.577.50 19.68 2.19 1.87 1.64 1.46 1.31 1.19 1.09 1.01 0.94 19.68 40.28 15.29 20.41 27.748.00 17.30 1.80 1.54 1.35 1.20 1.08 0.98 0.90 0.83 0.77 17.30 37.76 14.12 18.40 24.618.50 15.32 1.50 1.29 1.13 1.00 0.90 0.82 0.75 0.69 15.32 35.54 13.12 16.74 22.049.00 13.67 1.27 1.08 0.95 0.84 0.76 0.69 13.67 33.57 12.25 15.34 19.909.50 12.27 1.08 0.92 0.81 0.72 12.27 31.80 11.49 14.15 18.09

10.00 11.07 0.92 0.79 0.69 11.07 30.21 10.83 13.14 16.5610.50 10.04 0.80 0.68 10.04 28.77 10.24 12.25 15.25

22



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 26.68 3.18 2.72 2.38 2.12 1.91 1.73 1.59 1.47 1.36 26.68 53.16 20.76 28.07 38.317.50 23.24 2.58 2.21 1.94 1.72 1.55 1.41 1.29 1.19 1.11 23.24 49.62 19.05 25.10 33.718.00 20.42 2.13 1.82 1.60 1.42 1.28 1.16 1.06 0.98 0.91 20.42 46.52 17.60 22.67 29.968.50 18.09 1.77 1.52 1.33 1.18 1.06 0.97 0.89 0.82 0.76 18.09 43.78 16.35 20.65 26.879.00 16.14 1.49 1.28 1.12 1.00 0.90 0.82 0.75 0.69 16.14 41.35 15.28 18.96 24.309.50 14.48 1.27 1.09 0.95 0.85 0.76 0.69 14.48 39.17 14.34 17.51 22.13

10.00 13.07 1.09 0.93 0.82 0.73 13.07 37.21 13.50 16.27 20.2910.50 11.86 0.94 0.81 0.71 11.86 35.44 12.77 15.19 18.7111.00 10.80 0.82 0.70 10.80 33.83 12.10 14.25 17.35



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 24.75 2.95 2.53 2.21 1.96 1.77 1.61 1.47 1.36 1.26 24.83 37.12 14.19 19.89 27.857.50 21.63 2.40 2.06 1.80 1.60 1.44 1.31 1.20 1.11 1.03 21.63 34.65 12.99 17.70 24.428.00 19.01 1.98 1.70 1.49 1.32 1.19 1.08 0.99 0.91 0.85 19.01 32.48 11.99 15.92 21.638.50 16.84 1.65 1.42 1.24 1.10 0.99 0.90 0.83 0.76 0.71 16.84 30.57 11.13 14.45 19.329.00 15.02 1.39 1.19 1.04 0.93 0.83 0.76 0.70 15.02 28.87 10.39 13.21 17.419.50 13.48 1.18 1.01 0.89 0.79 0.71 13.48 27.35 9.74 12.17 15.80

10.00 12.17 1.01 0.87 0.76 0.68 12.17 25.99 9.18 11.27 14.4310.50 11.04 0.88 0.75 11.04 24.75 8.67 10.50 13.2611.00 10.06 0.76 10.06 23.62 8.22 9.82 12.26



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.50 26.68 2.96 2.54 2.22 1.98 1.78 1.62 1.48 1.37 1.27 26.68 46.39 17.42 23.22 31.558.00 23.45 2.44 2.09 1.83 1.63 1.47 1.33 1.22 1.13 1.05 23.45 43.49 16.09 20.94 28.008.50 20.77 2.04 1.75 1.53 1.36 1.22 1.11 1.02 0.94 0.87 20.77 40.93 14.96 19.05 25.079.00 18.52 1.72 1.47 1.29 1.14 1.03 0.94 0.86 0.79 0.74 18.52 38.66 13.97 17.46 22.639.50 16.63 1.46 1.25 1.09 0.97 0.88 0.80 0.73 0.67 16.63 36.63 13.11 16.11 20.58

10.00 15.01 1.25 1.07 0.94 0.83 0.75 0.68 15.01 34.79 12.36 14.95 18.8410.50 13.61 1.08 0.93 0.81 0.72 13.61 33.14 11.68 13.95 17.3511.00 12.40 0.94 0.81 0.70 12.40 31.63 11.08 13.07 16.0611.50 11.35 0.82 0.70 11.35 30.26 10.54 12.30 14.94



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

8.00 27.71 2.89 2.47 2.16 1.92 1.73 1.57 1.44 1.33 1.24 27.71 54.06 20.17 25.89 34.208.50 24.55 2.41 2.06 1.80 1.60 1.44 1.31 1.20 1.11 1.03 24.55 50.88 18.75 23.59 30.679.00 21.90 2.03 1.74 1.52 1.35 1.22 1.11 1.01 0.94 0.87 21.90 48.06 17.53 21.66 27.749.50 19.65 1.72 1.48 1.29 1.15 1.03 0.94 0.86 0.80 0.74 19.65 45.53 16.45 20.02 25.27

10.00 17.74 1.48 1.27 1.11 0.99 0.89 0.81 0.74 0.68 17.74 43.25 15.50 18.60 23.1710.50 16.09 1.28 1.09 0.96 0.85 0.77 0.70 16.09 41.19 14.66 17.37 21.3711.00 14.66 1.11 0.95 0.83 0.74 14.66 39.32 13.91 16.29 19.8111.50 13.41 0.97 0.83 0.73 13.41 37.61 13.22 15.34 18.4512.00 12.32 0.86 0.73 12.32 36.04 12.61 14.50 17.26

23

Apex ties should be used to ensure that the purlins are tied together at the apex, and then the sagrods are fixed as shown, to prevent the purlins from sagging down the slope, prior to the pic-xingof the roof cladding, and to provide lateral support to the lower flange, under uplift conditions.

Details

Eaves struts tie the sag rod system to the eaves beam, and to provide lateral support for the Eaves Beam.

Eaves Strut Arrangement

Sag Rod and Apex Tie Arrangement

Sag Rod

Apex TiePurlin

Sag RodPurlin

Eaves Beam

Eaves Strut

24

Where the purlins extend beyond the verge, the ends are tiedtogether with a light gauge Cleader Angle. The cleader isfixed to the to flange of the purlin, using self drilling screws.

Cladco's Snap-lok sag rods are fixed into position by a springclip securing it place. This secures the system, tying thepurlins together, preventing roll prior to the fixing of the roofcladding, and restraining the bottom flange under upliftconditions.

Rafter stays may be required by the structural frame design,to restrain the bottom flange of the rafter. Their requirementwill be specified in the design brief. They are normally neededat the end of the frame haunch and at the apex, of a portalframed building.

Apex ties connect the top 2 purlins, tying the whole systemtogether, providing stability to the purlins.

Cantilever Overhang Snap-lok Tie

Rafter Stays Apex Tie

Cleader Rail

25

Lightweight Sigma Cladding Rails

Single Span Cladding Rails

Single Span cladding rails are the simplestsystem available, although there are morecomponents than with a Double Span system.

Single Span cladding rails are simple to detail,and to fix, with connections at each stanchionline. However, Single Span cladding rails utilisemore metal that other systems, as the rails aresimples beams, spanning between supports.The benefits are that the rails are supplied inshorter lengths than for double-span, makingtransportation, handling and erection, simple.

Double Span Cladding Rails

Double span cladding rails offer more economythat single span rails, as less meat is employed,due to the rails being semi-continuous over asupport. However, section lengths are greater,impacting on transportation, handling and erection.

Double span cladding rails, by virtue of theirdesign, have less components than any othersystem. When detailing double span claddingrails, it is advisable to stagger joints, to avoidoverloading on the centre support. This willentail using a single span rail at the start of eachalternate line of rails - see details.

Cladco cladding rails offer the specifier a choice of systems and sections, suitable for mostbuildings. The cladding rails are a ‘Sigma’ section, with a range of accessories to complimentthe sections offered. Welded or bolted support cleats, sag wires and ‘tom’ bars, completing thecladding rail system.

26

Sleeved Cladding Rails

Where additional load capacity is needed, but the benefits of single spancladding rails are required, sleeved rails offer an alternative. Sleeves are placedat each support position, effectively creating a degree of continuity at the joints.

Sleeved rails have the largest number of components, due to the need forthe sleeves in addition to single span rails. However, the benefits ofadditional load capacity, whilst still using shorter components, leads tosimpler transportation and handling on site.

Firewalls

All Cladco cladding rails can be incorporated into a fire wall, either on orremote from the relevant boundary. Slotted holes, usable washers and otherfeatures need to be considered.

Please contact Cladco Technical Department for more details.

The sections offered by Cladco, can also be used as Eaves Beams, either with a horizontal top flange, or one splayed to suit the roof slope.

Cladco cladding rails are offered in 3 systems - Single Span, DoubleSpan and Sleeved.

155m Sheeting Line

Angle Section Rail Cleat

185mm Sheeting Line

Angle Section Rail Cleat

215mm Sheeting Line

Stiffened Angle or Tee Section Rail Cleat


235mm Sheeting Line


245mm Sheeting Line


275mm Sheeting Line


310mm Sheeting Line

27

Standard sheeting lines are 10mm morethan the rail depth. If different sheetinglines are required, then Rail Cleats willhave to be modified to suit.

Standard Sheeting Lines

145mm section

175mm section

205mm section

225mm section

235mm section

265mm section

300mmsection

Eaves Beams can be supplied with ahorizontal top flange, or it can be sloped at 5degree increments, up to 20 degree to suit theslope of the roof. The slope of the top flangeof the Eaves Beam, can be sloped upwards,for normal eaves conditions, or downwards,for mono pitch ridges.

When specifying the slope of the Eaves Beamtop flange, the nearest increment should bechosen to the roof slope. For example, for aroof slope of 6 degrees, a top flange angle of5 degrees would be specified.

Eaves Beam brackets can be supplied forbolting to the structure, or for welding. Ifwelded brackets are required, the specifiershould ensure that Cladco are advised at anearly stage, so that they can be supplied suitsteel fabrication.

Cladco Eaves Beams are supplied in a variety of section depths. The standard section is 205mmdeep, but section depths of 175mm and 225 mm can be specified.

Eaves Beams

Eaves Strut Spacing

Eaves Beam Restraint systems are required to tie the Eaves Beam into the cladding system, andto provide lateral support for the Eaves Beam.

The number of struts required, depends upon the bay width, and the table shows how many strutsshould be used for the various bay widths.

28

Bay Width No of Struts Position of Struts

Up to 6.0m 1 Centrally in Bay

6.0m to 9.0m 2 At 1/3 points across the Bay

Over 9.0m* 3 At 1/4 points across the Bay

Eaves Struts

Eaves Beam

Purlin

Purlin

Purlin Sag rods

Purlin Sag rods



Single span cladding rails are deflection sensitive, due to thelack of continuity at supports, so specifiers must ensure thatdeflection loads are considered as well as working loadsapplied to the rails.

Loading applied to cladding rails is generally from wind, socareful consideration should be given to the design of the rails,taking account of current British Standards, including thoseloads in areas of 'high local coefficients', especially at buildingcorners other features.

Cladco cladding rails may be used to create a fire wall, eitheron or remote from a relevant boundary, subject to specificdetails being employed. Our Technical Department can assistwith any queries in this regard.

