Catalog Plansee Mixte ComFlor (2)
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5/27/2018 Catalog Plansee Mixte ComFlor (2)
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ComFlor
Corus Panels and Profiles
Composite Floor Decks
July 2008
Cl/Sfb
Uniclass
L3321:P4142
EPIC
C321:X442
(23.9) Hh2
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Contents composite floor decks
Shallow Composite floor DecksContents
ComFlor 46 Page 6
FibreFlor
Principal
Installers
Page 4 and 28
Page 31
Design Information
Construction
Details
Installation
Guidance
Page 32
Page 38
Page 40
ComFlor 51 Page 10 Typical unpropped span 3.0m
Provides an excellent mechanical key into
concrete slab
Excellent fire performance
Design of profile allows for flexible and
efficient placement of shear studs
ComFlor 60 Page 14 Typical unpropped span 4.5m
New state-of-the-art profile with
exceptional spanning capabilities
Utilises new roll forming technology and is
ideal for use in multi storey car parks
Engineered with optional closed ends
providing excellent acoustic performance
ComFlor 80 Page 18 Typical unpropped span 5.0m
Ultra long span 80mm profile available in
Colorcoat pre-finished steel coating to
the underside
Reduced construction costs due to large
span availability
Excellent acoustic properties and ideal for
use in multi-storey car parks
ComFlor 100 Page 24 Typical unpropped span 4.5m
Very strong profile with large unpropped
span capabilities
Massively reduces concrete usage
Suitable for use on masonry walls
Typical unpropped span 3.0m
Simple trapezoidal composite deck with
strong shear bond performance
Ultra efficient nesting capability reducestransport and handling costs
Easy suspension allows ceilings and
lightweight services to be attached
2 Composite Floor Decks
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Contents composite floor decks
Contents Deep Composite floor Decks
Formwork
ComFlor 210 Page 46 Typical unpropped span 5.5m
The original SlimFlor long span steel deck
with capability to achieve unpropped span
of up to 6 metres Structurally efficient and offers excellent
composite action with the concrete
Excellent fire rating
ComFlor 225
(For use with the
Slimdek system)
Page 50 Typical unpropped span 6.0m
State-of-the-art cold formed profile with
fully optimised composite and load
carrying characteristics
Developed specifically for Corus Slimdek
system and with excellent fire properties
Unique structural flooring system usingasymmetric SlimFlor beams. Bottom
flange wider than top
Design
Information
Construction
Details
Installation
Guidance
Page 54
Page 58
Page 62
Profile Range Page 66 Corus manufactures a range of five
profiles, used as permanent formwork
Wide range ensuring optimum solution
available
Temporary propping can be eliminated
Transport
& Handling
References
Health & Safety
Page 68
Page 69
Page 69
Composite Floor Decks 3
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4 Composite Floor Decks
Introduction
FibreFlor Mesh Free Composite Floor System
Benefits of FibreFlor
Cost Savings
Labour cost savings
Up to 20% programme savings
No mesh to purchase, transport or store
Reduction in crane hire costs
Potential concrete volume savings
Easier to Install
No hoisting / lifting or manual handling of mesh
No steel fixing/tying requirements
No spacer requirements
3-Dimensional reinforcement delivered ready mixedin concrete
Easier concrete application (No trip hazards or snagging
from mesh)
Fibre reinforcement always in the correct position
Technical Superiority
Independent testing proves that the FibreFlor system
provides equivalent or superior performance to traditionalwelded wire mesh solutions.
Quality assured concrete reinforcement system.
FibreFlor is proven to reduce plastic shrinkage and
settlement cracking.
Unlike macro-synthetic fibres, the micro-synthetic fibres
in FibreFlor are also proven to mitigate the explosive
spalling tendency of concrete during fires.
The inclusion of steel fibres in FibreFlor provides load
bearing capabilities, increased toughness and long term
crack control.
FibreFlor is a partnership between Corus and Propex
Concrete Systems, the worlds largest supplier of fibre
reinforcement for concrete. FibreFlor uses a combination
of high performance steel fibres and polypropylene
micro-synthetic fibres to provide a three dimensional
fibre reinforced concrete composite slab.
Traditionally composite metal deck construction utilises
mesh fabric reinforcement. This involves the delivery, lifting
and installation of welded wire mesh on to the floor prior tothe pouring of concrete. The time and costs involved make
mesh relatively unpopular with contractors and the mesh
itself is a hindrance to other site operations. Maintaining
the correct mesh height, position, concrete cover and laps
can be difficult during mesh placement and concrete
pouring.
FibreFlor reinforcement is provided within the concrete,
delivered and ready to pump at site. Significantly this can
reduce installation times by up to 20%.
FibreFlor is a certified floor deck system that eliminates the
need for steel wire mesh and is currently available as
FibreFlor CF51, FibreFlor CF60 & FibreFlor CF80.
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Composite Floor Decks 5
Features and benefitsIntroduction
The benefits of Coruscomposite floor decking
Professional SupportCorus Panels and Profiles maintains a friendly technical
help desk, which is freely available to all Consulting
Engineers and Contractors to assist in Composite flooring
design issues. The technical help desk is available
on 0845 30 88 330.
The comprehensive Comdek software is also freely
available to all professionals who register at
www.coruspanelsandprofiles.co.uk
Quality
To provide the best quality and the most up to date design
information, Corus Panels and Profiles is quality assured to
BS ISO 9001:2000 Quality systems. Corus Panels and
Profiles is an active member of MCRMA (Metal Cladding
and Roll Forming Manufacturers Association), The SCI
(Steel Construction Institute), BCSA (British Constructional
Steelwork Association) and supports the research and
development industry wide.
The widest range of shallow decks
From ComFlor
46 all the way to ComFlor
100 the Corusrange of decks provides the optimum solution for all over
beam applications.
Covering unpropped construction from 2.5 to 4.5 metres
each ComFlor profile offers particular application benefits.
The shallow decks are suitable for conventional composite
construction where the deck is placed onto the top flange
of the steel support beam.
Two deep composite floor decks
ComFlor 210 and ComFlor 225 are both designed to be
used with the Corus Slimdek system, which uses
asymmetric beams. The floor deck lands on the wider
bottom flange of the Asymmetric beam.
With typical unpropped spans extending to 6 metres and
propped spans to 9 metres the deep decks provide clear
open space between beams. The deck is contained within
the beam depth, which provides a very shallow floor zone.
The shape of the deck profiles allow for service integration
and the whole system provides inherent fire resistance.
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ComFlor 46
Nestable
The ultra efficient nesting capability
of ComFlor 46 reduces the
transport volume of the product.
This fact combined with the
simplicity of ComFlor 46 also
makes it ideal for export.
Easy service suspension
Ceilings and lightweight services
can easily be attached to the
punched hangar tabs, which can be
included with ComFlor 46. These
must be specified at time of order.
Low concrete usage
The trapezoidal shape profile of
ComFlor 46 reduces the volume
of concrete used, with resultant
savings in structural and foundation
costs.
ComFlor 46Shallow composite profile
Project: Crowngate Car Park, Worcester.Main Contractor: AMEC Construction
6 Composite Floor Decks
ComFlor 46, first introduced in 1985, is a simple
trapezoidal composite deck with a strong and reliable
shear bond performance. The profile is economic and
nestable, reducing transport and handling costs.
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Composite Floor Decks 7
ComFlor 46
ComFlor 46 Design Information
ComFlor 46 Composite Slab - volume & weight
Weight of Concrete (kN/m2)Concrete
Slab Depth volume Normal weight Concrete Lightweight Concrete(mm) (m3/m2) Wet Dry Wet Dry
110 0.091 2.14 2.10 1.69 1.60
115 0.096 2.26 2.21 1.79 1.69
120 0.101 2.38 2.33 1.88 1.78
130 0.111 2.61 2.56 2.07 1.96
140 0.121 2.85 2.79 2.25 2.13
145 0.126 2.96 2.90 2.35 2.22
150 0.131 3.08 3.02 2.44 2.31
180 0.161 3.79 3.71 3.00 2.84
200 0.181 4.26 4.17 3.37 3.19
240 0.221 5.20 5.09 4.12 3.90
Volume & weight table notes
1. Deck and beam deflection (i.e. ponding)
is not allowed for in the table.
2. Deck and mesh weight is not included
in the weight of concrete figures.
3. Density of concrete is taken as:
Normal weight (wet) 2400 kg/m3
Normal weight (dry) 2350 kg/m3
Lightweight (wet) 1900 kg/m3
Lightweight (dry) 1800 kg/m3
Section Properties (per metre width)
Nominal Design Height to Moment of Ultimate Moment capacity thickness thickness Profile weight Area of steel neutral axis inertia (kNm/m)
(mm) (mm) (kN/m
2
) (mm
2
/m) (mm) (cm
4
/m) Sagging Hogging0.90 0.86 0.09 1137 20.38 41.50 4.63 4.67
1.20 1.16 0.13 1534 20.44 53.00 5.99 6.23
Design Notes
Deck material
Corus Galvatite, hot dip zinc coated steel EN
10326-S280GD+Z275. Guaranteed minimum
yield stress 280N/mm2. Minimum zinc coating
mass 275g/m2
total both sides.
Quick reference tables
The quick reference load/span and fire design
tables, on the following 2 pages are intended as
a guide for initial design, based on the
parameters stated below the tables. Full design
can be carried out using the free Comdek
software. Please refer to page 70 for help on
using the software.
Anti-crack mesh
BS 5950: Part 4 currently recommends that anti-
crack mesh should comprise 0.1% of slab area.
The Eurocode 4 recommendation is that anti-
crack mesh should comprise 0.2% of slab area
for unpropped spans and 0.4% of slab area for
propped spans. The mesh shown in the quick
reference tables complies with EC4 and the
design program defaults to these values. Where
EC4 mesh rules are used, the mesh may be
reduced midspan - see Design Information on
page 32. The reduced British Standard mesh
values may still be used by overriding this default
in the design program.
Where forklift truck (or other similar concentrated
loading) is expected 0.5% minimum percentage
reinforcement should be used over the supports
and 2% elsewhere to control cracking. For
further information refer to Design Notes on
page 32 or SCI AD150.
Mesh top cover must be a minimum of 15mm,
and a maximum of 30mm. Mesh laps are to be
300mm for A142 mesh and 400mm for A193,
A252 & A393 mesh.
Fire
For details of the performance of composite
slabs comprising ComFlor 46 decking under
a fire condition with nominal anti-crack mesh,
please refer to the quick reference fire load tables
in this brochure. For other simplified design
cases or for full fire engineering, refer to the
Comdek software.
Technical services
The Technical Department at Corus offers a
comprehensive advisory service on design of
composite flooring, which is available to all
specifiers and users. Should queries arise which
are not covered by this literature or by the
Comdek software, please contact us.