Connection to the support structure, is by a cleat which iseither bolted or welded to to stanchion. Cleats can besupplied to the steelwork fabricator, for welding to stanchionsprior to delivery to site. Alternatively, the steelwork fabricatormay provide cleats, taking account of the hole positions in thecladding rails being supplied. The contractor must ensure thatwelded cleat orders are placed in time for Cladco to supplythem to the steelwork fabricator at the time they require them.Bolted cleats will be supplied to site with the cladding rails, forfixing to the stanchions prior to erection the cladding rails. Thespecifier must ensure that the holes in the stanchions toaccept the cleats, take account of the details shown for boltedcleats.

Single span cladding rails are the simplest system for vertical cladding supports, but have a lower load-carrying capacitythan other systems, and the steel content is higher. However, as the components are generally shorter than for double spansystems, and have fewer components than sleeved systems, transportation, handling and erection is simpler.

Joint

Joint

Joint

Joint

Single SpanCladding Rail

DiagonalSag Wires

VerticalStruts (Tom Bars)

EavesBeams

EavesStruts

EavesStruts

Eaves BeamBracket

Eaves BeamBracket

Eaves BeamBracket

Eaves BeamBracket

Stanchion

29



Double span cladding rails are less deflectionsensitive than single span systems, due to thecontinuity of the cladding rail at supports.Specifiers should check that deflection loadsare considered as well as working loads appliedto the rails.

Loading applied to cladding rails is generallyfrom wind, so careful consideration should begiven to the design of the rails, taking account ofcurrent British Standards, including those loadsin areas of 'high local coefficients', especially atbuilding corners other features.

Cladco cladding rails may be used to create afire wall, either on or remote from a relevantboundary, subject to specific details beingemployed. Our Technical Department can assistwith any queries in this regard.

Connection to the support structure, is by acleat which is either bolted or welded to tostanchion. Cleats can be supplied to thesteelwork fabricator, for welding to stanchionsprior to delivery to site. Alternatively, thesteelwork fabricator may provide cleats, takingaccount of the hole positions in the claddingrails being supplied. The contractor must ensurethat welded cleat orders are placed in time forCladco to supply them to the steelworkfabricator at the time they require them. Boltedcleats will be supplied to site with the claddingrails, for fixing to the stanchions prior to erectionthe cladding rails. The specifier must ensurethat the holes in the stanchions to accept thecleats, take account of the details shown forbolted cleats.

Double span cladding rails are a simple system, employing less steel than single span systems,for the same load carrying capacity. However, longer lengths will affect transportation, handlingand erection.

Joint

Joint

Joint

DiagonalSag Wires Vertical

Struts(Tom Bars)

Eaves Beams

Stanchion

Joint

30



Sleeved cladding rails not as deflection sensitive as singlespan cladding rails, due to partial continuity at supports, butspecifiers must still check that deflection loads are consideredas well as working loads applied to the rails.

Loading applied to cladding rails is generally from wind, socareful consideration should be given to the design of the rails,taking account of current British Standards, including thoseloads in areas of 'high local coefficients', especially at buildingcorners other features.

Cladco cladding rails may be used to create a fire wall, eitheron or remote from a relevant boundary, subject to specificdetails being employed. Our Technical Department can assistwith any queries in this regard.

Connection to the support structure, is by a cleat which iseither bolted or welded to to stanchion. Cleats can be suppliedto the steelwork fabricator, for welding to stanchions prior todelivery to site. Alternatively, the steelwork fabricator mayprovide cleats, taking account of the hole positions in thecladding rails being supplied. The contractor must ensure thatwelded cleat orders are placed in time for Cladco to supplythem to the steelwork fabricator at the time they require them.Bolted cleats will be supplied to site with the cladding rails, forfixing to the stanchions prior to erection the cladding rails. Thespecifier must ensure that the holes in the stanchions toaccept the cleats, take account of the details shown for boltedcleats.

Sleeved cladding rails have the same benefits as single span rails, in terms of material lengths, but they have morecomponents. However, greater load carrying capacity is provided by the use of sleeves at each support point.

SleevedJoint

SleevedJoint

SleevedJoint

SleevedJoint

DiagonalSag Wires

VerticalStruts (Tom Bars)

Eaves Beams

Stanchion

31

32

Single span cladding rails are the simplest system, but have a lower load-carrying capacity thanother systems.

Handling and erection is simpler, by virtue of the cladding rails being simple beams, spanning fromstanchion to stanchion.

Single Span Cladding Rail Load Tables

The load/span tables for single span, double span and sleeved cladding rails are shown for eachsection size and thickness.

The values shown are working loads, and deflections are limited to span/150.

When comparing loadings to the load/span tables, factored wind loads should be used. Deflections,limited to span/150, are to be compared to unfactored loads.

The set of figures shown under 'Positive Pressure' are the maximum loads that the cladding rail canbe subjected to.

On the right hand side of each table, the number of anti-sag rods is indicated for each spandimension. Sag wires are to be installed, as shown on the details on preceding pages.

Cladding Rail Load Span Table Notes

Section 145x65x1.6

Section 145x65x2.0

Section 175x65x1.6

Span Total Working Loads Ultimate U.D.L. in kN / spanWorking Allowable loading in kN/sq m Deflection Positive Wind suctionU.D.L. Rail centres in millimetres Span/150 Pressure Number of anti sag rods

(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 16.39 4.55 3.90 3.41 3.04 2.73 2.48 2.28 2.10 1.95 20.49 24.59 17.20 24.59 24.593.50 14.05 3.35 2.87 2.51 2.23 2.01 1.82 1.67 1.54 1.43 15.06 21.07 13.36 20.05 21.074.00 11.53 2.40 2.06 1.80 1.60 1.44 1.31 1.20 1.11 1.03 11.53 18.44 10.85 15.98 18.444.50 9.11 1.69 1.45 1.27 1.12 1.01 0.92 0.84 0.78 0.72 9.11 16.39 9.11 13.04 16.395.00 7.38 1.23 1.05 0.92 0.82 0.74 0.67 7.38 14.75 7.84 10.88 14.495.50 6.10 0.92 0.79 0.69 6.10 13.41 6.88 9.27 12.36


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 20.27 5.63 4.83 4.22 3.75 3.38 3.07 2.82 2.60 2.41 25.24 30.41 21.46 30.41 30.413.50 17.38 4.14 3.55 3.10 2.76 2.48 2.26 2.07 1.91 1.77 18.54 26.07 16.72 24.84 26.074.00 14.20 2.96 2.53 2.22 1.97 1.77 1.61 1.48 1.36 1.27 14.20 22.81 13.61 19.83 22.814.50 11.22 2.08 1.78 1.56 1.38 1.25 1.13 1.04 0.96 0.89 11.22 20.27 11.45 16.22 20.275.00 9.09 1.51 1.30 1.14 1.01 0.91 0.83 0.76 0.70 9.09 18.25 9.86 13.56 17.945.50 7.51 1.14 0.98 0.85 0.76 0.68 7.51 16.59 8.66 11.57 15.32


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 17.56 4.18 3.58 3.14 2.79 2.51 2.28 2.09 1.93 1.79 23.43 26.34 16.54 24.92 26.344.00 15.36 3.20 2.74 2.40 2.13 1.92 1.75 1.60 1.48 1.37 17.94 23.05 13.43 19.84 23.054.50 13.66 2.53 2.17 1.90 1.69 1.52 1.38 1.26 1.17 1.08 14.18 20.49 11.27 16.17 20.495.00 11.48 1.91 1.64 1.44 1.28 1.15 1.04 0.96 0.88 0.82 11.48 18.44 9.70 13.49 18.025.50 9.49 1.44 1.23 1.08 0.96 0.86 0.78 0.72 9.49 16.76 8.51 11.48 15.366.00 7.97 1.11 0.95 0.83 0.74 7.97 15.36 7.58 9.94 13.23

33

Section 205x65x2.0


Working Allowable loading in kN/sq m Deflection Positive Wind suctionU.D.L. Rail centres in millimetres Span/150 Pressure Number of anti sag rods

(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 18.43 3.84 3.29 2.88 2.56 2.30 2.09 1.92 1.77 1.65 26.12 27.65 15.98 23.65 27.654.50 16.39 3.03 2.60 2.28 2.02 1.82 1.66 1.52 1.40 1.30 20.64 24.58 13.41 19.26 24.585.00 14.75 2.46 2.11 1.84 1.64 1.47 1.34 1.23 1.13 1.05 16.72 22.12 11.54 16.06 21.515.50 13.41 2.03 1.74 1.52 1.35 1.22 1.11 1.02 0.94 0.87 13.82 20.11 10.13 13.67 18.326.00 11.61 1.61 1.38 1.21 1.07 0.97 0.88 0.81 0.74 0.69 11.61 18.43 9.02 11.84 15.766.50 9.89 1.27 1.09 0.95 0.85 0.76 0.69 9.89 17.02 8.14 10.41 13.71



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 21.75 5.18 4.44 3.88 3.45 3.11 2.82 2.59 2.39 2.22 28.91 32.63 20.65 30.88 32.634.00 19.03 3.97 3.40 2.97 2.64 2.38 2.16 1.98 1.83 1.70 22.13 28.55 16.79 24.61 28.554.50 16.92 3.13 2.69 2.35 2.09 1.88 1.71 1.57 1.45 1.34 17.49 25.38 14.11 20.09 25.385.00 14.16 2.36 2.02 1.77 1.57 1.42 1.29 1.18 1.09 1.01 14.16 22.84 12.15 16.78 22.325.50 11.71 1.77 1.52 1.33 1.18 1.06 0.97 0.89 0.82 0.76 11.71 20.76 10.67 14.30 19.046.00 9.84 1.37 1.17 1.02 0.91 0.82 0.75 0.68 9.84 19.03 9.52 12.40 16.41


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 22.90 4.77 4.09 3.58 3.18 2.86 2.60 2.39 2.20 2.04 32.27 34.35 19.97 29.36 34.354.50 20.35 3.77 3.23 2.83 2.51 2.26 2.06 1.88 1.74 1.62 25.50 30.53 16.78 23.94 30.535.00 18.32 3.05 2.62 2.29 2.04 1.83 1.67 1.53 1.41 1.31 20.65 27.48 14.45 19.98 26.675.50 16.65 2.52 2.16 1.89 1.68 1.51 1.38 1.26 1.16 1.08 17.07 24.98 12.69 17.02 22.736.00 14.34 1.99 1.71 1.49 1.33 1.20 1.09 1.00 0.92 0.85 14.34 22.90 11.32 14.76 19.576.50 12.22 1.57 1.34 1.17 1.04 0.94 0.85 0.78 0.72 0.67 12.22 21.14 10.22 12.99 17.04

Section 225x65x1.6

Section 225x65x2.0


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 16.35 2.73 2.34 2.04 1.82 1.64 1.49 1.36 1.26 1.17 20.89 24.53 12.74 17.74 23.785.50 14.87 2.25 1.93 1.69 1.50 1.35 1.23 1.13 1.04 0.97 17.26 22.30 11.18 15.09 20.246.00 13.63 1.89 1.62 1.42 1.26 1.14 1.03 0.95 0.87 0.81 14.50 20.44 9.97 13.07 17.426.50 12.36 1.58 1.36 1.19 1.06 0.95 0.86 0.79 0.73 0.68 12.36 18.87 8.99 11.49 15.157.00 10.66 1.27 1.09 0.95 0.85 0.76 0.69 10.66 17.52 8.19 10.24 13.327.50 9.28 1.03 0.88 0.77 0.69 9.28 16.35 7.53 9.22 11.82