Technical Hotline
0845 30 88 330
ComFlor46
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ComFlor 46
8 Composite Floor Decks
ComFlor 46 Using Mesh - quick reference tables
ComFlor 46 Span table - normal weight concrete
MAXIMUM SPAN (m)
Deck Thickness (mm)
Props Span Fire Slab Mesh 0.9 1.2Rating Depth Total Applied Load (kN/m2)
(mm) 3.5 5.0 10.0 3.5 5.0 10.0
1 hr 120 A193 2.4 2.4 2.4 2.8 2.8 2.6
Single 1.5 hr 130 A193 2.4 2.4 2.2 2.7 2.7 2.3
span slab 145 A252 2.3 2.4 2.2 2.6 2.6 2.2
& deck 2 hr 200 A393 2.0 2.0 2.0 2.3 2.3 2.3
240 A393 1.9 1.9 1.9 2.2 2.2 2.2
1 hr 120 A193 2.7 2.7 2.7 3.2 3.2 3.1
Double 1.5 hr 130 A193 2.6 2.6 2.6 3.1 3.1 2.7
span slab 145 A252 2.5 2.5 2.5 2.9 2.9 2.6
& deck 2 hr 200 A393 2.2 2.2 2.2 2.5 2.5 2.5
240 A393 2.0 2.0 2.0 2.3 2.3 2.3
120 A393 3.6 3.2 2.5 3.8 3.4 2.7
1 hr 130 A393 3.6 3.3 2.6 3.9 3.5 2.7145 2xA252 3.5 3.2 2.5 3.8 3.4 2.7
Single1.5 hr
130 A393 3.3 3.0 2.3 3.5 3.1 2.5
span slab 145 2xA252 3.2 2.9 2.3 3.3 3.0 2.4
145 2xA252 2.9 2.6 2.1 3.0 2.7 2.2
2 hr 200 2xA393 2.7 2.5 2.0 2.8 2.5 2.1
240 2xA393 2.6 2.4 2.0 2.7 2.5 2.1
120 A393 4.4 4.0 2.9 4.6 4.1 3.2
1 hr 130 A393 4.6 4.1 3.1 4.8 4.3 3.4
145 2xA252 4.7 4.3 3.4 4.9 4.5 3.5
Double1.5 hr
130 A393 3.9 3.5 2.8 4.1 3.6 2.9
span slab 145 2xA252 4.0 3.6 2.9 4.1 3.7 3.0
145 2xA252 3.5 3.2 2.5 3.6 3.3 2.6
2 hr 200 2xA393 4.0 3.8 3.1 4.2 3.8 3.1
240 2xA393 3.7 3.7 3.6 4.5 4.4 3.6
NoTemporaryprops
1LineofTemporaryprops
Project: Alexandrium III Shopping Centre,
Rotterdam.
Main Contractor: Nelissen Van Egteren BV
Installer: Prince Cladding BV
Photo courtesy of Dutch Engineering
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Composite Floor Decks 9
ComFlor 46
ComFlor 46 Using Mesh - quick reference tables
ComFlor 46 Span table - lightweight concrete
MAXIMUM SPAN (m)
Deck Thickness (mm)
Props Span Fire Slab Mesh 0.9 1.2Rating Depth Total Applied Load (kN/m2)
(mm) 3.5 5.0 10.0 3.5 5.0 10.0
1 hr 110 A142 2.7 2.7 2.2 3.1 3.1 2.4
Single 1.5 hr 120 A193 2.7 2.7 2.2 3.0 2.7 2.3
span slab 130 A193 2.6 2.6 2.0 3.0 2.7 2.1
& deck 2 hr 200 A393 2.3 2.3 2.3 2.6 2.6 2.6
240 A393 2.1 2.1 2.1 2.4 2.4 2.4
1 hr 110 A142 3.1 3.1 2.7 3.5 3.5 2.8
Double 1.5 hr 120 A193 3.0 3.0 2.9 3.4 3.4 2.9
span slab 130 A193 2.9 2.9 2.7 3.4 3.4 2.7
& deck 2 hr 200 A393 2.4 2.4 2.4 2.8 2.8 2.8
240 A393 2.3 2.3 2.3 2.6 2.6 2.6
110 A393 3.7 3.3 2.5 3.9 3.5 2.7
1 hr 120 A393 3.8 3.3 2.6 4.0 3.6 2.7130 A393 3.8 3.4 2.6 4.1 3.6 2.8
Single1.5 hr
120 A393 3.4 3.1 2.4 3.6 3.2 2.5
span slab 130 A393 3.5 3.1 2.4 3.6 3.2 2.5
130 A393 3.2 2.8 2.2 3.3 2.9 2.3
2 hr 200 2xA393 2.9 2.6 2.1 2.9 2.7 2.1
240 2xA393 2.8 2.6 2.1 2.9 2.7 2.2
110 A393 4.2 3.8 2.9 4.4 4.0 3.1
1 hr 120 A393 4.5 4.1 3.1 4.7 4.3 3.3
130 A393 4.8 4.4 3.3 4.9 4.6 3.5
Double1.5 hr
120 A393 4.5 4.0 3.1 4.7 4.2 3.2
span slab 130 A393 4.8 4.2 3.3 4.9 4.4 3.4
130 A393 4.4 3.9 3.0 4.5 4.0 3.1
2 hr 200 2xA393 4.5 4.5 4.1 5.5 5.2 4.1
240 2xA393 4.1 4.1 4.1 5.1 5.1 4.8
Parameters assumed for quick reference span tables
Mesh See notes on page 7
Spans Measured centre to centre of supports.
Deck Standard deck material specification (see previous
page).
Bearing width The width of the support is assumed to be 150mm.
Prop width Assumed to be 100mm.
Deflection Construction stage L/130 or 30mm
(ponding has been taken into account).Deflection Composite stage L/350.
Concrete grade The concrete is assumed to be Grade 35 with a
maximum aggregate size of 20mm. The wet weight of
concrete is taken to be normal weight 2400kg/m3
and
lightweight 1900 kg/m3. The modular ratio is 10 for
normal weight and 15 for lightweight concrete.
Construction load 1.5 kN/m2 construction load is taken into account,in
accordance with BS 5950:Part 4. No allowance is
made for heaping of concrete during the casting
operation. See design notes.
Applied load The applied load stated in the tables is to cover
imposed live load, partition loads, finishes, ceilings and
services. However the dead load of the slab itself has
already been taken into account and need not be
considered as part of the applied load.
Simplified fire The fire recommendations in the tables are based on
design method the simplified design method.
Fire engineering The fire engineering (FE) method may be used to
method calculate the additional reinforcement needed for fire,load and span conditions beyond the scope of these
tables. The FE method of design is provided in the
design CD.
Fire insulation The minimum slab thickness indicated in each table,
for each fire rating satisfies the fire insulation
requirements of BS 5950: Part 8.
Span/depth ratio Slab span to depth ratio is limited to 30 for lightweight
concrete and 35 for normal weight concrete.
NoTemporaryprops
1LineofTemporaryprops
Technical Hotline
0845 30 88 330
ComFlor46
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ComFlor 51
Shear studsThe wide trough of ComFlor 51
permits a flexible and efficient
placement of shear studs.
Fire performance of the
composite beams
Even for two hours fire rating, the
top flange of the steel beam does
not require fire protection, when
used with ComFlor 51 composite
deck.
Under floor servicesServices are easy to attach to
ComFlor 51, with the ribs
presenting a dovetailed recessed
groove in the concrete slab at
152.5mm centres. This provides the
perfect connection for service
hangars via a wedge nut or similar
type device.
Fire performance of the slabThe dovetail presents a very small
opening and contributes little to the
transfer of heat through the slab in
the event of fire. Thus a lesser slab
depth is needed for fire design
purposes.
ComFlor 51Shallow composite profile
10 Composite Floor Decks
ComFlor 51 is a traditional dovetail re-entrant composite
floor deck. This profile provides an excellent mechanical
key into the concrete slab, offering a strong shear bond
performance, which is augmented by cross stiffeners
located in the profile trough. ComFlor 51 presents a
virtually flat soffit and a relatively thin slab is required to
meet fire design requirements.
ComFlor 51 shown with
FibreFlor reinforced
concrete.
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Composite Floor Decks 11
ComFlor 51
ComFlor 51 Design Information
Design Notes
Deck material
Corus Galvatite, hot dip zinc coated steel EN
10326-S350GD+Z275. Guaranteed minimum
yield stress 350N/mm2. Minimum zinc coating
mass 275g/m2
total both sides.
Quick reference tables
The quick reference load/span and fire design
tables, on the following 2 pages are intended as
a guide for initial design, based on the
parameters stated below the tables. Full design
can be carried out using the free Comdek
software. Please refer to page 70 for help on
using the software.
Anti-crack mesh
BS 5950: Part 4 currently recommends that anti-
crack mesh should comprise 0.1% of slab area.
The Eurocode 4 recommendation is that anti-
crack mesh should comprise 0.2% of slab area
for unpropped spans and 0.4% of slab area for
propped spans. The mesh shown in the quick
reference tables complies with EC4 and the
design program defaults to these values. Where
EC4 mesh rules are used, the mesh may be
reduced midspan - see Design Information on
page 32. The reduced British Standard mesh
values may still be used by overriding this default
in the design program.
Where forklift truck (or other similar concentrated
loading) is expected 0.5% minimum percentage
reinforcement should be used over the supports
and 2% elsewhere to control cracking. For
further information refer to Design Notes on
page 32 or SCI AD150.
Mesh top cover must be a minimum of 15mm,
and a maximum of 30mm. Mesh laps are to be
300mm for A142 mesh and 400mm for A193,
A252 & A393 mesh.
Fire
For details of the performance of composite
slabs comprising ComFlor 51 decking under
a fire condition with nominal anti-crack mesh,
please refer to the quick reference fire load tables
in this brochure. For other simplified design
cases or for full fire engineering, refer to the
Comdek software.
Technical services
The Technical Department at Corus offers a
comprehensive advisory service on design of
composite flooring, which is available to all
specifiers and users. Should queries arise which
are not covered by this literature or by the
Comdek software, please contact us.
Volume & weight table notes
1. Deck and beam deflection (i.e. ponding)
is not allowed for in the table.
2. Deck and mesh weight is not included
in the weight of concrete figures.
3. Density of concrete is taken as:
Normal weight (wet) 2400 kg/m
3
Normal weight (dry) 2350 kg/m3
Lightweight (wet) 1900 kg/m3
Lightweight (dry) 1800 kg/m3
Section Properties (per metre width)
Nominal Design Height to Moment of Ultimate Moment capacity thickness thickness Profile weight Area of steel neutral axis inertia (kNm/m)
(mm) (mm) (kN/m2) (mm2/m) (mm) (cm4/m) Sagging Hogging
0.90 0.86 0.13 1579 16.74 55.70 5.69 6.99
1.00 0.96 0.14 1759 16.73 62.10 6.34 7.93
1.10 1.06 0.16 1938 16.73 68.50 7.00 8.88
1.20 1.16 0.17 2118 16.72 77.29 10.24 9.81
ComFlor 51 Composite Slab - volume & weight
Weight of Concrete (kN/m2)Concrete
Slab Depth volume Normal weight Concrete Lightweight Concrete(mm) (m3/m2) Wet Dry Wet Dry
101 0.092 2.16 2.12 1.71 1.62
105 0.096 2.26 2.21 1.79 1.69
110 0.101 2.37 2.32 1.88 1.78
115 0.106 2.49 2.44 1.97 1.87
120 0.111 2.61 2.55 2.07 1.96
125 0.116 2.73 2.67 2.16 2.04
130 0.121 2.84 2.78 2.25 2.13
150 0.141 3.32 3.25 2.62 2.49
200 0.191 4.49 4.40 3.56 3.37
240 0.231 5.43 5.32 4.30 4.08
Technical Hotline
0845 30 88 330
Left:
Project: Milton Keynes Football Stadium.Main Contractor: The Buckingham Group
C
omFlor51
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ComFlor 51
12 Composite Floor Decks
FibreFlor CF51 Mesh Free - quick reference tables
Parameters assumed for quick reference span tables
Mesh See notes on page 11. (Mesh is not required for
FibreFlor)
Spans Measured centre to centre of supports.
Deck Standard deck material specification (see previous
page).
Bearing width The width of the support is assumed to be 150mm.
Prop width Assumed to be 100mm.
Deflection Construction stage L/130 or 30mm
(ponding has been taken into account).Deflection Composite stage L/350.
Concrete grade The concrete is assumed to be grade 35 with a
maximum aggregate size of 20mm. The wet weight of
concrete is taken to be normal weight 2400kg/m3
and
lightweight 1900 kg/m3. The modular ratio is 10 for
normal weight and 15 for lightweight concrete.
Construction load 1.5 kN/m2 construction load is taken into account,in
accordance with BS 5950:Part 4. No allowance is
made for heaping of concrete during the casting
operation. See design notes.
Applied load The applied load stated in the tables is to cover
imposed live load, partition loads, finishes, ceilings and
services. However the dead load of the slab itself has
already been taken into account and need not be
considered as part of the applied load.
Simplified fire The fire recommendations in the tables are based on
design method the simplified design method.
Fire engineering The fire engineering (FE) method may be used to
method calculate the additional reinforcement needed for fire,
load and span conditions beyond the scope of thesetables. The FE method of design is provided in the
design CD.
Fire insulation The minimum slab thickness indicated in each table,
for each fire rating satisfies the fire insulation
requirements of BS 5950: Part 8.
Span/depth ratio Slab span to depth ratio is limited to 30 for lightweight
concrete and 35 for normal weight concrete.
FibreFlor CF51 - Span table - normal weight concrete
MAXIMUM SPAN (m)
Deck Thickness (mm)
Props Span Fire Slab FibreFlor 0.9 1.0 1.1 1.2Rating Depth Total Applied Load (kN/m2)
(mm) 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0
1 hr101 26 2.8 2.8 2.5 2.9 2.9 2.7 3.1 3.1 2.8 3.2 3.2 3.0
Single 130 26 2.5 2.5 2.5 2.7 2.7 2.7 2.8 2.8 2.8 3.0 3.0 3.0
span deck1.5 hr
110 31 2.7 2.7 2.2 2.9 2.9 2.3 3.0 3.0 2.4 3.1 3.1 2.4
& slab 140 31 2.5 2.5 2.5 2.6 2.6 2.6 2.8 2.8 2.7 2.9 2.9 2.8
2 hr125 36 2.6 2.6 2.1 2.7 2.7 2.2 2.9 2.9 2.3 3.0 3.0 2.3
150 36 2.5 2.5 2.5 2.6 2.6 2.6 2.7 2.7 2.6 2.8 2.8 2.7
1 hr101 26 3.2 3.2 2.6 3.4 3.4 2.7 3.5 3.5 2.8 3.7 3.7 3.0
Double 130 26 3.1 3.1 2.9 3.2 3.2 3.1 3.3 3.3 3.2 3.4 3.4 3.4
span deck1.5 hr
110 31 3.2 3.2 2.3 3.3 3.1 2.4 3.4 3.2 2.5 3.6 3.3 2.6
& slab 140 31 3.0 3.0 2.7 3.2 3.2 2.8 3.3 3.3 2.9 3.4 3.4 3.0
2 hr125 36 3.1 2.9 2.3 3.2 3.0 2.3 3.3 3.1 2.4 3.4 3.1 2.5
150 36 2.9 2.9 2.7 3.1 3.1 2.7 3.2 3.2 2.8 3.4 3.4 2.9
1 hr101 26 3.6 3.1 2.4 3.8 3.3 2.5 3.9 3.5 2.7 4.1 3.6 2.8
130 26 3.9 3.5 2.7 4.1 3.7 2.8 4.3 3.9 3.0 4.5 4.0 3.1
Double1.5 hr
110 31 3.3 3.0 2.3 3.4 3.1 2.4 3.5 3.2 2.5 3.6 3.3 2.6
span slab 140 31 3.7 3.4 2.7 3.8 3.5 2.8 3.9 3.6 2.9 4.1 3.7 3.0
2 hr125 36 3.1 2.9 2.3 3.2 3.0 2.3 3.3 3.1 2.4 3.4 3.1 2.5
150 36 3.7 3.3 2.7 3.8 3.4 2.7 3.8 3.5 2.8 3.9 3.6 2.9
FibreFlor dosage
26 Steel fibres 25kg/m3, Polypropylene fibres 0.9kg/m3
31 Steel fibres 30kg/m3, Polypropylene fibres 0.9kg/m3
36 Steel fibres 35kg/m3, Polypropylene fibres 0.9kg/m3
NoTemporaryprops
1Lineof
Temporaryprops
Technical Hotline
0845 30 88 330
Project: The Eagle Shopping Centre, Derby.
Main Contractor: Westfield
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Composite Floor Decks 13
ComFlor 51
ComFlor 51 Using Mesh - quick reference tablesComFlor 51 Span table - normal weight concrete
MAXIMUM SPAN (m)
Deck Thickness (mm)
Props Span Fire Slab Mesh 0.9 1.0 1.1 1.2
Rating Depth Total Applied Load (kN/m
2
)(mm) 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0
1 hr 101 A142 2.8 2.8 2.5 2.9 2.9 2.6 3.1 3.1 2.7 3.2 3.2 2.8
Single 1.5 hr 110 A142 2.7 2.7 2.2 2.9 2.9 2.3 3.0 3.0 2.4 3.1 3.0 2.4
span slab 125 A193 2.6 2.5 2.0 2.7 2.5 2.0 2.8 2.6 2.0 2.9 2.6 2.1
& deck 2 hr 200 A393 2.2 2.2 2.2 2.4 2.4 2.4 2.5 2.5 2.5 2.6 2.6 2.6
240 A393 2.1 2.1 2.1 2.2 2.2 2.2 2.3 2.2 2.3 2.4 2.4 2.4
1 hr 101 A142 3.2 3.2 2.6 3.4 3.4 2.7 3.5 3.5 2.8 3.7 3.7 3.0
Double 1.5 hr 110 A142 3.2 3.2 2.4 3.3 3.3 2.6 3.5 3.3 2.7 3.6 3.4 2.7
span slab 125 A193 3.1 3.0 2.3 3.2 3.1 2.4 3.3 3.1 2.5 3.4 3.2 2.5
& deck 2 hr 200 A393 2.6 2.6 2.6 2.8 2.8 2.8 2.9 2.9 2.9 3.0 3.0 3.0
240 A393 2.4 2.4 2.4 2.6 2.6 2.6 2.7 2.7 2.7 2.8 2.8 2.8
101 A252 3.6 3.1 2.4 3.8 3.3 2.5 3.9 3.5 2.7 4.0 3.6 2.8
1 hr 110 A252 3.7 3.3 2.5 3.8 3.4 2.6 4.0 3.5 2.8 4.1 3.7 2.9
125 A393 3.8 3.4 2.6 4.1 3.6 2.8 4.3 3.8 2.9 4.4 4.0 3.1Single
1.5 hr110 A252 3.2 2.9 2.2 3.3 3.0 2.3 3.4 3.0 2.4 3.5 3.1 2.4
span slab 125 A393 3.5 3.2 2.5 3.6 3.3 2.6 3.7 3.3 2.6 3.8 3.4 2.7
125 A393 3.0 2.7 2.1 3.1 2.8 2.2 3.1 2.8 2.2 3.1 2.8 2.2
2 hr 200 2xA393 3.0 2.8 2.3 3.1 2.8 2.3 3.2 2.9 2.4 3.2 3.0 2.4
240 2xA393 3.0 2.8 2.3 3.1 2.9 2.4 3.2 3.0 2.4 3.3 3.0 2.5
101 A252 3.6 3.1 2.4 3.8 3.3 2.5 3.9 3.5 2.7 4.1 3.6 2.8
1 hr 110 A252 3.7 3.3 2.5 3.9 3.4 2.6 4.1 3.6 2.8 4.2 3.8 2.9
125 A393 3.8 3.4 2.6 4.1 3.6 2.8 4.3 3.8 2.9 4.4 4.0 3.1
Double1.5 hr
110 A252 3.7 3.3 2.5 3.9 3.4 2.6 4.0 3.5 2.8 4.0 3.6 2.8
span slab 125 A393 3.8 3.4 2.6 4.1 3.6 2.8 4.3 3.8 2.9 4.4 4.0 3.1
125 A393 3.6 3.2 2.5 3.6 3.3 2.6 3.7 3.3 2.6 3.7 3.3 2.6
2 hr 200 2xA393 4.4 4.0 3.2 4.7 4.3 3.4 4.8 4.4 3.6 4.8 4.4 3.6
240 2xA393 4.6 4.3 3.5 4.9 4.5 3.7 5.2 4.7 3.8 5.4 5.0 4.0
NoTemporaryprops
1LineofTemporaryprops
ComFlor 51 Span table - lightweight concrete
MAXIMUM SPAN (m)
Deck Thickness (mm)
Props Span Fire Slab Mesh 0.9 1.0 1.1 1.2Rating Depth Total Applied Load (kN/m2)
(mm) 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0
1 hr 101 A142 3.0 3.0 2.6 3.1 3.1 2.7 3.3 3.3 2.8 3.4 3.4 2.9
Single 1.5 hr 105 A142 2.9 2.9 2.2 3.1 3.0 2.3 3.2 3.1 2.4 3.4 3.1 2.5
span slab 115 A142 2.7 2.4 1.8 2.7 2.4 1.9 2.8 2.5 1.9 2.9 2.5 2.0
& deck 2 hr 200 A393 2.4 2.4 2.4 2.6 2.6 2.6 2.7 2.7 2.6 2.9 2.9 2.7
240 A393 2.3 2.3 2.3 2.4 2.4 2.4 2.5 2.5 2.5 2.7 2.7 2.7
1 hr 101 A142 3.4 3.4 2.6 3.6 3.6 2.7 3.8 3.8 2.9 3.9 3.9 3.0
Double 1.5 hr 105 A142 3.4 3.3 2.6 3.6 3.4 2.6 3.7 3.5 2.7 3.9 3.6 2.7
span slab 115 A142 3.3 2.9 2.2 3.3 3.0 2.3 3.4 3.0 2.3 3.4 3.0 2.4& deck 2 hr 200 A393 2.8 2.8 2.8 3.0 3.0 3.0 3.2 3.2 3.2 3.3 3.3 3.3
240 A393 2.6 2.6 2.6 2.8 2.8 2.8 3.0 3.0 3.0 3.1 3.1 3.1
101 A252 3.7 3.2 2.4 3.9 3.4 2.6 4.0 3.6 2.7 4.2 3.7 2.8
1 hr 105 A252 3.8 3.3 2.5 4.0 3.5 2.6 4.1 3.6 2.8 4.2 3.7 2.9
115 A393 3.9 3.4 2.6 4.1 3.6 2.7 4.3 3.8 2.9 4.5 4.0 3.0
Single1.5 hr
105 A252 3.3 2.9 2.3 3.5 3.0 2.3 3.5 3.1 2.4 3.6 3.2 2.5
span slab 115 A393 3.7 3.3 2.5 3.8 3.4 2.6 3.9 3.4 2.6 3.9 3.5 2.7
115 A393 3.2 2.8 2.2 3.2 2.9 2.2 3.3 2.9 2.2 3.3 2.9 2.3
2 hr 200 2xA393 3.2 2.9 2.4 3.3 3.0 2.4 3.4 3.1 2.5 3.4 3.1 2.5
240 2xA393 3.2 3.0 2.4 3.3 3.1 2.5 3.4 3.1 2.5 3.5 3.2 2.6
101 A252 3.7 3.2 2.4 3.9 3.4 2.6 4.1 3.6 2.7 4.3 3.8 2.8
1 hr 105 A252 3.8 3.3 2.5 4.0 3.5 2.6 4.2 3.7 2.8 4.4 3.8 2.9
115 A393 3.9 3.4 2.6 4.1 3.6 2.7 4.3 3.8 2.9 4.5 4.0 3.0
Double 1.5 hr 105 A252 3.8 3.3 2.5 4.0 3.5 2.6 4.2 3.7 2.8 4.3 3.8 2.9span slab 115 A393 3.9 3.4 2.6 4.1 3.6 2.7 4.3 3.8 2.9 4.5 4.0 3.0
115 A393 3.9 3.4 2.6 4.1 3.6 2.7 4.3 3.8 2.9 4.4 3.9 3.0
2 hr 200 2xA393 4.7 4.3 3.3 5.0 4.5 3.5 5.3 4.7 3.7 5.5 5.0 3.9
240 2xA393 5.0 4.5 3.6 5.3 4.8 3.8 5.5 5.0 4.0 5.8 5.3 4.2
NoTemporaryprops
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LineofTemporaryprops
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ComFlor 60
Long-span capability
Optimised profile design gives
exceptional unpropped spanning
capability of up to 4.5 metres,
reducing structural steel
requirements and hence cost.