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 20.37 3.40 2.91 2.55 2.26 2.04 1.85 1.70 1.57 1.46 25.82 30.56 15.98 22.09 29.545.50 18.52 2.81 2.41 2.10 1.87 1.68 1.53 1.40 1.30 1.20 21.34 27.78 14.03 18.82 25.156.00 16.98 2.36 2.02 1.77 1.57 1.41 1.29 1.18 1.09 1.01 17.93 25.46 12.51 16.32 21.656.50 15.28 1.96 1.68 1.47 1.31 1.18 1.07 0.98 0.90 0.84 15.28 23.50 11.30 14.36 18.857.00 13.17 1.57 1.34 1.18 1.05 0.94 0.86 0.78 0.72 0.67 13.17 21.83 10.30 12.80 16.587.50 11.48 1.28 1.09 0.96 0.85 0.77 0.70 11.48 20.37 9.47 11.54 14.73



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 26.61 4.43 3.80 3.33 2.96 2.66 2.42 2.22 2.05 1.90 31.75 39.91 20.85 28.38 37.815.50 24.19 3.66 3.14 2.75 2.44 2.20 2.00 1.83 1.69 1.57 26.24 36.28 18.35 24.23 32.186.00 22.05 3.06 2.62 2.30 2.04 1.84 1.67 1.53 1.41 1.31 22.05 33.26 16.40 21.06 27.716.50 18.79 2.41 2.06 1.81 1.61 1.45 1.31 1.20 1.11 1.03 18.79 30.70 14.82 18.58 24.147.00 16.20 1.93 1.65 1.45 1.29 1.16 1.05 0.96 0.89 0.83 16.20 28.51 13.52 16.60 21.267.50 14.11 1.57 1.34 1.18 1.05 0.94 0.86 0.78 0.72 0.67 14.11 26.61 12.44 14.98 18.92

Section 235x65x1.6

Section 235x65x2.0

Section 235x65x2.5


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.50 19.04 3.53 3.02 2.64 2.35 2.12 1.92 1.76 1.63 1.51 28.62 28.56 13.78 20.55 27.825.00 17.14 2.86 2.45 2.14 1.90 1.71 1.56 1.43 1.32 1.22 23.19 25.70 11.79 17.02 23.355.50 15.58 2.36 2.02 1.77 1.57 1.42 1.29 1.18 1.09 1.01 19.16 23.37 10.30 14.39 19.796.00 14.28 1.98 1.70 1.49 1.32 1.19 1.08 0.99 0.92 0.85 16.10 21.42 9.14 12.39 16.946.50 13.18 1.69 1.45 1.27 1.13 1.01 0.92 0.84 0.78 0.72 13.72 19.77 8.22 10.84 14.677.00 11.83 1.41 1.21 1.06 0.94 0.84 0.77 0.70 11.83 18.36 7.47 9.61 12.83


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.50 19.44 2.95 2.53 2.21 1.96 1.77 1.61 1.47 1.36 1.26 23.70 29.16 12.95 17.96 24.606.00 17.82 2.48 2.12 1.86 1.65 1.49 1.35 1.24 1.14 1.06 19.91 26.73 11.50 15.48 21.086.50 16.45 2.11 1.81 1.58 1.41 1.27 1.15 1.05 0.97 0.90 16.97 24.68 10.35 13.56 18.267.00 14.63 1.74 1.49 1.31 1.16 1.04 0.95 0.87 0.80 0.75 14.63 22.92 9.41 12.03 15.997.50 12.74 1.42 1.21 1.06 0.94 0.85 0.77 0.71 12.74 21.39 8.63 10.80 14.148.00 11.20 1.17 1.00 0.88 0.78 0.70 11.20 20.05 7.97 9.78 12.63


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.00 23.34 3.24 2.78 2.43 2.16 1.95 1.77 1.62 1.50 1.39 24.50 35.01 15.10 19.98 26.966.50 20.87 2.68 2.29 2.01 1.78 1.61 1.46 1.34 1.24 1.15 20.87 32.32 13.61 17.54 23.377.00 18.00 2.14 1.84 1.61 1.43 1.29 1.17 1.07 0.99 0.92 18.00 30.01 12.39 15.60 20.497.50 15.68 1.74 1.49 1.31 1.16 1.05 0.95 0.87 0.80 0.75 15.68 28.01 11.37 14.03 18.168.00 13.78 1.44 1.23 1.08 0.96 0.86 0.78 0.72 13.78 26.26 10.52 12.74 16.248.50 12.21 1.20 1.03 0.90 0.80 0.72 12.21 24.71 9.78 11.66 14.65



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.50 18.75 2.40 2.06 1.80 1.60 1.44 1.31 1.20 1.11 1.03 22.69 28.13 9.19 12.82 18.157.00 17.41 2.07 1.78 1.55 1.38 1.24 1.13 1.04 0.96 0.89 19.57 26.12 8.31 11.27 15.767.50 16.25 1.81 1.55 1.35 1.20 1.08 0.99 0.90 0.83 0.77 17.05 24.38 7.58 10.03 13.828.00 14.98 1.56 1.34 1.17 1.04 0.94 0.85 0.78 0.72 14.98 22.86 6.98 9.02 12.248.50 13.27 1.30 1.12 0.98 0.87 0.78 0.71 13.27 21.51 6.46 8.18 10.949.00 11.84 1.10 0.94 0.82 0.73 11.84 20.32 6.02 7.49 9.86

34

Section 265x65x2.5

Section 225x65x3.0


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 23.02 2.74 2.35 2.06 1.83 1.64 1.49 1.37 1.26 1.17 24.10 34.53 11.01 14.64 20.217.50 21.00 2.33 2.00 1.75 1.56 1.40 1.27 1.17 1.08 1.00 21.00 32.22 10.06 13.06 17.758.00 18.45 1.92 1.65 1.44 1.28 1.15 1.05 0.96 0.89 0.82 18.45 30.21 9.27 11.78 15.758.50 16.35 1.60 1.37 1.20 1.07 0.96 0.87 0.80 0.74 0.69 16.35 28.43 8.59 10.71 14.119.00 14.58 1.35 1.16 1.01 0.90 0.81 0.74 0.68 14.58 26.85 8.01 9.82 12.739.50 13.09 1.15 0.98 0.86 0.77 0.69 13.09 25.44 7.50 9.06 11.58


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.50 24.79 2.75 2.36 2.07 1.84 1.65 1.50 1.38 1.27 1.18 24.79 39.70 12.52 16.06 21.578.00 21.79 2.27 1.95 1.70 1.51 1.36 1.24 1.13 1.05 0.97 21.79 37.21 11.54 14.51 19.188.50 19.30 1.89 1.62 1.42 1.26 1.14 1.03 0.95 0.87 0.81 19.30 35.03 10.71 13.22 17.209.00 17.21 1.59 1.37 1.20 1.06 0.96 0.87 0.80 0.74 0.68 17.21 33.08 9.98 12.13 15.559.50 15.45 1.36 1.16 1.02 0.90 0.81 0.74 0.68 15.45 31.34 9.35 11.21 14.17

10.00 13.94 1.16 1.00 0.87 0.77 0.70 13.94 29.77 8.80 10.41 12.99

Section 300x65x2.0

Section 300x65x2.5

Section 300x65x3.0


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.50 18.48 2.05 1.76 1.54 1.37 1.23 1.12 1.03 0.95 0.88 23.07 27.72 8.57 11.33 15.638.00 17.32 1.80 1.55 1.35 1.20 1.08 0.98 0.90 0.83 0.77 20.28 25.99 7.88 10.19 13.848.50 16.30 1.60 1.37 1.20 1.07 0.96 0.87 0.80 0.74 0.69 17.96 24.46 7.30 9.25 12.379.00 15.40 1.43 1.22 1.07 0.95 0.86 0.78 0.71 16.02 23.10 6.80 8.46 11.149.50 14.38 1.26 1.08 0.95 0.84 0.76 0.69 14.38 21.88 6.37 7.79 10.11

10.00 12.98 1.08 0.93 0.81 0.72 12.98 20.79 5.98 7.21 9.24


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

8.00 23.20 2.42 2.07 1.81 1.61 1.45 1.32 1.21 1.12 1.04 25.01 34.79 10.56 13.40 17.928.50 21.83 2.14 1.83 1.61 1.43 1.28 1.17 1.07 0.99 0.92 22.15 32.75 9.79 12.19 16.049.00 19.76 1.83 1.57 1.37 1.22 1.10 1.00 0.91 0.84 0.78 19.76 30.93 9.13 11.17 14.489.50 17.73 1.56 1.33 1.17 1.04 0.93 0.85 0.78 0.72 17.73 29.30 8.55 10.31 13.17

10.00 16.01 1.33 1.14 1.00 0.89 0.80 0.73 16.01 27.84 8.05 9.57 12.0610.50 14.52 1.15 0.99 0.86 0.77 0.69 14.52 26.51 7.60 8.93 11.10


(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

8.50 26.18 2.57 2.20 1.93 1.71 1.54 1.40 1.28 1.18 1.10 26.18 40.71 12.27 15.10 19.639.00 23.36 2.16 1.85 1.62 1.44 1.30 1.18 1.08 1.00 0.93 23.36 38.44 11.45 13.86 17.759.50 20.96 1.84 1.58 1.38 1.23 1.10 1.00 0.92 0.85 0.79 20.96 36.42 10.73 12.81 16.17

10.00 18.92 1.58 1.35 1.18 1.05 0.95 0.86 0.79 0.73 0.68 18.92 34.60 10.10 11.90 14.8310.50 17.16 1.36 1.17 1.02 0.91 0.82 0.74 0.68 17.16 32.95 9.54 11.12 13.6711.00 15.63 1.18 1.02 0.89 0.79 0.71 15.63 31.45 9.03 10.43 12.68

35

Double span cladding rails are economical in terms of the amount of steel used, but longer lengthsmake erection and handing more difficult than single span.

Double Span Cladding Rail Load Tables



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 16.39 4.55 3.90 3.41 3.04 2.73 2.48 2.28 2.10 1.95 90.79 24.59 24.59 24.59 24.593.50 14.05 3.35 2.87 2.51 2.23 2.01 1.82 1.67 1.54 1.43 66.70 21.07 21.07 21.07 21.074.00 12.29 2.56 2.20 1.92 1.71 1.54 1.40 1.28 1.18 1.10 51.07 18.44 18.04 18.44 18.444.50 10.93 2.02 1.73 1.52 1.35 1.21 1.10 1.01 0.93 0.87 40.35 16.39 15.25 16.39 16.395.00 9.83 1.64 1.40 1.23 1.09 0.98 0.89 0.82 0.76 0.70 32.68 14.75 13.21 14.75 14.755.50 8.94 1.35 1.16 1.02 0.90 0.81 0.74 0.68 27.01 13.41 11.65 13.41 13.416.00 8.20 1.14 0.98 0.85 0.76 0.68 22.70 12.29 10.42 12.29 12.296.50 7.57 0.97 0.83 0.73 19.34 11.35 9.43 11.35 11.357.00 7.02 0.84 0.72 16.67 10.54 8.62 10.54 10.54



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 20.27 5.63 4.83 4.22 3.75 3.38 3.07 2.82 2.60 2.41 111.79 30.41 30.41 30.41 30.413.50 17.38 4.14 3.55 3.10 2.76 2.48 2.26 2.07 1.91 1.77 82.13 26.07 26.07 26.07 26.074.00 15.21 3.17 2.72 2.38 2.11 1.90 1.73 1.58 1.46 1.36 62.88 22.81 22.66 22.81 22.814.50 13.52 2.50 2.15 1.88 1.67 1.50 1.37 1.25 1.16 1.07 49.69 20.27 19.18 20.27 20.275.00 12.16 2.03 1.74 1.52 1.35 1.22 1.11 1.01 0.94 0.87 40.25 18.25 16.62 18.25 18.255.50 11.06 1.68 1.44 1.26 1.12 1.01 0.91 0.84 0.77 0.72 33.26 16.59 14.67 16.59 16.596.00 10.14 1.41 1.21 1.06 0.94 0.84 0.77 0.70 27.95 15.21 13.13 15.21 15.216.50 9.36 1.20 1.03 0.90 0.80 0.72 23.81 14.04 11.89 14.04 14.047.00 8.69 1.03 0.89 0.78 0.69 20.53 13.03 10.87 13.03 13.03



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 17.56 4.18 3.58 3.14 2.79 2.51 2.28 2.09 1.93 1.79 103.80 26.34 26.34 26.34 26.344.00 15.36 3.20 2.74 2.40 2.13 1.92 1.75 1.60 1.48 1.37 79.47 23.05 22.31 23.05 23.054.50 13.66 2.53 2.17 1.90 1.69 1.52 1.38 1.26 1.17 1.08 62.79 20.49 18.85 20.49 20.495.00 12.29 2.05 1.76 1.54 1.37 1.23 1.12 1.02 0.95 0.88 50.86 18.44 16.32 18.44 18.445.50 11.17 1.69 1.45 1.27 1.13 1.02 0.92 0.85 0.78 0.73 42.04 16.76 14.39 16.76 16.766.00 10.24 1.42 1.22 1.07 0.95 0.85 0.78 0.71 35.32 15.36 12.88 15.36 15.366.50 9.45 1.21 1.04 0.91 0.81 0.73 30.10 14.18 11.66 14.18 14.187.00 8.78 1.05 0.90 0.78 0.70 25.95 13.17 10.65 13.17 13.177.50 8.19 0.91 0.78 0.68 22.61 12.29 9.81 12.27 12.29



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 21.75 5.18 4.44 3.88 3.45 3.11 2.82 2.59 2.39 2.22 128.05 32.63 32.63 32.63 32.634.00 19.03 3.97 3.40 2.97 2.64 2.38 2.16 1.98 1.83 1.70 98.04 28.55 27.93 28.55 28.554.50 16.92 3.13 2.69 2.35 2.09 1.88 1.71 1.57 1.45 1.34 77.46 25.38 23.63 25.38 25.385.00 15.23 2.54 2.18 1.90 1.69 1.52 1.38 1.27 1.17 1.09 62.74 22.84 20.48 22.84 22.845.50 13.84 2.10 1.80 1.57 1.40 1.26 1.14 1.05 0.97 0.90 51.85 20.76 18.07 20.76 20.766.00 12.69 1.76 1.51 1.32 1.17 1.06 0.96 0.88 0.81 0.76 43.57 19.03 16.17 19.03 19.036.50 11.71 1.50 1.29 1.13 1.00 0.90 0.82 0.75 0.69 37.13 17.57 14.65 17.57 17.577.00 10.88 1.29 1.11 0.97 0.86 0.78 0.71 32.01 16.31 13.39 16.31 16.317.50 10.15 1.13 0.97 0.85 0.75 0.68 27.89 15.23 12.33 15.23 15.23

36



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 22.90 4.77 4.09 3.58 3.18 2.86 2.60 2.39 2.20 2.04 142.93 34.35 33.22 34.35 34.354.50 20.35 3.77 3.23 2.83 2.51 2.26 2.06 1.88 1.74 1.62 112.94 30.53 28.11 30.53 30.535.00 18.32 3.05 2.62 2.29 2.04 1.83 1.67 1.53 1.41 1.31 91.48 27.48 24.35 27.48 27.485.50 16.65 2.52 2.16 1.89 1.68 1.51 1.38 1.26 1.16 1.08 75.60 24.98 21.49 24.98 24.986.00 15.27 2.12 1.82 1.59 1.41 1.27 1.16 1.06 0.98 0.91 63.53 22.90 19.24 22.90 22.906.50 14.09 1.81 1.55 1.35 1.20 1.08 0.99 0.90 0.83 0.77 54.13 21.14 17.43 21.14 21.147.00 13.09 1.56 1.34 1.17 1.04 0.93 0.85 0.78 0.72 46.67 19.63 15.93 19.63 19.637.50 12.21 1.36 1.16 1.02 0.90 0.81 0.74 0.68 40.66 18.32 14.68 18.26 18.328.00 11.45 1.19 1.02 0.89 0.80 0.72 35.73 17.17 13.61 16.61 17.17



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 18.43 3.84 3.29 2.88 2.56 2.30 2.09 1.92 1.77 1.65 115.71 27.65 26.55 27.65 27.654.50 16.39 3.03 2.60 2.28 2.02 1.82 1.66 1.52 1.40 1.30 91.42 24.58 22.44 24.58 24.585.00 14.75 2.46 2.11 1.84 1.64 1.47 1.34 1.23 1.13 1.05 74.05 22.12 19.43 22.12 22.125.50 13.41 2.03 1.74 1.52 1.35 1.22 1.11 1.02 0.94 0.87 61.20 20.11 17.13 20.11 20.116.00 12.29 1.71 1.46 1.28 1.14 1.02 0.93 0.85 0.79 0.73 51.43 18.43 15.33 18.43 18.436.50 11.34 1.45 1.25 1.09 0.97 0.87 0.79 0.73 0.67 43.82 17.02 13.88 17.02 17.027.00 10.53 1.25 1.07 0.94 0.84 0.75 0.68 37.78 15.80 12.69 15.80 15.807.50 9.83 1.09 0.94 0.82 0.73 32.91 14.75 11.69 14.61 14.758.00 9.22 0.96 0.82 0.72 28.93 13.83 10.83 13.27 13.83



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 16.35 2.73 2.34 2.04 1.82 1.64 1.49 1.36 1.26 1.17 92.52 24.53 21.45 24.53 24.535.50 14.87 2.25 1.93 1.69 1.50 1.35 1.23 1.13 1.04 0.97 76.46 22.30 18.92 22.30 22.306.00 13.63 1.89 1.62 1.42 1.26 1.14 1.03 0.95 0.87 0.81 64.25 20.44 16.93 20.44 20.446.50 12.58 1.61 1.38 1.21 1.08 0.97 0.88 0.81 0.74 0.69 54.75 18.87 15.33 18.87 18.877.00 11.68 1.39 1.19 1.04 0.93 0.83 0.76 0.70 47.20 17.52 14.01 17.52 17.527.50 10.90 1.21 1.04 0.91 0.81 0.73 41.12 16.35 12.91 16.13 16.358.00 10.22 1.06 0.91 0.80 0.71 36.14 15.33 11.97 14.66 15.338.50 9.62 0.94 0.81 0.71 32.01 14.43 11.16 13.43 14.439.00 9.08 0.84 0.72 28.56 13.63 10.46 12.39 13.63



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 20.37 3.40 2.91 2.55 2.26 2.04 1.85 1.70 1.57 1.46 114.38 30.56 26.92 30.56 30.565.50 18.52 2.81 2.41 2.10 1.87 1.68 1.53 1.40 1.30 1.20 94.53 27.78 23.76 27.78 27.786.00 16.98 2.36 2.02 1.77 1.57 1.41 1.29 1.18 1.09 1.01 79.43 25.46 21.28 25.46 25.466.50 15.67 2.01 1.72 1.51 1.34 1.21 1.10 1.00 0.93 0.86 67.68 23.50 19.27 23.50 23.507.00 14.55 1.73 1.48 1.30 1.15 1.04 0.94 0.87 0.80 0.74 58.35 21.83 17.62 21.83 21.837.50 13.58 1.51 1.29 1.13 1.01 0.91 0.82 0.75 0.70 50.83 20.37 16.23 20.19 20.378.00 12.73 1.33 1.14 0.99 0.88 0.80 0.72 44.68 19.10 15.05 18.36 19.108.50 11.98 1.17 1.01 0.88 0.78 0.70 39.58 17.97 14.04 16.83 17.979.00 11.32 1.05 0.90 0.79 0.70 35.30 16.98 13.16 15.53 16.98



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 26.61 4.43 3.80 3.33 2.96 2.66 2.42 2.22 2.05 1.90 140.65 39.91 35.22 39.91 39.915.50 24.19 3.66 3.14 2.75 2.44 2.20 2.00 1.83 1.69 1.57 116.24 36.28 31.14 36.28 36.286.00 22.17 3.08 2.64 2.31 2.05 1.85 1.68 1.54 1.42 1.32 97.67 33.26 27.92 33.26 33.266.50 20.47 2.62 2.25 1.97 1.75 1.57 1.43 1.31 1.21 1.12 83.22 30.70 25.32 30.70 30.707.00 19.00 2.26 1.94 1.70 1.51 1.36 1.23 1.13 1.04 0.97 71.76 28.51 23.16 28.51 28.517.50 17.74 1.97 1.69 1.48 1.31 1.18 1.07 0.99 0.91 0.84 62.51 26.61 21.36 26.22 26.618.00 16.63 1.73 1.48 1.30 1.15 1.04 0.94 0.87 0.80 0.74 54.94 24.94 19.81 23.89 24.948.50 15.65 1.53 1.32 1.15 1.02 0.92 0.84 0.77 0.71 48.67 23.48 18.48 21.94 23.489.00 14.78 1.37 1.17 1.03 0.91 0.82 0.75 0.68 43.41 22.17 17.32 20.28 22.17

37



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 21.42 4.46 3.82 3.35 2.97 2.68 2.43 2.23 2.06 1.91 160.47 32.13 27.30 32.13 32.134.50 19.04 3.53 3.02 2.64 2.35 2.12 1.92 1.76 1.63 1.51 126.79 28.56 22.93 28.56 28.565.00 17.14 2.86 2.45 2.14 1.90 1.71 1.56 1.43 1.32 1.22 102.70 25.70 19.75 25.70 25.705.50 15.58 2.36 2.02 1.77 1.57 1.42 1.29 1.18 1.09 1.01 84.88 23.37 17.35 23.37 23.376.00 14.28 1.98 1.70 1.49 1.32 1.19 1.08 0.99 0.92 0.85 71.32 21.42 15.47 21.42 21.426.50 13.18 1.69 1.45 1.27 1.13 1.01 0.92 0.84 0.78 0.72 60.77 19.77 13.97 18.97 19.777.00 12.24 1.46 1.25 1.09 0.97 0.87 0.79 0.73 0.67 52.40 18.36 12.74 16.81 18.367.50 11.42 1.27 1.09 0.95 0.85 0.76 0.69 45.65 17.14 11.71 15.08 17.148.00 10.71 1.12 0.96 0.84 0.74 40.12 16.06 10.84 13.65 16.06



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 21.39 3.56 3.06 2.67 2.38 2.14 1.94 1.78 1.65 1.53 127.01 32.08 24.83 32.08 32.085.50 19.44 2.95 2.53 2.21 1.96 1.77 1.61 1.47 1.36 1.26 104.97 29.16 21.83 29.16 29.166.00 17.82 2.48 2.12 1.86 1.65 1.49 1.35 1.24 1.14 1.06 88.20 26.73 19.48 26.73 26.736.50 16.45 2.11 1.81 1.58 1.41 1.27 1.15 1.05 0.97 0.90 75.15 24.68 17.59 23.72 24.687.00 15.28 1.82 1.56 1.36 1.21 1.09 0.99 0.91 0.84 0.78 64.80 22.92 16.05 21.05 22.927.50 14.26 1.58 1.36 1.19 1.06 0.95 0.86 0.79 0.73 0.68 56.45 21.39 14.76 18.89 21.398.00 13.37 1.39 1.19 1.04 0.93 0.84 0.76 0.70 49.61 20.05 13.67 17.12 20.058.50 12.58 1.23 1.06 0.93 0.82 0.74 0.67 43.95 18.87 12.73 15.64 18.879.00 11.88 1.10 0.94 0.83 0.73 39.20 17.82 11.91 14.40 17.82