Reduced concrete usage
ComFlor 60 requires a reduced
concrete volume for any slab depth,
providing a more sustainablesolution and reducing costs.
Enhanced shear-stud interaction
Profile design guarantees central
shear-stud positioning to optimise
composite action, reducing the need
for on-site checking.
Excellent acoustic and
fire performance
Manufactured with closed ends to
give exceptional fire protection and
acoustic performance, while
simplifying installation.
Minimal maintenance
Available with Colorcoat pre-
finished steel for durability and
improved appearance.
Safer manual handling
With a cover width of 600mm,
sheets are lightweight, making them
safer and easier to handle.
ComFlor 60The latest addition to the comprehensive
range of flooring profiles by Corus
14 Composite Floor Decks
The ComFlor 60 composite floor profile offers the
ultimate in lightweight steel decking for all multi-rise
buildings. It combines exceptional spanning capabilities
with reduced concrete useage to provide a cost-effective
and attractive floor solution thats easy to install.
The state-of-the-art profile has been developed using
roll-forming techniques pioneered by Corus, drawing on
our 20 years of experience in designing advanced
composite floor systems.
Engineered with optional closed ends, ComFlor 60
provides excellent acoustic performance and fire
protection, with no requirement for filler blocks. Its profile
has been specially designed with trough stiffeners and side
laps positioned to guarantee centrally placed shear studs.
The cover width is just 600mm, creating lightweight
sheets that are easy to handle delivering significant
on-site safety benefits.
ComFlor 60 sheets are available with a Colorcoat
pre-finished steel coated underside giving a durable and
attractive appearance and minimising future maintenance.
Taking the 60 profile concept to a new dimension.
Closed ends: Produced on line during the
roll-forming operation, ideal for single-span
construction, acoustic reduction, fire
stopping and to avoid filler blocks.
ComFlor 60 shown with
FibreFlor reinforced
concrete.
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Composite Floor Decks 15
ComFlor 60
ComFlor 60 Design Information
12018029.7
Cover width 600mm
75
45 37.516
37.5
120 300 180 14
60
15
15.8
Volume & weight table notes
1. Deck and beam deflection (i.e. ponding)
is not allowed for in the table.
2. Deck and mesh weight is not included
in the weight of concrete figures.
3. Density of concrete is taken as:
Normal weight (wet) 2400 kg/m3
Normal weight (dry) 2350 kg/m3
Lightweight (wet) 1900 kg/m3
Lightweight (dry) 1800 kg/m3
Section Properties (per metre width)
Nominal Design Height to Moment of Ultimate Moment capacity thickness thickness Profile weight Area of steel neutral axis inertia (kNm/m)
(mm) (mm) (kN/m2) (mm2/m) (mm) (cm4/m) Sagging Hogging
0.90 0.86 0.103 1276 29.6 92.77 9.30 7.50
1.00 0.96 0.114 1424 30.5 106.15 11.27 9.361.10 1.06 0.125 1572 31.2 119.53 13.24 11.21
1.20 1.16 0.137 1721 31.7 132.91 15.21 13.07
Design Notes
Deck material
Corus Galvatite, hot dip zinc coated steel EN
10326-S350GD+Z275. Guaranteed minimum
yield stress 350N/mm2. Minimum zinc coating
mass 275g/m2
total both sides.
Quick reference tables
The quick reference load/span and fire design
tables, on the following 2 pages are intended as
a guide for initial design, based on the
parameters stated below the tables. Full design
can be carried out using the free Comdek
software available. Please refer to page 70 for
help on using the software.
Anti-crack mesh
BS 5950: Part 4 currently recommends that
anti-crack mesh should comprise 0.1% of slab
area. The Eurocode 4 recommendation is that
anti-crack mesh should comprise 0.2% of slab
area for unpropped spans and 0.4% of slab area
for propped spans. The mesh shown in the quick
reference tables complies with EC4 and the
design program defaults to these values. Where
EC4 mesh rules are used, the mesh may be
reduced midspan - see Design Information on
page 32. The reduced British Standard mesh
values may still be used by overriding this default
in the design program.
Where forklift truck (or other similar concentrated
loading) is expected 0.5% minimum percentage
reinforcement should be used over the supports
and 2% elsewhere to control cracking. For
further information refer to Design Notes on
page 32, or SCI AD150.
Mesh top cover must be a minimum of 15mm,
and a maximum of 30mm. Mesh laps are to be
300mm for A142 mesh and 400mm for A193,
A252 & A393 mesh.
Fire
For details of the performance of composite
slabs comprising ComFlor 60 decking under
a fire condition with nominal anti-crack mesh,
please refer to the quick reference fire load tables
in this brochure. For other simplified design
cases or for full fire engineering, refer to the
Comdek software.
Technical services
The Technical Department at Corus offers a
comprehensive advisory service on design of
composite flooring, which is available to all
specifiers and users. Should queries arise which
are not covered by this literature or by the
Comdek software, please contact us.
ComFlor 60 Composite Slab - volume & weight
Weight of Concrete (kN/m2)Concrete
Slab Depth volume Normal weight Concrete Lightweight Concrete(mm) (m3/m2) Wet Dry Wet Dry
120 0.087 2.05 2.00 1.62 1.53
130 0.097 2.28 2.23 1.81 1.71
140 0.107 2.52 2.46 1.99 1.89150 0.117 2.75 2.69 2.18 2.06
160 0.127 2.99 2.93 2.36 2.24
170 0.137 3.22 3.16 2.55 2.42
180 0.147 3.46 3.39 2.74 2.59
190 0.157 3.69 3.62 2.92 2.77
200 0.167 3.93 3.85 3.11 2.95
250 0.217 5.11 5.00 4.04 3.83
Decking material: Corus Galvatite, hot dip zinc coated steel EN 10326-S350GD+Z275
Technical Hotline
0845 30 88 330
ComFlor60
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ComFlor 60
16 Composite Floor Decks
FibreFlor CF60 Mesh Free - quick reference tables
Parameters assumed for quick reference span tables
Mesh See notes on previous page. (Mesh is not required for
FibreFlor)
Spans Measured centre to centre of supports.
Deck Standard deck material specification (see previous
page).
Bearing width The width of the support is assumed to be 150mm.
Prop width Assumed to be 100mm.
Deflection Construction stage L/130 or 30mm
(ponding has been taken into account).
Deflection Composite stage L/350.
Concrete grade The concrete is assumed to be grade 35 with a
maximum aggregate size of 20mm. The wet weight of
concrete is taken to be normal weight 2400kg/m3
and
lightweight 1900 kg/m3. The modular ratio is 10 for
normal weight and 15 for lightweight concrete.
Construction load 1.5 kN/m2 construction load is taken into account,in
accordance with BS 5950:Part 4. No allowance is
made for heaping of concrete during the casting
operation. See design notes.
Applied load The applied load stated in the tables is to cover
imposed live load, partition loads, finishes, ceilings and
services. However the dead load of the slab itself has
already been taken into account and need not be
considered as part of the applied load.
Simplified fire The fire recommendations in the tables are based on
design method the simplified design method.
Fire engineering The fire engineering (FE) method may be used to
method calculate the additional reinforcement needed for fire,
load and span conditions beyond the scope of these
tables. The FE method of design is provided in the
design CD.
Fire insulation The minimum slab thickness indicated in each table,
for each fire rating satisfies the fire insulation
requirements of BS 5950: Part 8.
Span/depth ratio Slab span to depth ratio is limited to 30 for lightweight
concrete and 35 for normal weight concrete.