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.50 25.46 3.86 3.31 2.89 2.57 2.31 2.10 1.93 1.78 1.65 129.13 38.19 28.66 38.19 38.196.00 23.34 3.24 2.78 2.43 2.16 1.95 1.77 1.62 1.50 1.39 108.51 35.01 25.62 34.97 35.016.50 21.55 2.76 2.37 2.07 1.84 1.66 1.51 1.38 1.27 1.18 92.46 32.32 23.17 30.70 32.327.00 20.01 2.38 2.04 1.79 1.59 1.43 1.30 1.19 1.10 1.02 79.72 30.01 21.16 27.31 30.017.50 18.67 2.07 1.78 1.56 1.38 1.24 1.13 1.04 0.96 0.89 69.44 28.01 19.47 24.56 28.018.00 17.51 1.82 1.56 1.37 1.22 1.09 0.99 0.91 0.84 0.78 61.04 26.26 18.04 22.30 26.268.50 16.48 1.62 1.38 1.21 1.08 0.97 0.88 0.81 0.75 0.69 54.07 24.71 16.81 20.41 24.719.00 15.56 1.44 1.23 1.08 0.96 0.86 0.79 0.72 48.23 23.34 15.73 18.81 23.319.50 14.74 1.29 1.11 0.97 0.86 0.78 0.71 43.28 22.11 14.79 17.45 21.34



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.00 20.32 2.82 2.42 2.12 1.88 1.69 1.54 1.41 1.30 1.21 117.98 30.47 17.26 25.87 30.476.50 18.75 2.40 2.06 1.80 1.60 1.44 1.31 1.20 1.11 1.03 100.53 28.13 15.50 22.43 28.137.00 17.41 2.07 1.78 1.55 1.38 1.24 1.13 1.04 0.96 0.89 86.68 26.12 14.07 19.72 26.127.50 16.25 1.81 1.55 1.35 1.20 1.08 0.99 0.90 0.83 0.77 75.51 24.38 12.88 17.55 24.198.00 15.24 1.59 1.36 1.19 1.06 0.95 0.87 0.79 0.73 0.68 66.37 22.86 11.88 15.78 21.428.50 14.34 1.41 1.21 1.05 0.94 0.84 0.77 0.70 58.79 21.51 11.03 14.32 19.149.00 13.54 1.25 1.07 0.94 0.84 0.75 0.68 52.44 20.32 10.30 13.10 17.259.50 12.83 1.13 0.96 0.84 0.75 0.68 47.06 19.25 9.66 12.06 15.65

10.00 12.19 1.02 0.87 0.76 0.68 42.47 18.28 9.09 11.18 14.30



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.50 24.79 3.18 2.72 2.38 2.12 1.91 1.73 1.59 1.47 1.36 123.82 37.18 20.54 29.06 37.187.00 23.02 2.74 2.35 2.06 1.83 1.64 1.49 1.37 1.26 1.17 106.77 34.53 18.67 25.62 34.537.50 21.48 2.39 2.05 1.79 1.59 1.43 1.30 1.19 1.10 1.02 93.01 32.22 17.12 22.86 31.078.00 20.14 2.10 1.80 1.57 1.40 1.26 1.14 1.05 0.97 0.90 81.74 30.21 15.81 20.61 27.578.50 18.96 1.86 1.59 1.39 1.24 1.12 1.01 0.93 0.86 0.80 72.41 28.43 14.69 18.75 24.689.00 17.90 1.66 1.42 1.24 1.11 0.99 0.90 0.83 0.77 0.71 64.59 26.85 13.72 17.18 22.289.50 16.96 1.49 1.28 1.12 0.99 0.89 0.81 0.74 0.69 57.97 25.44 12.87 15.85 20.26

10.00 16.11 1.34 1.15 1.01 0.90 0.81 0.73 0.67 52.32 24.17 12.13 14.71 18.5510.50 15.35 1.22 1.04 0.91 0.81 0.73 47.45 23.02 11.46 13.72 17.08

38



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 28.35 3.38 2.89 2.53 2.25 2.03 1.84 1.69 1.56 1.45 126.04 42.53 23.25 31.44 42.537.50 26.46 2.94 2.52 2.21 1.96 1.76 1.60 1.47 1.36 1.26 109.80 39.70 21.33 28.11 37.768.00 24.81 2.58 2.22 1.94 1.72 1.55 1.41 1.29 1.19 1.11 96.50 37.21 19.71 25.39 33.568.50 23.35 2.29 1.96 1.72 1.53 1.37 1.25 1.14 1.06 0.98 85.48 35.03 18.32 23.13 30.109.00 22.05 2.04 1.75 1.53 1.36 1.23 1.11 1.02 0.94 0.88 76.25 33.08 17.11 21.23 27.229.50 20.89 1.83 1.57 1.37 1.22 1.10 1.00 0.92 0.85 0.79 68.43 31.34 16.06 19.61 24.79

10.00 19.85 1.65 1.42 1.24 1.10 0.99 0.90 0.83 0.76 0.71 61.76 29.77 15.13 18.22 22.7310.50 18.90 1.50 1.29 1.13 1.00 0.90 0.82 0.75 0.69 56.02 28.35 14.30 17.01 20.9611.00 18.04 1.37 1.17 1.03 0.91 0.82 0.75 0.68 51.04 27.07 13.56 15.95 19.43



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 19.80 2.36 2.02 1.77 1.57 1.41 1.29 1.18 1.09 1.01 117.34 29.70 15.89 22.28 29.707.50 18.48 2.05 1.76 1.54 1.37 1.23 1.12 1.03 0.95 0.88 102.21 27.72 14.55 19.83 27.358.00 17.32 1.80 1.55 1.35 1.20 1.08 0.98 0.90 0.83 0.77 89.84 25.99 13.42 17.83 24.228.50 16.30 1.60 1.37 1.20 1.07 0.96 0.87 0.80 0.74 0.69 79.58 24.46 12.46 16.18 21.649.00 15.40 1.43 1.22 1.07 0.95 0.86 0.78 0.71 70.98 23.10 11.64 14.80 19.509.50 14.59 1.28 1.10 0.96 0.85 0.77 0.70 63.71 21.88 10.91 13.63 17.69

10.00 13.86 1.15 0.99 0.87 0.77 0.69 57.49 20.79 10.28 12.63 16.1610.50 13.20 1.05 0.90 0.79 0.70 52.15 19.80 9.71 11.76 14.8511.00 12.60 0.95 0.82 0.72 47.52 18.90 9.21 11.00 13.73



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.50 24.74 2.75 2.36 2.06 1.83 1.65 1.50 1.37 1.27 1.18 126.04 37.11 19.51 26.01 35.348.00 23.20 2.42 2.07 1.81 1.61 1.45 1.32 1.21 1.12 1.04 110.78 34.79 18.02 23.45 31.358.50 21.83 2.14 1.83 1.61 1.43 1.28 1.17 1.07 0.99 0.92 98.13 32.75 16.75 21.33 28.079.00 20.62 1.91 1.64 1.43 1.27 1.15 1.04 0.95 0.88 0.82 87.53 30.93 15.65 19.55 25.349.50 19.53 1.71 1.47 1.29 1.14 1.03 0.93 0.86 0.79 0.73 78.56 29.30 14.69 18.04 23.05

10.00 18.56 1.55 1.33 1.16 1.03 0.93 0.84 0.77 0.71 70.90 27.84 13.84 16.74 21.1010.50 17.67 1.40 1.20 1.05 0.94 0.84 0.77 0.70 64.31 26.51 13.08 15.62 19.4311.00 16.87 1.28 1.10 0.96 0.85 0.77 0.70 58.59 25.31 12.41 14.64 17.9911.50 16.14 1.17 1.00 0.88 0.78 0.70 53.61 24.20 11.80 13.77 16.73



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

8.00 28.83 3.00 2.57 2.25 2.00 1.80 1.64 1.50 1.39 1.29 130.94 43.25 22.59 29.00 38.308.50 27.14 2.66 2.28 2.00 1.77 1.60 1.45 1.33 1.23 1.14 115.99 40.71 21.01 26.43 34.369.00 25.63 2.37 2.03 1.78 1.58 1.42 1.29 1.19 1.10 1.02 103.46 38.44 19.63 24.26 31.079.50 24.28 2.13 1.83 1.60 1.42 1.28 1.16 1.06 0.98 0.91 92.85 36.42 18.43 22.42 28.30

10.00 23.07 1.92 1.65 1.44 1.28 1.15 1.05 0.96 0.89 0.82 83.80 34.60 17.37 20.83 25.9510.50 21.97 1.74 1.49 1.31 1.16 1.05 0.95 0.87 0.80 0.75 76.01 32.95 16.42 19.46 23.9311.00 20.97 1.59 1.36 1.19 1.06 0.95 0.87 0.79 0.73 0.68 69.26 31.45 15.57 18.25 22.1911.50 20.06 1.45 1.25 1.09 0.97 0.87 0.79 0.73 0.67 63.37 30.09 14.81 17.19 20.6712.00 19.22 1.33 1.14 1.00 0.89 0.80 0.73 58.20 28.83 14.12 16.24 19.33

39

Sleeved cladding rails employ more components than single span or double span, but shorterlengths make handling and erection simpler. Sleeves are used to increase the load carryingcapacity of the section, by creating a degree of continuity at the supports.

Sleeved Cladding Rail Load Tables



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 20.49 5.69 4.88 4.27 3.79 3.41 3.10 2.85 2.63 2.44 23.06 30.73 25.10 30.73 30.733.50 16.94 4.03 3.46 3.02 2.69 2.42 2.20 2.02 1.86 1.73 16.94 26.34 19.67 26.34 26.344.00 12.97 2.70 2.32 2.03 1.80 1.62 1.47 1.35 1.25 1.16 12.97 23.05 16.11 23.05 23.054.50 10.25 1.90 1.63 1.42 1.27 1.14 1.04 0.95 0.88 0.81 10.25 20.49 13.62 20.37 20.495.00 8.30 1.38 1.19 1.04 0.92 0.83 0.75 0.69 8.30 18.44 11.79 17.00 18.445.50 6.86 1.04 0.89 0.78 0.69 6.86 16.76 10.40 14.48 16.766.00 5.76 0.80 0.69 5.76 15.37 9.31 12.55 15.376.50 4.91 4.91 14.18 8.42 11.04 14.187.00 4.23 4.23 13.17 7.70 9.84 12.75



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.00 25.34 7.04 6.03 5.28 4.69 4.22 3.84 3.52 3.25 3.02 28.39 38.02 31.38 38.02 38.023.50 20.86 4.97 4.26 3.72 3.31 2.98 2.71 2.48 2.29 2.13 20.86 32.58 24.66 32.58 32.584.00 15.97 3.33 2.85 2.50 2.22 2.00 1.81 1.66 1.54 1.43 15.97 28.51 20.23 28.51 28.514.50 12.62 2.34 2.00 1.75 1.56 1.40 1.27 1.17 1.08 1.00 12.62 25.34 17.13 25.34 25.345.00 10.22 1.70 1.46 1.28 1.14 1.02 0.93 0.85 0.79 0.73 10.22 22.81 14.84 21.19 22.815.50 8.45 1.28 1.10 0.96 0.85 0.77 0.70 8.45 20.74 13.10 18.08 20.746.00 7.10 0.99 0.84 0.74 7.10 19.01 11.73 15.69 19.016.50 6.05 0.78 6.05 17.55 10.62 13.82 17.557.00 5.21 5.21 16.29 9.70 12.33 15.88



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 21.95 5.23 4.48 3.92 3.48 3.14 2.85 2.61 2.41 2.24 26.36 32.92 24.34 32.92 32.924.00 19.21 4.00 3.43 3.00 2.67 2.40 2.18 2.00 1.85 1.71 20.18 28.81 19.92 28.81 28.814.50 15.95 2.95 2.53 2.21 1.97 1.77 1.61 1.48 1.36 1.27 15.95 25.61 16.83 25.27 25.615.00 12.92 2.15 1.85 1.61 1.44 1.29 1.17 1.08 0.99 0.92 12.92 23.05 14.57 21.07 23.055.50 10.68 1.62 1.39 1.21 1.08 0.97 0.88 0.81 0.75 0.69 10.68 20.95 12.85 17.94 20.956.00 8.97 1.25 1.07 0.93 0.83 0.75 0.68 8.97 19.21 11.50 15.54 19.216.50 7.64 0.98 0.84 0.73 7.64 17.73 10.41 13.66 17.737.00 6.59 0.78 0.67 6.59 16.46 9.51 12.17 15.827.50 5.74 5.74 15.36 8.76 10.96 14.05



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

3.50 27.19 6.47 5.55 4.86 4.32 3.88 3.53 3.24 2.99 2.77 32.52 40.78 30.42 40.78 40.784.00 23.79 4.96 4.25 3.72 3.30 2.97 2.70 2.48 2.29 2.12 24.90 35.69 24.94 35.69 35.694.50 19.67 3.64 3.12 2.73 2.43 2.19 1.99 1.82 1.68 1.56 19.67 31.72 21.10 31.39 31.725.00 15.93 2.66 2.28 1.99 1.77 1.59 1.45 1.33 1.23 1.14 15.93 28.55 18.28 26.22 28.555.50 13.17 2.00 1.71 1.50 1.33 1.20 1.09 1.00 0.92 0.86 13.17 25.95 16.13 22.35 25.956.00 11.07 1.54 1.32 1.15 1.02 0.92 0.84 0.77 0.71 11.07 23.79 14.44 19.38 23.796.50 9.43 1.21 1.04 0.91 0.81 0.73 9.43 21.96 13.08 17.06 21.967.00 8.13 0.97 0.83 0.73 8.13 20.39 11.95 15.21 19.667.50 7.08 0.79 0.67 7.08 19.03 11.01 13.71 17.48

40



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 28.62 5.96 5.11 4.47 3.98 3.58 3.25 2.98 2.75 2.56 36.30 42.94 29.66 42.94 42.944.50 25.44 4.71 4.04 3.53 3.14 2.83 2.57 2.36 2.17 2.02 28.68 38.16 25.09 37.41 38.165.00 22.90 3.82 3.27 2.86 2.54 2.29 2.08 1.91 1.76 1.64 23.23 34.35 21.75 31.22 34.355.50 19.20 2.91 2.49 2.18 1.94 1.75 1.59 1.45 1.34 1.25 19.20 31.23 19.19 26.60 31.236.00 16.13 2.24 1.92 1.68 1.49 1.34 1.22 1.12 1.03 0.96 16.13 28.62 17.18 23.06 28.626.50 13.75 1.76 1.51 1.32 1.17 1.06 0.96 0.88 0.81 0.76 13.75 26.42 15.56 20.30 26.427.00 11.85 1.41 1.21 1.06 0.94 0.85 0.77 0.71 11.85 24.53 14.22 18.10 23.437.50 10.33 1.15 0.98 0.86 0.76 0.69 10.33 22.90 13.10 16.31 20.828.00 9.08 0.95 0.81 0.71 9.08 21.47 12.15 14.83 18.67



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 23.04 4.80 4.11 3.60 3.20 2.88 2.62 2.40 2.22 2.06 29.39 34.56 23.70 34.56 34.564.50 20.48 3.79 3.25 2.84 2.53 2.28 2.07 1.90 1.75 1.63 23.22 30.72 20.03 30.10 30.725.00 18.43 3.07 2.63 2.30 2.05 1.84 1.68 1.54 1.42 1.32 18.81 27.65 17.34 25.09 27.655.50 15.54 2.36 2.02 1.77 1.57 1.41 1.28 1.18 1.09 1.01 15.54 25.14 15.30 21.35 25.146.00 13.06 1.81 1.55 1.36 1.21 1.09 0.99 0.91 0.84 0.78 13.06 23.04 13.69 18.49 23.046.50 11.13 1.43 1.22 1.07 0.95 0.86 0.78 0.71 11.13 21.27 12.39 16.26 21.277.00 9.60 1.14 0.98 0.86 0.76 0.69 9.60 19.75 11.33 14.48 18.847.50 8.36 0.93 0.80 0.70 8.36 18.43 10.43 13.04 16.738.00 7.35 0.77 7.35 17.28 9.67 11.85 14.99



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 20.44 3.41 2.92 2.55 2.27 2.04 1.86 1.70 1.57 1.46 23.50 30.66 19.16 27.71 30.665.50 18.58 2.82 2.41 2.11 1.88 1.69 1.54 1.41 1.30 1.21 19.42 27.87 16.90 23.58 27.876.00 16.32 2.27 1.94 1.70 1.51 1.36 1.24 1.13 1.05 0.97 16.32 25.55 15.12 20.42 25.556.50 13.90 1.78 1.53 1.34 1.19 1.07 0.97 0.89 0.82 0.76 13.90 23.58 13.69 17.96 23.587.00 11.99 1.43 1.22 1.07 0.95 0.86 0.78 0.71 11.99 21.90 12.51 15.99 20.817.50 10.44 1.16 0.99 0.87 0.77 0.70 10.44 20.44 11.53 14.40 18.488.00 9.18 0.96 0.82 0.72 9.18 19.16 10.69 13.09 16.558.50 8.13 0.80 0.68 8.13 18.04 9.97 11.99 14.969.00 7.25 0.67 7.25 17.03 9.34 11.06 13.61



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 25.46 4.24 3.64 3.18 2.83 2.55 2.31 2.12 1.96 1.82 29.05 38.20 24.04 34.52 38.205.50 23.15 3.51 3.01 2.63 2.34 2.10 1.91 1.75 1.62 1.50 24.01 34.72 21.22 29.40 34.726.00 20.17 2.80 2.40 2.10 1.87 1.68 1.53 1.40 1.29 1.20 20.17 31.83 19.00 25.49 31.836.50 17.19 2.20 1.89 1.65 1.47 1.32 1.20 1.10 1.02 0.94 17.19 29.38 17.21 22.44 29.387.00 14.82 1.76 1.51 1.32 1.18 1.06 0.96 0.88 0.81 0.76 14.82 27.28 15.73 20.00 25.907.50 12.91 1.43 1.23 1.08 0.96 0.86 0.78 0.72 12.91 25.46 14.49 18.02 23.018.00 11.35 1.18 1.01 0.89 0.79 0.71 11.35 23.87 13.44 16.39 20.648.50 10.05 0.99 0.84 0.74 10.05 22.47 12.53 15.03 18.669.00 8.97 0.83 0.71 8.97 21.22 11.75 13.87 17.00



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 33.26 5.54 4.75 4.16 3.70 3.33 3.02 2.77 2.56 2.38 35.72 49.88 31.45 44.34 49.885.50 29.52 4.47 3.83 3.35 2.98 2.68 2.44 2.24 2.06 1.92 29.52 45.35 27.81 37.86 45.356.00 24.81 3.45 2.95 2.58 2.30 2.07 1.88 1.72 1.59 1.48 24.81 41.57 24.93 32.91 41.576.50 21.14 2.71 2.32 2.03 1.81 1.63 1.48 1.35 1.25 1.16 21.14 38.37 22.60 29.03 37.717.00 18.22 2.17 1.86 1.63 1.45 1.30 1.18 1.08 1.00 0.93 18.22 35.63 20.68 25.93 33.227.50 15.88 1.76 1.51 1.32 1.18 1.06 0.96 0.88 0.81 0.76 15.88 33.26 19.07 23.41 29.568.00 13.95 1.45 1.25 1.09 0.97 0.87 0.79 0.73 0.67 13.95 31.18 17.69 21.33 26.558.50 12.36 1.21 1.04 0.91 0.81 0.73 12.36 29.34 16.50 19.59 24.049.00 11.02 1.02 0.87 0.77 0.68 11.02 27.71 15.47 18.10 21.94

41



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

4.00 26.77 5.58 4.78 4.18 3.72 3.35 3.04 2.79 2.57 2.39 40.76 40.16 24.38 39.71 40.164.50 23.80 4.41 3.78 3.31 2.94 2.64 2.40 2.20 2.03 1.89 32.20 35.70 20.47 32.11 35.705.00 21.42 3.57 3.06 2.68 2.38 2.14 1.95 1.78 1.65 1.53 26.08 32.13 17.63 26.59 32.135.50 19.47 2.95 2.53 2.21 1.97 1.77 1.61 1.48 1.36 1.26 21.56 29.21 15.49 22.48 29.216.00 17.85 2.48 2.12 1.86 1.65 1.49 1.35 1.24 1.14 1.06 18.11 26.77 13.81 19.36 26.476.50 15.43 1.98 1.70 1.48 1.32 1.19 1.08 0.99 0.91 0.85 15.43 24.71 12.47 16.93 22.927.00 13.31 1.58 1.36 1.19 1.06 0.95 0.86 0.79 0.73 0.68 13.31 22.95 11.37 15.01 20.057.50 11.59 1.29 1.10 0.97 0.86 0.77 0.70 11.59 21.42 10.45 13.46 17.728.00 10.19 1.06 0.91 0.80 0.71 10.19 20.08 9.68 12.19 15.81



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.00 26.73 4.46 3.82 3.34 2.97 2.67 2.43 2.23 2.06 1.91 32.26 40.10 22.17 33.15 40.105.50 24.30 3.68 3.16 2.76 2.45 2.21 2.01 1.84 1.70 1.58 26.66 36.46 19.49 28.06 36.466.00 22.28 3.09 2.65 2.32 2.06 1.86 1.69 1.55 1.43 1.33 22.40 33.42 17.39 24.19 32.936.50 19.09 2.45 2.10 1.84 1.63 1.47 1.33 1.22 1.13 1.05 19.09 30.85 15.71 21.18 28.537.00 16.46 1.96 1.68 1.47 1.31 1.18 1.07 0.98 0.90 0.84 16.46 28.64 14.33 18.80 24.987.50 14.34 1.59 1.37 1.19 1.06 0.96 0.87 0.80 0.74 0.68 14.34 26.73 13.18 16.87 22.108.00 12.60 1.31 1.13 0.98 0.88 0.79 0.72 12.60 25.06 12.20 15.29 19.738.50 11.16 1.09 0.94 0.82 0.73 11.16 23.59 11.36 13.97 17.779.00 9.96 0.92 0.79 0.69 9.96 22.28 10.64 12.86 16.13