FibreFlor CF60 - Span table - normal weight concrete
MAXIMUM SPAN (m)
Deck Thickness (mm)
Props Span Fire Slab FibreFlor 0.9 1.0 1.1 1.2Rating Depth Total Applied Load (kN/m2)
(mm) 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0
1 hr130 26 3.5 3.5 2.9 3.6 3.6 3.0 3.7 3.7 3.1 3.9 3.9 3.2
Single 160 26 3.2 3.2 3.2 3.4 3.4 3.3 3.5 3.5 3.5 3.6 3.6 3.6
span slab1.5 hr
140 31 3.2 2.9 2.3 3.3 3.1 2.4 3.5 3.2 2.5 3.6 3.3 2.6
& deck 170 31 3.1 3.1 2.7 3.3 3.3 2.8 3.4 3.4 2.9 3.5 3.5 3.0
2 hr150 36 2.810 3.112 3.216 2.810 3.012 3.216 3.412 3.112 3.216 3.412 3.012 3.216
180 36 3.010 3.112 3.116 3.010 3.212 3.216 3.312 3.212 3.316 3.512 3.212 3.516
1 hr130 26 3.6 3.6 3.0 3.9 3.9 3.1 4.2 4.1 3.2 4.5 4.2 3.3
Double 160 26 3.3 3.3 3.3 3.7 3.7 3.5 4.0 4.0 3.6 4.2 4.2 3.7
span slab 1.5 hr 140 31 3.5 3.1 2.5 3.6 3.2 2.5 3.8 3.4 2.6 3.9 3.5 2.8& deck 170 31 3.2 3.2 2.7 3.6 3.6 2.9 3.9 3.8 3.0 4.1 3.9 3.1
2 hr150 36 3.312 3.416 3.116 3.312 3.816 3.116 3.312 4.016 3.116 3.312 4.016 3.116
180 36 3.112 3.112 3.116 3.512 3.212 3.416 3.512 3.212 3.416 3.512 3.212 3.416
1 hr130 26 4.3 3.8 3.0 4.5 3.9 3.1 4.6 4.2 3.2 4.8 4.3 3.3
160 26 4.7 4.2 3.3 4.9 4.4 3.5 5.0 4.6 3.6 5.2 4.7 3.7
Double1.5 hr
140 31 3.5 3.1 2.5 3.6 3.2 2.5 3.8 3.4 2.6 3.9 3.5 2.8
span slab 170 31 3.9 3.6 2.7 4.1 3.7 2.9 4.2 3.8 3.0 4.3 3.9 3.1
2 hr150 36 4.316 4.720 3.720 4.316 4.720 3.720 4.316 4.720 3.720 4.316 4.720 3.720
180 36 4.516 5.120 4.120 4.516 5.120 4.120 4.516 5.120 4.120 4.516 5.120 4.120
XXSS The superscript is the size of bar required (2hour fire ratings); one bar per deck trough - cover 25mm
FibreFlor dosage
26 Steel fibres 25kg/m3, Polypropylene fibres 0.9kg/m3
31 Steel fibres 30kg/m3, Polypropylene fibres 0.9kg/m3
36 Steel fibres 35kg/m3, Polypropylene fibres 0.9kg/m3
NoTemporaryprops
1Lineof
Temporaryprops
Technical Hotline
0845 30 88 330
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Composite Floor Decks 17
ComFlor 60
ComFlor 60 Using Mesh - quick reference tables
ComFlor 60 Span table - normal weight concrete
MAXIMUM SPAN (m)
Deck Thickness (mm)
Props Span Fire Slab Mesh 0.9 1.0 1.1 1.2Rating Depth Total Applied Load (kN/m2)
(mm) 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0
130 A142 3.5 3.2 2.3 3.6 3.3 2.3 3.7 3.4 2.4 3.9 3.4 2.5
1 hr 130 A252 3.5 3.5 2.6 3.6 3.6 2.7 3.7 3.7 2.7 3.9 3.9 2.8
Single 160 A252 3.2 3.2 2.9 3.4 3.4 3.0 3.5 3.5 3.0 3.6 3.6 3.1
span slab1.5 hr
140 A193 3.4 2.9 2.1 3.5 3.0 2.2 3.6 3.1 2.2 3.7 3.1 2.3
& deck 170 A252 3.1 3.1 2.4 3.3 3.3 2.5 3.4 3.4 2.5 3.5 3.5 2.6
2 hr150 A193 2.9 2.5 1.9 3.0 2.5 1.9 3.0 2.5 1.9 3.0 2.6 1.9
180 A252 3.1 3.0 2.1 3.2 3.0 2.1 3.3 3.0 2.2 3.5 3.0 2.2
130 A142 3.6 3.6 2.7 3.9 3.8 2.8 4.2 3.9 2.9 4.5 3.9 2.9
1 hr 130 A252 3.6 3.6 3.2 3.9 3.9 3.2 4.2 4.2 3.3 4.5 4.5 3.3Double 160 A252 3.3 3.3 3.3 3.7 3.7 3.7 4.0 4.0 3.8 4.2 4.2 3.8
span slab1.5 hr
140 A193 3.5 3.5 2.6 3.8 3.6 2.6 4.1 3.6 2.7 4.1 3.6 2.7
& deck 170 A252 3.2 3.2 3.2 3.6 3.6 3.2 3.9 3.9 3.3 4.1 4.1 3.3
2 hr150 A193 3.4 3.0 2.3 3.5 3.1 2.3 3.5 3.1 2.4 3.5 3.1 2.4
180 A252 3.1 3.1 2.8 3.5 3.5 2.8 3.8 3.8 2.9 4.1 3.9 2.9
1 hr130 A393 4.6 4.1 3.2 4.7 4.2 3.3 4.8 4.3 3.3 4.8 4.3 3.4
160 2xA252 5.0 4.5 3.6 5.1 4.6 3.7 5.2 4.7 3.7 5.2 4.7 3.8
Double1.5 hr
140 A393 4.1 3.7 2.9 4.1 3.7 2.9 4.2 3.8 2.9 4.2 3.8 3.0
span slab 170 2xA252 4.3 3.9 3.1 4.4 4.0 3.2 4.5 4.1 3.2 4.5 4.1 3.3
2 hr150 A393 3.7 3.3 2.6 3.7 3.4 2.6 3.8 3.4 2.7 3.8 3.4 2.7
180 2xA252 3.9 3.5 2.8 3.9 3.6 2.9 4.0 3.6 2.9 4.0 3.6 2.9
NoTem
poraryprops
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Temporaryprops
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ComFlor 80
Central stud placement provides
superb composite action between
the beam and concrete due to the
stud being positioned exactly in the
centre of the trough. This ensures
the correct concrete cover to the
stud and hence, the full design
capacity of the stud is developed.
The central location of the stud also
reduces on-site checking to ensure
that the stud has been positioned
correctly.
Ideal for car parks
ComFlor 80 is available with a
Colorcoat pre-finished steel
underside for use in car parks,
giving a durable and attractive
appearance and minimising future
maintenance.
Excellent concrete usage means
that ComFlor 80 is very economical
compared to other similar decks.
Improved manual handling
The cover width of ComFlor 80 is
600mm, to reduce sheet weight and
improve handling.
The innovative profile design provides real benefits.
ComFlor 80 is fully tested with the
Fibreflor system to provide all the no
mesh benefits. See following pages
for the load tables and further design
information.
FibreFlor mesh free system
ComFlor 80The next generation of
profiled steel composite decks
18 Composite Floor Decks
ComFlor 80 is the next generation of profiled steel
composite decks; it is the only 80mm profile available in
Colorcoat pre-finished steel to provide a durable and
attractive appearance.
The large corner curvature detail provides a very efficient
profile. In conjunction with the higher grade of steel, it ensures
typical unpropped spans of 4.4m simply supported and in the
continuous condition, spans of 5m can be achieved.
The large spans achievable means less structural steel
and thus cost saving in the overall construction cost,
providing more scope for architects and engineers in their
design process.
ComFlor 80 shown with
FibreFlor reinforced
concrete.
Project: Apartments, St. Catherines Court,
Pontypridd.
Main Contractor: OPCO Construction
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Composite Floor Decks 19
ComFlor 80
ComFlor 80 Design Information
90 120180
Cover width 600mm
95
50 3517.2
35
180 300 120
80
15
15.8
Volume & weight table notes
1. Deck and beam deflection (i.e. ponding)
is not allowed for in the table.
2. Deck and mesh weight is not included
in the weight of concrete figures.
3. Density of concrete is taken as:
Normal weight (wet) 2400 kg/m3
Normal weight (dry) 2350 kg/m3
Lightweight (wet) 1900 kg/m3
Lightweight (dry) 1800 kg/m3
Section Properties (per metre width)
Nominal Design Height to Moment of Ultimate Moment capacity
thickness thickness Profile weight Area of steel neutral axis inertia (kNm/m)(mm) (mm) (kN/m2) (mm2/m) (mm) (cm4/m) Sagging Hogging
0.90 0.86 0.12 1387 47.6 185 15.4 12.5
1.20 1.16 0.15 1871 47.6 245 22.2 18.5
Design Notes
Deck material
Corus Galvatite, hot dip zinc coated steel EN
10326-S450GD+Z275. Guaranteed minimum
yield stress 450N/mm2. Minimum zinc coating
mass 275g/m2
total both sides.
Quick reference tables
The quick reference load/span and fire design
tables, on the following 2 pages are intended as
a guide for initial design, based on the
parameters stated below the tables. Full design
can be carried out using the free Comdek
software available. Please refer to page 70 for
help on using the software.
Anti-crack mesh
BS 5950: Part 4 currently recommends that
anti-crack mesh should comprise 0.1% of slab
area. The Eurocode 4 recommendation is that
anti-crack mesh should comprise 0.2% of slab
area for unpropped spans and 0.4% of slab area
for propped spans. The mesh shown in the quick
reference tables complies with EC4 and the
design program defaults to these values. Where
EC4 mesh rules are used, the mesh may be
reduced midspan - see Design Information on
page 32. The reduced British Standard mesh
values may still be used by overriding this default
in the design program.
Where forklift truck (or other similar concentrated
loading) is expected 0.5% minimum percentage
reinforcement should be used over the supports
and 2% elsewhere to control cracking. For
further information refer to Design Notes on
page 32 or SCI AD150.
Mesh top cover must be a minimum of 15mm,
and a maximum of 30mm. Mesh laps are to be
300mm for A142 mesh and 400mm for A193,
A252 & A393 mesh.
Fire
For details of the performance of composite
slabs comprising ComFlor 80 decking under
a fire condition with nominal anti-crack mesh,
please refer to the quick reference fire load tables
in this brochure. For other simplified design
cases or for full fire engineering, refer to the
Comdek software.
Technical services
The Technical Department at Corus offers a
comprehensive advisory service on design of
composite flooring, which is available to all
specifiers and users. Should queries arise which
are not covered by this literature or by the
Comdek software, please contact us.
ComFlor 80 Composite Slab - volume & weight
Weight of Concrete (kN/m2)Concrete
Slab Depth volume Normal weight Concrete Lightweight Concrete(mm) (m3/m2) Wet Dry Wet Dry
130 0.086 2.03 1.99 1.61 1.53
140 0.096 2.27 2.22 1.80 1.70
150 0.106 2.51 2.45 1.98 1.88
160 0.116 2.74 2.68 2.17 2.06
170 0.126 2.98 2.91 2.36 2.23
180 0.136 3.21 3.14 2.54 2.41
190 0.146 3.45 3.38 2.73 2.59
200 0.156 3.68 3.61 2.92 2.76
250 0.206 4.86 4.76 3.85 3.64
Technical Hotline
0845 30 88 330
ComFlor80
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ComFlor 80
20 Composite Floor Decks
FibreFlor CF80 Mesh Free - quick reference tables
Parameters assumed for quick reference span tables
Mesh See notes on page 19. (Mesh is not required for
FibreFlor)
Spans Measured centre to centre of supports.
Deck Standard deck material specification (see previous
page).
Bearing width The width of the support is assumed to be 150mm.
Prop width Assumed to be 100mm.
Deflection Construction stage L/130 or 30mm
(ponding has been taken into account).Deflection Composite stage L/350.
Concrete grade The concrete is assumed to be grade 35 with a
maximum aggregate size of 20mm. The wet weight of
concrete is taken to be normal weight 2400kg/m3
and
lightweight 1900 kg/m3. The modular ratio is 10 for
normal weight and 15 for lightweight concrete.
Construction load 1.5 kN/m2 construction load is taken into account,in
accordance with BS 5950:Part 4. No allowance is
made for heaping of concrete during the casting
operation. See design notes.
Applied load The applied load stated in the tables is to cover
imposed live load, partition loads, finishes, ceilings and
services. However the dead load of the slab itself has
already been taken into account and need not be
considered as part of the applied load.
Simplified fire The fire recommendations in the tables are based on
design method the simplified design method.
Fire engineering The fire engineering (FE) method may be used to
method calculate the additional reinforcement needed for fire,
load and span conditions beyond the scope of thesetables. The FE method of design is provided in the
design CD.
Fire insulation The minimum slab thickness indicated in each table,
for each fire rating satisfies the fire insulation
requirements of BS 5950: Part 8.
Span/depth ratio Slab span to depth ratio is limited to 30 for lightweight
concrete and 35 for normal weight concrete.
FibreFlor CF80 - Span table - normal weight concrete
MAXIMUM SPAN (m) MAXIMUM SPAN (m)
with no extra reinforcements with a bar in the trough**
Deck Thickness (mm) Deck Thickness (mm)
Props Span Fire Slab FibreFlor 0.9 1.2 0.9 1.2
Rating Depth Total Applied Load (kN/m2)
(mm) 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0
1 hr140 26 4.2 3.8 3.0 4.5 4.3 3.4 4.2 4.212 4.220 4.5 4.512 4.220
Single 170 26 4.0 4.0 3.4 4.2 4.2 3.8 4.0 4.0 4.012 4.2 4.2 4.216
span deck1.5 hr
150 31 3.4 3.1 2.4 3.8 3.4 2.7 4.112 4.116 4.120 4.416 4.416 4.420
& slab 180 31 3.8 3.5 2.8 4.1 3.8 3.1 3.8 3.912 3.916 4.1 4.216 4.216
2 hr160 36 3.4 3.1 2.5 3.8 3.5 2.8 4.016 4.116 4.120 4.316 4.320 4.325
190 36 3.8 3.5 2.8 4.1 3.8 3.1 3.8 3.816 3.820 4.1 4.116 4.120
1 hr140 26 4.4 4.2 3.2 5.1 4.7 3.7 4.4 4.412 4.220 5.1 5.216 4.320
Double 170 26 3.9 3.9 3.6 4.8 4.8 4.1 3.9 3.9 3.916 4.8 4.8 4.816
span deck 1.5 hr 150 31 3.7 3.3 2.6 4.1 3.7 2.9 4.212 4.216 4.220 5.016 5.016 4.520
& slab 180 31 3.8 3.7 3.0 4.5 4.1 3.3 3.8 3.7 3.816 4.716 4.716 4.720
2 hr160 36 3.8 3.4 2.7 4.2 3.7 3.0 4.116 4.116 4.120 4.820 4.820 4825
190 36 3.7 3.7 3.0 4.6 4.1 3.3 3.7 3.7 3.720 4.6 4.720 4.725
1 hr140 26 4.7 4.2 3.2 5.1 4.7 3.7 5.316 4.916 4.116 5.416 5.116 4.216
170 26 5.1 4.6 3.6 5.7 5.1 4.1 6.220 5.820 5.020 6.320 6.020 5.120
Double1.5 hr
150 31 3.7 3.3 2.6 4.1 3.7 2.9 5.316 5.320 4.625 5.820 5.420 4.725
span slab 180 31 4.1 3.7 3.0 4.5 4.1 3.3 6.320 6.120 5.425 6.520 6.220 5.525
2 hr160 36 3.8 3.4 2.7 4.2 3.7 3.0 5.520 5.825 4.825 5.520 5.925 5.225
190 36 4.2 3.8 3.0 4.6 4.1 3.3 6.125 6.125 6.032 6.925 6.525 6.032
XXSS The superscript is the diameter of bar required. One bar per deck trough - cover 25mm.
** Where is shown no bar is required, in these cases extra reinforcement does not increase the span.
FibreFlor dosage
26 Steel fibres 25kg/m
3
, Polypropylene fibres 0.9kg/m
3
31 Steel fibres 30kg/m3, Polypropylene fibres 0.9kg/m3
36 Steel fibres 35kg/m3, Polypropylene fibres 0.9kg/m3
No
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Composite Floor Decks 21
ComFlor 80
ComFlor 80 Using Mesh - quick reference tables
ComFlor 80 with mesh - Span table - normal weight concrete
MAXIMUM SPAN (m)
with no extra reinforcements
Deck Thickness (mm)
Props Span Fire Slab Mesh 0.9 1.2
Rating Depth Total Applied Load (kN/m2)
(mm) 3.5 5.0 10.0 3.5 5.0 10.0
1 hr140 A252 4.2 3.6 2.5 4.5 3.8 2.7
Single 170 A252 4.0 4.0 2.8 4.2 4.2 3.0
span slab1.5 hr
150 A393 4.1 3.6 2.5 4.4 3.7 2.6
& deck 180 A393 3.9 3.9 2.7 4.2 4.2 2.9
2 hr160 A393 4.0 3.1 2.3 3.8 3.1 2.3
190 A393 3.8 3.6 2.4 4.1 3.5 2.5
1 hr140 A252 4.4 4.4 3.2 5.2 4.6 3.4
Double 170 A252 3.9 3.9 3.6 4.8 4.8 3.8
span slab 1.5 hr 150 A393 4.2 4.0 3.0 4.8 4.1 3.1& deck 180 A393 3.8 3.8 3.5 4.7 4.7 3.6
2 hr160 A393 4.1 3.6 2.7 4.2 3.6 2.8
190 A393 3.7 3.7 3.1 4.7 4.2 3.2
1 hr140 A393 4.8 4.3 3.2 5.0 4.5 3.5
170 A393 5.3 4.8 3.8 5.6 5.0 4.0
Double1.5 hr
150 A393 4.1 3.7 2.9 4.3 3.9 3.0
span slab 180 A393 4.6 4.2 3.3 4.8 4.3 3.4
2 hr160 A393 3.7 3.4 2.6 3.8 3.4 2.8
190 A393 4.1 3.8 3.0 4.2 3.9 3.1
No
Temporaryprops
1Lineof
Temporaryprops
Technical Hotline
0845 30 88 330
ComFlor80
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ComFlor 60 and 80
ComFlor 60 and 80For use in car parks
22 Composite Floor Decks
Uniquely for a composite floor profileComFlor 60 and 80 can be manufactured with Colorcoat
pre-finished steel coating to the underside. This is suitable for
situations where a visibly exposed soffit is required, such as in
multi-storey car parks. The ComFlor soffit can be left exposed
or where further protection is required it can form the base
coat for further protective systems.
Performance of ComFlor 60 and 80 Soffit
The ComFlor soffit is manufactured using Colorcoat
Exterior Flexible Polyester pre-finished steel. The product
has good formability and durability in exterior application.
It has a Galvatite substrate to BS EN 10326 with a zinc
metallic coating offering good corrosion resistance.
An overall prediction of soffit performance in a
semi-external environment is not possible due to the
variation in conditions that inevitably apply to different
applications.
The 25 micron polyester coating on its own will be
satisfactory in a dry and unpolluted environment (such as
would be expected on most car park soffits) and will only
require regular inspection or assessment after a period of
ten years.
For more challenging applications, an over-paint system
with a suitable performance specification could be applied
post construction. For further advice on sustainability
and suitable paint systems contact Corus technical hotline
on 0845 30 88 330.
Typical Properties Test Specification Test Values
1. Nominal coating thickness ECCA T1 25 microns
2. Gloss (600) ECCA T2 25-45%
3. Pencil hardness ECCA T4 2H
4. Flexibility
Reverse Impact ECCA T5 16JMinimum Bend ECCA T7 4T diameter, 2T radius
5. Adhesion
Cross Hatch BS 3900/E2 100%
6. Corrosion resistance
Salt Spray ECCA T8 Galvatite 500 hrsHumidity BS 3900/F2 Galvatite 1000 hrs
UV resistance (QUV-A) ECCA T10 Very good
7. Abrasion resistance (Taber) *1 ASTM D4060
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Composite Floor Decks 23
ComFlor 60 and 80
Use of (pre-finished) steel decking withcomposite beams
Through deck welded shear studs cannot be used with
pre-finished deck, however various alternative options
are available.
1. Use shear connectors that are attached to the beams
without the need for welding. A number of connectors
that use shot-fired pins are available.
2. Weld the studs to the beams in the fabrication shop, prior
to applying the corrosion protection. With this solution
the decking is laid in single span lengths and butted upto the studs.
3. Use non-composite beams.
4. Use a combination of non-composite secondary beams
and composite primary beams. The decking can then be
laid in continuous lengths across the secondary beams,
which are normal to the span of the primary beams.
Application example:
ComFlor
in Car ParksCorus ComFlor composite floor decking offers the same
benefits to car parks as to other steel framed buildings.
Primarily these are speed of erection and reduced carriage
requirements. Furthermore the reduced structure weight,
height, and the provision of a working platform during
construction can be very significant advantages.
Durability of metal decking in car parks
Galvatite is the standard protective coating for composite
steel decking, giving a sufficient level of corrosion
protection to the upper surface of the decking, provided
adequate provision has been made to prevent the ingress
of water (using reinforcement to control cracking, and
waterproofing to the top surface of the concrete). The top
deck of the car park should be waterproofed with a
traditional bituminous membrane or liquid applied seamlesscoating. It is also good practice to treat other floors to
prevent ingress of water from above. Adequate falls and
drainage should be provided, to prevent the build up of
water on the slabs.