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

5.50 31.83 4.82 4.13 3.62 3.21 2.89 2.63 2.41 2.23 2.07 32.80 47.74 25.59 36.12 47.746.00 27.56 3.83 3.28 2.87 2.55 2.30 2.09 1.91 1.77 1.64 27.56 43.76 22.87 31.22 42.136.50 23.48 3.01 2.58 2.26 2.01 1.81 1.64 1.51 1.39 1.29 23.48 40.40 20.69 27.41 36.527.00 20.25 2.41 2.07 1.81 1.61 1.45 1.31 1.21 1.11 1.03 20.25 37.51 18.89 24.38 32.027.50 17.64 1.96 1.68 1.47 1.31 1.18 1.07 0.98 0.90 0.84 17.64 35.01 17.38 21.93 28.378.00 15.50 1.61 1.38 1.21 1.08 0.97 0.88 0.81 0.75 0.69 15.50 32.82 16.11 19.91 25.388.50 13.73 1.35 1.15 1.01 0.90 0.81 0.73 0.67 13.73 30.89 15.01 18.22 22.899.00 12.25 1.13 0.97 0.85 0.76 0.68 12.25 29.18 14.05 16.80 20.819.50 10.99 0.96 0.83 0.72 10.99 27.64 13.21 15.58 19.05



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.00 25.40 3.53 3.02 2.65 2.35 2.12 1.92 1.76 1.63 1.51 29.96 38.09 15.41 23.10 33.046.50 23.44 3.01 2.58 2.25 2.00 1.80 1.64 1.50 1.39 1.29 25.53 35.16 13.84 20.02 28.367.00 21.77 2.59 2.22 1.94 1.73 1.55 1.41 1.30 1.20 1.11 22.01 32.65 12.56 17.61 24.627.50 19.18 2.13 1.83 1.60 1.42 1.28 1.16 1.07 0.98 0.91 19.18 30.47 11.50 15.67 21.598.00 16.85 1.76 1.50 1.32 1.17 1.05 0.96 0.88 0.81 0.75 16.85 28.57 10.61 14.09 19.138.50 14.93 1.46 1.25 1.10 0.98 0.88 0.80 0.73 0.68 14.93 26.89 9.85 12.79 17.099.00 13.32 1.23 1.06 0.92 0.82 0.74 0.67 13.32 25.40 9.20 11.70 15.409.50 11.95 1.05 0.90 0.79 0.70 11.95 24.06 8.62 10.77 13.98

10.00 10.79 0.90 0.77 0.67 10.79 22.86 8.12 9.98 12.77



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

6.50 30.99 3.97 3.40 2.98 2.65 2.38 2.17 1.99 1.83 1.70 31.45 46.48 18.34 25.95 36.337.00 27.12 3.23 2.77 2.42 2.15 1.94 1.76 1.61 1.49 1.38 27.12 43.16 16.67 22.88 31.577.50 23.62 2.62 2.25 1.97 1.75 1.57 1.43 1.31 1.21 1.12 23.62 40.28 15.29 20.41 27.748.00 20.76 2.16 1.85 1.62 1.44 1.30 1.18 1.08 1.00 0.93 20.76 37.76 14.12 18.40 24.618.50 18.39 1.80 1.55 1.35 1.20 1.08 0.98 0.90 0.83 0.77 18.39 35.54 13.12 16.74 22.049.00 16.40 1.52 1.30 1.14 1.01 0.91 0.83 0.76 0.70 16.40 33.57 12.25 15.34 19.909.50 14.72 1.29 1.11 0.97 0.86 0.77 0.70 14.72 31.80 11.49 14.15 18.09

10.00 13.29 1.11 0.95 0.83 0.74 13.29 30.21 10.83 13.14 16.5610.50 12.05 0.96 0.82 0.72 12.05 28.77 10.24 12.25 15.25

42



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 32.01 3.81 3.27 2.86 2.54 2.29 2.08 1.91 1.76 1.63 32.01 53.16 20.76 28.07 38.317.50 27.89 3.10 2.66 2.32 2.07 1.86 1.69 1.55 1.43 1.33 27.89 49.62 19.05 25.10 33.718.00 24.51 2.55 2.19 1.91 1.70 1.53 1.39 1.28 1.18 1.09 24.51 46.52 17.60 22.67 29.968.50 21.71 2.13 1.82 1.60 1.42 1.28 1.16 1.06 0.98 0.91 21.71 43.78 16.35 20.65 26.879.00 19.36 1.79 1.54 1.34 1.20 1.08 0.98 0.90 0.83 0.77 19.36 41.35 15.28 18.96 24.309.50 17.38 1.52 1.31 1.14 1.02 0.91 0.83 0.76 0.70 17.38 39.17 14.34 17.51 22.13

10.00 15.69 1.31 1.12 0.98 0.87 0.78 0.71 15.69 37.21 13.50 16.27 20.2910.50 14.23 1.13 0.97 0.85 0.75 0.68 14.23 35.44 12.77 15.19 18.7111.00 12.96 0.98 0.84 0.74 12.96 33.83 12.10 14.25 17.35



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.00 24.75 2.95 2.53 2.21 1.96 1.77 1.61 1.47 1.36 1.26 29.80 37.12 14.19 19.89 27.857.50 23.10 2.57 2.20 1.92 1.71 1.54 1.40 1.28 1.18 1.10 25.96 34.65 12.99 17.70 24.428.00 21.65 2.26 1.93 1.69 1.50 1.35 1.23 1.13 1.04 0.97 22.82 32.48 11.99 15.92 21.638.50 20.21 1.98 1.70 1.49 1.32 1.19 1.08 0.99 0.91 0.85 20.21 30.57 11.13 14.45 19.329.00 18.03 1.67 1.43 1.25 1.11 1.00 0.91 0.83 0.77 0.72 18.03 28.87 10.39 13.21 17.419.50 16.18 1.42 1.22 1.06 0.95 0.85 0.77 0.71 16.18 27.35 9.74 12.17 15.80

10.00 14.60 1.22 1.04 0.91 0.81 0.73 14.60 25.99 9.18 11.27 14.4310.50 13.24 1.05 0.90 0.79 0.70 13.24 24.75 8.67 10.50 13.2611.00 12.07 0.91 0.78 0.69 12.07 23.62 8.22 9.82 12.26



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

7.50 30.93 3.44 2.95 2.58 2.29 2.06 1.87 1.72 1.59 1.47 32.01 46.39 17.42 23.22 31.558.00 28.13 2.93 2.51 2.20 1.95 1.76 1.60 1.47 1.35 1.26 28.13 43.49 16.09 20.94 28.008.50 24.92 2.44 2.09 1.83 1.63 1.47 1.33 1.22 1.13 1.05 24.92 40.93 14.96 19.05 25.079.00 22.23 2.06 1.76 1.54 1.37 1.23 1.12 1.03 0.95 0.88 22.23 38.66 13.97 17.46 22.639.50 19.95 1.75 1.50 1.31 1.17 1.05 0.95 0.88 0.81 0.75 19.95 36.63 13.11 16.11 20.58

10.00 18.01 1.50 1.29 1.13 1.00 0.90 0.82 0.75 0.69 18.01 34.79 12.36 14.95 18.8410.50 16.33 1.30 1.11 0.97 0.86 0.78 0.71 16.33 33.14 11.68 13.95 17.3511.00 14.88 1.13 0.97 0.85 0.75 0.68 14.88 31.63 11.08 13.07 16.0611.50 13.62 0.99 0.85 0.74 13.62 30.26 10.54 12.30 14.94



(m) (kN) 1200 1400 1600 1800 2000 2200 2400 2600 2800 0 1 2

8.00 33.25 3.46 2.97 2.60 2.31 2.08 1.89 1.73 1.60 1.48 33.25 54.06 20.17 25.89 34.208.50 29.46 2.89 2.48 2.17 1.93 1.73 1.58 1.44 1.33 1.24 29.46 50.88 18.75 23.59 30.679.00 26.28 2.43 2.09 1.82 1.62 1.46 1.33 1.22 1.12 1.04 26.28 48.06 17.53 21.66 27.749.50 23.58 2.07 1.77 1.55 1.38 1.24 1.13 1.03 0.95 0.89 23.58 45.53 16.45 20.02 25.27

10.00 21.28 1.77 1.52 1.33 1.18 1.06 0.97 0.89 0.82 0.76 21.28 43.25 15.50 18.60 23.1710.50 19.30 1.53 1.31 1.15 1.02 0.92 0.84 0.77 0.71 19.30 41.19 14.66 17.37 21.3711.00 17.59 1.33 1.14 1.00 0.89 0.80 0.73 17.59 39.32 13.91 16.29 19.8111.50 16.09 1.17 1.00 0.87 0.78 0.70 16.09 37.61 13.22 15.34 18.4512.00 14.78 1.03 0.88 0.77 0.68 14.78 36.04 12.61 14.50 17.26

43

Accessories

Sleeve for 145mm deeppurlin thickness to be as

the purlin it is used on













Purlin & Cladding Rail Sleeves

Purlin sleeves are to be incorporated at each joint, on a Sleeved Purlin System.

The sleeve thickness is to be the same as the purlin, or where different thickness purlins areused, the sleeve is to be the same thickness as the thicker purlin meeting at a joint. Sleeves mustbe bolted at all hole positions, to the purlin cleat and to the purlin.

44

402mm

402mm

115mm

100mm

145mm

175mm

195mm

205mm

235mm

270mm

45

Typical Sag Wire / Strut Arrangement

Bays of up to 5m require one strut at mid-span, with a pair of sag wires. Bays greater than 5m, require 2 struts, and third points,each supported by a sag wire.

For tall elevations, with more than 5 sheeting rails, additional diagonal sag wires are required. Therefore, an elevation with 8 sheeting rails, will have one pair of diagonal sag wires in the lowest rail space, with tubular struts up to the 5th rail.

Additional diagonal sag wires will then be required between rails 6 & 7, with tubular struts from rail 6 to rail 8.

Purlin Sag Bars

Sag bars are required to prevent rotationof the purlin flange, under upliftconditions. They should be placed fromthe bottom hole in the upper purlin, tothe upper hole in the lower purlin (See drawing on Page 24)

Please refer to the Load/Span tables forthe number of Sag Rods required. For one Sag Bar, it should be positionedat mid-span. For two sag Bars, they areto be positioned at third points along the span.

Apex Tie

Apex ties are required to tie the purlinsystem together, and should coincidewith Sag Bar positions.

Tubular Struts for Rails

Tubular struts are required to preventsag in sheeting rails, and are supportedby diagonal wire ties.

Diagonal Tie Wires

Diagonal tie wires are required toprevent rail systems from sagging.Diagonal tie wires are to be fixed in thelowest rail spacing, providing support tothe tubular ties. On tall elevations,additional diagonal tie wires arerequired. The maximum number of railssupported by one set of diagonal tiewires, is 5 (See below).

Accessories

46

Purlin Cleats

Cleats are supplied for welding to the rafter back. Cleats with holes for bolting to the rafter backare available on request. If bolted cleats are required, this should be made clear on the order.

Welded cleats should be ordered in sufficient time, to allow them to be delivered to the steelworkfabricator, for attachment to the rafters.

Type 1Bolted or Welded Cleat

Tee Section Cleats may be fabricated or cut from a 152mm x 152mm x 30kg.m UC Section.