The underside of the decking may additionally be
pre-finished (such as ComFlor with Colorcoat Exterior
Flexible Polyester) or by using epoxy paint applied in situ,
in order to provide a contemporary appeal or additional
protection. Corus will provide advice on durability or future
maintenance depending on the preferred post-finish.
Car park roof
Car parks, but more importantly their users, will benefit from
protection against the external climate.
There is a growing trend to use a lightweight roof over the
top parking deck. This gives added protection to the top
floor of the car park allowing users to park in all weathers.
The aesthetic appeal of a car park can be significantly
enhanced by this method enabling the car park to blend in
with the urban environment. The long-term benefits of
reduced maintenance can far outweigh the initial cost ofthis approach. The car parks at Aylesbury and Guildford
typify this method of construction.
Corus publication Steel-framed car parks
The comprehensive Corus brochure Steel-framed car
parks, is available free from Corus Construction &
Industrial tel: 01724 405 060.
This publication covers all aspects of steel-framed car park
design including outline, circulation, structural form, fire
resistance, durability, aesthetics and commercial viability.
ComFlor 60 and 80 Use in Car Parks
Technical Hotline
0845 30 88 330
ComFlor80
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ComFlor 100
No temporary propsComFlor 100 can carry wet
concrete and construction loads to
4.5m without temporary propping,
(depending on slab depth) thereby
leaving a clear area beneath the
floor under construction. Further
savings of labour and prop hire are
also realised.
Large concrete volume reductionAlthough a deep slab is required,
the ComFlor 100 profile greatly
reduces the volume of concrete
needed and thus the cost and
weight of concrete.
Suitable for traditionalconstruction
ComFlor 100 is suitable to be
placed onto masonry walls or
standard design non-composite
steel beams.
ComFlor 100Shallow composite profile
24 Composite Floor Decks
ComFlor 100 has a very strong profile shape and offers
the capability to span up to 4.5 metres without props.
Designed particularly for Continental European
application, the ComFlor 100 also brings considerable
benefits to the British designer looking for longer
unpropped spans. The profile is not suitable for use with
shear stud connectors.
Project: Meppel Car Park, Holland
Main Contractor: Aannemingsbedrijf Rottinghuis BV
Installer: Bijbouw BV
Photo courtesy of Dutch Engineering
Project: Piazza Mall, Eindhoven, Holland.
Main Contractor: BC Hurks-Van Schijndel
Installer: Nedicom Dak-en Geveltechniek BV
Photo courtesy of Dutch Engineering
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Composite Floor Decks 25
ComFlor 100
ComFlor 100 Design Information
Volume & weight table notes
1. Deck and beam deflection (i.e. ponding)
is not allowed for in the table.
2. Deck and mesh weight is not included
in the weight of concrete figures.
3. Density of concrete is taken as:
Normal weight (wet) 2400 kg/m3
Normal weight (dry) 2350 kg/m3
Lightweight (wet) 1900 kg/m3
Lightweight (dry) 1800 kg/m3
Design Notes
Deck material
Corus Galvatite, hot dip zinc coated steel EN
10326-S280GD+Z275. Guaranteed minimum
yield stress 280N/mm2. Minimum zinc coating
mass 275g/m2
total both sides.
Quick reference tables
The quick reference load/span and fire design
tables, on the following 2 pages are intended as
a guide for initial design, based on the
parameters stated below the tables. Full design
can be carried out using the free Comdek
software available. Please refer to page 70 for
help on using the software.
Anti-crack mesh
BS 5950: Part 4 currently recommends that
anti-crack mesh should comprise 0.1% of slab
area. The Eurocode 4 recommendation is that
anti-crack mesh should comprise 0.2% of slab
area for unpropped spans and 0.4% of slab area
for propped spans. The mesh shown in the quick
reference tables complies with EC4 and the
design program defaults to these values. Where
EC4 mesh rules are used, the mesh may be
reduced midspan - see Design Information on
page 32. The reduced British Standard mesh
values may still be used by overriding this default
in the design program.
Where forklift truck (or other similar concentrated
loading) is expected 0.5% minimum percentage
reinforcement should be used over the supports
and 2% elsewhere to control cracking. For
further information refer to Design Notes on
page 32 or SCI AD150.
Mesh top cover must be a minimum of 15mm,
and a maximum of 30mm. Mesh laps are to be
300mm for A142 mesh and 400mm for A193,
A252 & A393 mesh.
Fire
For details of the performance of composite
slabs comprising ComFlor 100 decking under
a fire condition with nominal anti-crack mesh,
please refer to the quick reference fire load tables
in this brochure. For other simplified design
cases or for full fire engineering, refer to the
Comdek software.
Technical services
The Technical Department at Corus offers a
comprehensive advisory service on design of
composite flooring, which is available to all
specifiers and users. Should queries arise which
are not covered by this literature or by the
Comdek software, please contact us.
ComFlor 100 Composite Slab - volume & weight
Weight of Concrete (kN/m2)Concrete
Slab Depth volume Normal weight Concrete Lightweight Concrete(mm) (m3/m2) Wet Dry Wet Dry
160 0.100 2.36 2.31 1.87 1.77
170 0.110 2.59 2.54 2.05 1.94
180 0.120 2.83 2.77 2.24 2.12
190 0.130 3.06 3.00 2.43 2.30
195 0.135 3.18 3.12 2.52 2.39
200 0.140 3.30 3.23 2.61 2.47
210 0.150 3.53 3.46 2.80 2.65
220 0.160 3.77 3.69 2.98 2.83
230 0.170 4.01 3.92 3.17 3.00
250 0.190 4.48 4.38 3.54 3.36
Section Properties (per metre width)
Nominal Design Height to Moment of Ultimate Moment capacity thickness thickness Profile weight Area of steel neutral axis inertia (kNm/m)
(mm) (mm) (kN/m2) (mm2/m) (mm) (cm4/m) Sagging Hogging
1.00 0.96 0.14 1687 58.00 257.0 11.84 14.96
1.10 1.06 0.15 1855 58.00 278.0 12.08 16.80
1.20 1.16 0.16 2022 58.00 298.0 12.40 18.64
Technical Hotline
0845 30 88 330
Com
Flor
100
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ComFlor 100
26 Composite Floor Decks
ComFlor 100 Using Mesh - quick reference tables
ComFlor 100 Span table - normal weight concrete
MAXIMUM SPAN (m)
Deck Thickness
Props Span Fire Slab Mesh Bar 1.0 1.1 1.2Rating Depth Reinforcement Total Applied Load (kN/m2)
(mm) 12mm 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0
1 hr 170 A252 None 3.9 3.5 2.8 4.0 3.6 2.8 4.0 3.7 2.9Single
1.5 hr 180 A393 None 3.8 3.5 2.8 3.9 3.6 2.8 3.9 3.6 2.9span slab
2 hr195 A393 None 3.6 3.2 2.6 3.6 3.3 2.6 3.6 3.3 2.6
& deck250 A393 None 3.3 3.2 2.6 3.3 3.2 2.6 3.3 3.2 2.6
1 hr 170 A142 None 4.3 3.9 3.1 4.4 4.0 3.1 4.5 4.1 3.2Double
1.5 hr 180 A252 None 4.3 3.8 3.0 4.3 3.9 3.9 4.4 4.0 3.1span slab
2 hr195 A393 None 4.2 3.8 3.1 4.2 3.9 3.1 4.3 3.9 3.1
& deck250 A393 None 3.5 3.5 3.4 3.8 3.8 3.5 3.8 3.8 3.5
1 hr170 A393 One per trough 5.9 5.3 4.2 5.9 5.3 4.2 5.9 5.3 4.2
250 2xA393 One per trough 5.8 5.8 4.9 6.3 6.0 4.9 6.5 6.0 4.9Single
1.5 hr180 A393 One per trough 4.8 4.4 3.4 4.8 4.3 3.4 4.8 4.3 3.4
span slab250 2xA393 One per trough 3.5 4.8 3.9 5.2 4.8 3.9 5.2 4.8 3.9
& deck
2 hr195 A393 One per trough 4.0 3.7 2.9 4.0 3.6 2.9 4.0 3.6 2.9
250 2xA393 One per trough 4.3 3.9 3.2 4.3 3.9 3.2 4.3 3.9 3.2
1 hr170 A393 One per trough 5.9 5.0 4.2 5.9 5.3 4.2 5.9 5.3 4.2
250 2xA393 One per trough 5.9 5.9 4.9 6.5 6.0 4.9 6.5 6.0 4.9Single
1.5 hr180 A393 One per trough 4.8 4.4 3.4 4.8 4.3 3.4 4.8 4.3 3.4
span slab250 2xA393 One per trough 5.2 4.8 3.9 5.2 4.8 3.9 5.2 4.8 3.9
& deck
2 hr195 A393 One per trough 4.0 3.7 2.9 4.0 3.6 2.9 4.0 3.6 2.9
250 2xA393 One per trough 4.3 3.9 3.2 4.3 3.9 3.2 4.3 3.9 3.2
No
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1Lineo
fTemporaryprops
Project: Da Vinci Zwolle offices, Holland
Main Contractor: Veluwse Bouwondermeming BV
Installer: Welmecon BVPhoto courtesy of Dutch Engineering
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Composite Floor Decks 27
ComFlor 100
ComFlor 100 Using Mesh - quick reference tables
Parameters assumed for quick reference span tables
Mesh See notes on previous page.
Spans Measured centre to centre of supports.
Deck Standard deck material specification (see previous
page).
Bearing width The width of the support is assumed to be 150mm.
Prop width Assumed to be 100mm.
Deflection Construction stage L/130 or 30mm
(ponding has been taken into account).Deflection Composite stage L/350.
Concrete grade The concrete is assumed to be grade 35 with a
maximum aggregate size of 20mm. The wet weight of
concrete is taken to be normal weight 2400kg/m3
and
lightweight 1900 kg/m3. The modular ratio is 10 for
normal weight and 15 for lightweight concrete.
Construction load 1.5 kN/m2 construction load is taken into account,in
accordance with BS 5950:Part 4. No allowance is
made for heaping of concrete during the casting
operation. See design notes.
Applied load The applied load stated in the tables is to cover
imposed live load, partition loads, finishes, ceilings and
services. However the dead load of the slab itself has
already been taken into account and need not be
considered as part of the applied load.
Simplified fire The fire recommendations in the tables are based on
design method the simplified design method.
Fire engineering The fire engineering (FE) method may be used to
method calculate the additional reinforcement needed for fire,load and span conditions beyond the scope of these
tables. The FE method of design is provided in the
design CD.
Fire insulation The minimum slab thickness indicated in each table,
for each fire rating satisfies the fire insulation
requirements of BS 5950: Part 8.
Span/depth ratio Slab span to depth ratio is limited to 30 for lightweight
concrete and 35 for normal weight concrete.