Type 2Welded Cleat

Type 3Bolted Cleat

100mm

A

27mm

100mm 100mm

A

27mm

A

27mm

Cleat Type Purlin / Rail Size Dimension 'A' Thickness 't'

Cleat Type 1145mm 115mm 6mm

175mm 145mm 6mm

205mm 175mm 6mm

Cleat Type 1225mm 195mm 8mm

& Cleat Type 2235mm 205mm 8mm

265mm 235mm 8mm

300mm 270mm 10mm

47

Eaves Beam and Sheeting Line

Eaves Beam outer face is to be in line with the cladding rails,to provide a fixing point for the cladding, and for an externalgutter, when required.

The top flange of the Eaves Beam is to be sloped, toapproximate to the rod slope, unless the Eaves Beam is tosupport a boundary wall gutter, when the top flange will behorizontal.

Standard Gauge Lines

Cladco produce purlins in 7 standard sizes, ranging from145mm deep to 300mm deep.

The Sigma shape provides a stable, efficient section, for bothroof and wall applications.

Any number of holes can be punched in the sections,provided they are on the standard gauge lines, in the upperand lower sections and on the centre line.

15mm

Eaves Beam

Sheeting Line

EavesBeam Bracket

Stanchion

Eaves Beam Bracket depth = Sheeting :Line - 24mm

Roof Cladding Line

centreline

holes

115 for 145 deep

145 for 175 deep

175 for 205 deep

195 for 225 deep

205 for 235 deep

235 for 265 deep

270 for 300 deep

15mm

Standard gaugelines for punched14mm dia holes

Bolted Eaves Beam Bracket

Bolted to stanchions to support theeaves beam

Welded Eaves Beam Bracket

Alternative bracket for welding to thestanchion, to support the eaves beam

Eaves Struts

Eaves Struts are required to tie the purlinsystem to the eaves beam (see Page 20for spacing)

48

Typical Eaves Arrangements

The eaves beam can be used to support a boundary wall gutter, within the sheeting line, or anexternal gutter. It is important that the eaves bean is tied into the purlin system, using the Eaves Strut(see page 48)

Verge Arrangement

Various verge details can be developed usingCladco's Sigma Purlins. Purlins can oversail thegable rafter, to provide a verge overhang. Insuch cases, the overhang beyond the rafter,should not exceed 25% of the end bay span.

Parapet Arrangement

Cladco's Sigma Sections can be used toprovide a range of parapet details, masking theroof slope. Care must be taken to check anyloadings applied to vertical members, and toensure adequate connections are made to thesupport structure.

Accessories

49

Firewall Systems using Ashgrid Spacer Systems

Firewalls

Cladco Cladding Rails may be used as part of a Firewall, subject to certain details being incorporated.

The Cladco Cladding Rails will provide lateral support to thecladding, which forms the firewall. In order to do this, the threeperformance criteria of Insulation, Integrity and Stability needto be satisfied. Periods of up to 4 hours are possible, in an 'offthe boundary' situation.

Under heat, the cladding rails will expand, so they should bedetailed 30mm shorter in length, than for a normal bay, andhave slotted holes (60mm x 14mm) at cleat connections, tocater for expansion.

The bottom line of cladding rails are to be single spanning,and connection to the support cleats should incorporate afusible (plastic) washer, which will soften or melt, allowing thecladding rail to move.

Eaves Beams must be the 265mm deep x 2.0mm thick Sigmasection, or a Hot-Rolled section, and in both cases, is to be fireprotected.

Cladco's Technical Department can advise further. Thecladding supplier should be consulted to advise on anyspecific requirements.

EXTE

RNAL

WAL

LS IN

EXC

ESS

OF O

NE M

ETRE

FRO

M

RELE

VANT

BOU

NDAR

YStability/

SYSTEM Integrity Insulation Application

A. Steel Outer Sheet, Steel Liner Panel

1. Outside Rail Construction, with outer sheets laid vertically, incorporating 60/80 glass fibre insulation (12kg/m3) 4 hours 15 mins

2. Outside Rail Construction, with outer sheets laid vertically, incorporating 100mm Rockfibre insulation (23kg/m3) 4 hours 30 mins

3. Outside Rail Construction, with outer sheets laid horizontally, incorporating 60/80 glass fibre insulation (12kg/m3) 4 hours 15 mins

4. Outside Rail Construction, with outer sheets laid horizontally, incorporating 100mm Rockfibre insulation (23kg/m3) 4 hours 30 mins

5. As 1 above but with liner panel fixed inside rail 4 hours 15 mins




B. Aluminium Outer Sheet, Steel Liner Panel

9. As 2, 4, 6, & 8 above 2 hours 15 mins

Floor Beams

50

Mezzanine Floors can add space to buildings by creatingadditional storage or office space. This is a cost effectiveway of creating more space, where a buildings height isnot fully utilised, without the need to extend the footprintof the building.

Cladco's Sigma Purlins are suitable for use as FloorBeams, either as single sections, or as compoundsections, using 2 Sigma Purlins bolted back-to-back.Cladco's Technical Department can advise on suitablesections for various loading and span conditions.

The floor surface can be created by using plywood, fixeddirectly to the top flanges of the Sigma Sections.Alternatively, profiled steel decking, with plywood above,can be used, allowing the Floor Beams to be placed atwider centres.

For single sections, sections should be placed with flangesfacing - ie alternate sections reversed. Supportconnections, either as single span, double span or multi-span, must be to the full depth of the section, to fullysupport the section across the width of the support. Thetop flanges of the Floor Beams must be fully restrained bythe flooring, to prevent twisting of the section. If there is alikelihood of wind uplift being a consideration, then thebottom flanges must be restrained at suitable centres.Deflection is normally limited to Span/200, but Cladco staffcan advise if different deflection limits are to be applied.

For compound sections, consisting of 2 Sigma Sectionsbolted back-to-back, support connections should be by aplate welded to the support structure, between the SigmaSections, for the full width of the support. Sections are to bebolted together, along the span, at max 1000mm centres,using a spacer plate of the same thickness as the supportconnection plate. The top flanges of the Floor Beams mustbe fully restrained by the flooring, to prevent twisting of thesection. If there is a likelihood of wind uplift being aconsideration, then the bottom flanges must be restrainedat suitable centres. Deflection is normally limited toSpan/200, but Cladco staff can advise if different deflectionlimits are to be applied.

51

CertificationThird Party Accreditation for the Cladco Purlin and Cladding Rail products, isprovided by CE Certification by BMTrada.

Robust testing of the sections, at Oxford Brookes University, together with a full auditof the administration and factory processes, involved in the production of CladcoPurlins and Cladding Rails, have resulted in the issue of the CE Certificate.

This gives the specifier confidence, by ensuring that all production, material andaccessory sourcing, and administration, are fully documented and traceable.

CE Certification is an international accreditation system for conformity ofmanufactured products.

Transport, Handling and Storage ofCladco Lightweight Purlins

Purlins, sleeves (if required) and fixings,are delivered in easy to handle packs, withcontents clearly marked. On site, thepacks should be carefully checked againstthe delivery note. Any discrepanciesshould be advised to Cladco immediately,and within 24 hours. Similarly, anydamage incurred in transit, should bereported to Cladco immediately. Failure todo so, will leave the customer liable for anyre-delivery and/or replacement costs.

It is the customer’s responsibility to ensurethat access to the site is suitable for anarticulated delivery vehicle. Any issueswith access to the site should bediscussed with Cladco prior to the deliverybeing made. Any costs relating to theinability of Cladco’s delivery vehiclegaining access to, or onto the site, will beat the customer’s cost.

Purlins should be stored as close aspossible to the final installation location, tominimise on-site handling, which couldlead to damage. They should be stored indry conditions, on a level or slightly slopingsurface.

Water ingress within the packs could leadto white rust forming on the galvanisedsurfaces of the purlins, caused by waterbeing trapped in the interfaces within thepacks. If the packs do get damp, theindividual purlins should be separated,and dried, to avoid white rust forming.Should white rust form, Cladco can adviseon avoiding further deterioration of thegalvanised surface, although the aestheticappearance will be compromised.

Timber bearers, placed at regular intervals,must be used to support the purlin packs.If the bearers are too widely spaced,deformation of the sections could occur.An impervious layer must be provided oneach timber bearer, to avoid contact withthe galvanised surface of the purlins.

When handling purlins, all necessary Healthand Safety precautions must be taken, andit is specifically recommended that anyonehandling the purlins, wears appropriategloves to prevent cuts, etc. Purlins aremanufactured from thin gauge galvanisedmaterial, which have sharp edges.

Installation of Lightweight Purlins

All necessary Health and Safetyprecautions must be taken, when lifting,positioning and fixing purlins.

It is essential that adequate liftingequipment is on site, capable of lifting thepack weights at the required reach, toposition the pack as close to the finallocation as possible.

Purlins are considered as a ‘secondary’structural member, but they are a loadcarrying section, which also tie adjacentstructural frames together. They cansometimes be used to transfer wind loadsalong the building, or as part of the roofbracing system. This means that thecorrect positioning and installation of thepurlins is essential, to ensure that theyperform as required.

The installation of lightweight purlins issimple, although careful reference to thedetailed purlin layout is essential, to ensurethat joints and sleeves (where appropriate)are correctly located.

Cladco purlins are primarily fixed withhexagon headed, grade 8.8, bolts andnuts, with a washer under the head and thenut. The are located through pre-formedholes in the purlins, cleats and sleeves.

Fixers must ensure that all bolts are fullytightened, as the integrity of the wholesystem could be compromised if bolts areleft loose. Fixers must also ensure thateach purlin is correctly positioned, inaccordance with the design layout. Purlinswill be marked with reference numbers (orotherwise) to identify each section. Thedesigner will provide Cladco with thisinformation when the order is placed.

Correctly detailed purlins will locate onto thecleats attached to the rafter back, withoutany forcing or deformation. Any deformationor damage to the purlin could affect theload-carrying capacity of the section.

Cladco purlins will not require anytemporary bracing, although they will notbe fully functional until the cladding sheetsare fixed to the top flange. Prior to fixingthe cladding, it is important to ensure thatthe sections are in line, and that the topflange has not been deformed. Thecladding will provide lateral support to thetop flange of the purlin, through ‘plate’action. If the purlin is deformed prior tofixing of the cladding, then it will not beable to return to it’s correct position, andthe load-carrying capacity of the systemwill be reduced.

Trimmers and other supports forancillary equipment

Trimmers can be fixed between lines ofpurlins, to support ancillary equipment,such as vents or flue opening, providedthe weights of such items are included inthe design loading calculations, whenchoosing the purlin section to be used.

Heavy items should be supported ontrimmers fixed between the webs of thepurlins. These will require fixing holes tobe detailed for inclusion at the time ofmanufacture. Cladco can s pply shortpurlin sections, or folded galvanisedchannels, with appropriate cleats, for thesupport members.

Transportation / Installation

Cladco LtdProducers and stockists for the

roofing & cladding industry.

A complete service in one location

Metal Roofing & CladdingAluminium Profiles

Standing Seam ProfilesRooflights

Steel Tile sheetsFlashings & Accessories

FixingsSealants & Mastics

PurlinsVented SheetsFabrications

GuttersFibre Cement Profiles

Composite PanelsStructural Decking

Structural Liner Trays

Cladco Ltd16 Baronald Street

RutherglenGlasgowG73 1AH

Tel: 0141 647 8866Fax: 0141 647 8872

www.cladco.uk.com

PURLINS & CLADDING RAILSpurlin may be detailed as every other purlin in the run. Checking of the...

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Transcript of PURLINS & CLADDING RAILSpurlin may be detailed as every other purlin in the run. Checking of the...