ComFlor 100 Span table - lightweight concrete
MAXIMUM SPAN (m)
Deck Thickness
Props Span Fire Slab Mesh Bar 1.0 1.1 1.2Rating Depth Reinforcement Total Applied Load (kN/m2)
(mm) 12mm 3.5 5.0 10.0 3.5 5.0 10.0 3.5 5.0 10.0
1 hr 160 A252 None 4.1 3.6 2.8 4.2 3.7 2.9 4.3 3.8 2.9Single
1.5 hr 170 A252 None 3.7 3.3 2.5 3.7 3.3 2.6 3.8 3.4 2.6span slab
2 hr180 A393 None 3.8 3.4 2.7 3.9 3.5 2.7 3.9 3.5 2.7
& deck250 A393 None 3.6 3.4 2.7 3.6 3.4 2.7 3.6 3.4 2.7
1 hr 160 A142 None 4.5 4.1 3.1 4.6 4.1 3.1 4.7 4.2 3.2Double
1.5 hr 170 A142 None 4.1 3.7 2.8 4.2 3.7 2.9 4.3 3.8 2.9span slab
2 hr180 A393 None 4.7 4.7 3.6 4.7 4.7 3.6 4.8 4.7 3.6
& deck250 A393 None 3.9 3.9 3.9 4.1 4.1 4.1 4.1 4.1 4.1
1 hr160 A252 One per trough 5.6 5.1 4.1 5.6 5.2 4.1 5.7 5.2 4.1
250 2xA393 One per trough 6.7 6.6 5.2 7.1 6.6 5.2 7.2 6.5 5.2Single
1.5 hr170 A393 One per trough 5.7 5.2 4.0 5.8 5.2 4.0 5.8 5.2 4.0
span slab250 2xA393 One per trough 6.5 5.9 4.7 6.5 5.9 4.7 6.5 5.9 4.7
& deck
2 hr180 A393 One per trough 5.2 4.6 3.6 5.2 4.6 3.6 5.2 4.6 3.6
250 2xA393 One per trough 5.7 5.2 4.1 5.7 5.2 4.1 5.7 5.2 4.1
1 hr160 A252 One per trough 5.5 5.1 4.1 5.5 5.1 4.1 5.6 5.2 4.1
250 2xA393 One per trough 6.7 6.6 5.2 7.1 6.6 5.2 7.2 6.5 5.2Single
1.5 hr170 A393 One per trough 5.6 5.2 4.0 5.8 5.2 4.0 5.8 5.2 4.0
span slab250 2xA393 One per trough 6.5 5.9 4.7 6.5 5.9 4.7 6.5 5.9 4.7
& deck
2 hr180 A393 One per trough 5.2 4.6 3.6 5.2 4.6 3.6 5.2 4.6 3.6
250 2xA393 One per trough 5.7 5.2 4.1 5.7 5.2 4.1 5.7 5.2 4.1
No
Temporaryprops
1Lineo
fTemporaryprops
Technical Hotline
0845 30 88 330
Com
Flor
100
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In recognition of the many practicaldifficulties associated with the use of
traditional welded wire fabric in upper
floor construction and in response to
the ever increasing demands for
improved speed of construction,
improved quality and cost
effectiveness, Corus and Propex
Concrete Systems have joined forces
to develop FibreFlor.
FibreFlor is a combination of Novocon
high performance steel fibres and
Fibermesh micro-synthetic fibres
providing a unique three dimensional
concrete reinforcement solution for
composite metal decks and designed
to replace traditional welded wire
mesh.
By combining the attributes of both
types of fibre, FibreFlor provides
performance benefits over the entire
life span of the concrete from
simplifying placement, to minimising
cracks in the plastic state, to
controlling cracks in the hardenedstate, to providing years of
exceptional durability.
In the development of FibreFlor, it was
identified that many properties were
required to provide both an optimum
technical solution for the necessary
fire rating, but also practically in
providing a concrete solution that is
easily handled, pumped and finished.
The world leading brand of Fibermeshmicro-synthetic fibres are proven to
inhibit both plastic shrinkage and
settlement cracking. Additional
benefits include increased impact and
abrasion resistance together with
reduced permeability of the concrete.
Fibermesh micro-synthetic fibres are
also internationally proven to provide
resistance to explosive spalling, in the
event of fire.
Novocon high performance steel
fibres are proven to provide both a
high level of ductility to the concrete
and long term crack control. Thisallows the load carrying capability to
replace traditional mesh
reinforcement. Testing approved by
the Steel Construction Institute
confirmed that FibreFlor also provided
longitudinal shear resistance in excess
of that provided by A393 steel wire
fabric.
FibreFlor reinforced composite metal
deck systems have been extensively
tested in accordance with BS EN
1365-2:2000 standards at NAMAS
certified fire test facilities, under the
guidance of the Steel Construction
Institute (SCI).
Results, analysed and approved by
the SCI, show that FibreFlor
reinforced composite metal deck
systems provide equivalent or
superior performance to traditional
wire mesh solutions with fire ratings of
up to two hours.
FibreFlorIntroduction
In recognition of the many practicaldifficulties associated with the use of
traditional welded wire fabric in upper
floor construction and in response to
the ever increasing demands for
improved speed of construction,
improved quality and cost
effectiveness, Corus and Propex
Concrete Systems have joined forces
to develop FibreFlor.
FibreFlor is a combination of Novocon
high performance steel fibres and
Fibermesh micro-synthetic fibres
providing a unique three dimensional
concrete reinforcement solution for
composite metal decks and designed
to replace traditional welded wire
mesh.
By combining the attributes of both
types of fibre, FibreFlor provides
performance benefits over the entire
life span of the concrete from
simplifying placement, to minimising
cracks in the plastic state, to
controlling cracks in the hardenedstate, to providing years of
exceptional durability.
In the development of FibreFlor, it was
identified that many properties were
required to provide both an optimum
technical solution for the necessary
fire rating, but also practically in
providing a concrete solution that is
easily handled, pumped and finished.
The world leading brand of Fibermeshmicro-synthetic fibres are proven to
inhibit both plastic shrinkage and
settlement cracking. Additional
benefits include increased impact and
abrasion resistance together with
reduced permeability of the concrete.
Fibermesh micro-synthetic fibres are
also internationally proven to provide
resistance to explosive spalling, in the
event of fire.
Novocon high performance steel
fibres are proven to provide both a
high level of ductility to the concrete
and long term crack control. Thisallows the load carrying capability to
replace traditional mesh
reinforcement. Testing approved by
the Steel Construction Institute
confirmed that FibreFlor also provided
longitudinal shear resistance in excess
of that provided by A393 steel wire
fabric.
FibreFlor reinforced composite metal
deck systems have been extensively
tested in accordance with BS EN
1365-2:2000 standards at NAMAS
certified fire test facilities, under the
guidance of the Steel Construction
Institute (SCI).
Results, analysed and approved by
the SCI, show that FibreFlor
reinforced composite metal deck
systems provide equivalent or
superior performance to traditional
wire mesh solutions with fire ratings of
up to two hours.
28 Composite Floor Decks
FibreFlor
Above:
Independent testing of
ComFlor 60 composite
floordeck at the Namascertified fire test facility
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FibreFlor Mesh Free Composite Floor SystemPartner
Composite Floor Decks 29
FibreFlor
Propex Concrete Systems (Formerly
SI Concrete Systems) are global
leaders in supplying fibres for
secondary concrete reinforcement to
the construction market.
With over two decades of innovating
and perfecting fibre reinforcement
solutions, Propex offers performance
benefits over the entire life span ofconcrete - from simplifying placement
to minimising cracks in the plastic
state to controlling cracks in the
hardened state to providing years of
exceptional durability and fire resistant
benefits.
An international staff of fibre
reinforced concrete specialists have
expanded their quest to solve
concrete constructions greatest
challenges in virtually every
application imaginable: slab-on-
ground, elevated slab, poured-in-
place walls, sprayed concrete, precast
and many more. The resulting
solutions have spawned a continually
growing list of pioneering firsts,
including fibrillated, monofilament and
macro-synthetic fibres as well as
engineered fibre combinations for
multifaceted applications.
A long-standing philosophy of
solutions-orientated innovations
ensures the delivery of the ultimate
combination of world-class concrete
reinforcement products and
world-class concrete specialists.
Technical Hotline
0845 30 88 330
Fibre
Flor
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30 Composite Floor Decks
Installation
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Composite Floor Decks 31
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32 Composite Floor Decks
Design Information
Shallow Composite Floor DecksDesign Information
Design Parameters Fire rating dictates minimum
slab depth.
Concrete type also dictates
minimum slab depth
and influences
unpropped
deck span.
Deck span (unpropped) usually
dictates generalbeam spacing.
Slab span (propped deck)
dictates maximum
beam spacing.
Two Stage Design
All Composite Floors must be considered in
two stages.
Wet Concrete and construction load
carried by deck alone.
Cured concrete
carried by composite slab.
General design aims
Generally designers prefer to reduce therequirement to provide temporary propping
and so the span and slab depth required
governs the deck selection. Fire
requirements usually dictate slab depth. For
most applications, the imposed load on the
slab will not limit the design.
Quick Reference and full design.
The combination of this manual and
Comdek software makes both quick
reference and full design easy. Indicative
design may be carried out from the printed
tables, however the software greatly
increases the scope available to the design
engineer and allows the engineer to print afull set of calculations which can be used for
submission to a Local Authority.
Anti-crack mesh
FibreFlor can be used to replace anti crack
mesh. Where mesh is used, BS 5950 : Part
4 recommends that it comprises 0.1% of
slab area. The Eurocode 4 recommendation
is that anti-crack mesh should comprise
0.2% of slab area for unpropped spans and
0.4% of slab area for propped spans. The
mesh shown in the quick reference tables
complies with EC4 and the design program
defaults to these values. The reduced BS
mesh values may still be used by overridingthis default in the design program.
In slabs subject to line loads, the mesh
should comprise 0.4% of the cross-sectional
area of the concrete topping, propped and
unpropped.
These limits ensure adequate crack control
in visually exposed applications (0.5 mm
maximum crack width). The mesh
reinforcement should be positioned at a
maximum of 30 mm from the top surface.
Elsewhere, 0.1% reinforcement may be used
to distribute local loads on the slab (or 0.2%
to EC4).
Mesh laps are to be 300mm for A142 mesh
and 400mm for A193, A252 & A393.
Forklift trucks
Where forklift truck (or other similar)
concentrated loading) is expected 0.5%
minimum percentage reinforcement should
be used over the supports and 0.2%
elsewhere to control cracking. For further
information refer to SCI AD150.
Exposed floors
Composite floors are usually covered by
finishes, flooring or a computer floor; andbecause cracking is not visible, light top
reinforcement is adequate, typically 0.1% of
the gross cross sectional area. However
where the composite slab is to be left
uncovered, e.g. for power trowelled floor
finishes, cracking, particularly over the
beams, may not be adequately controlled by
the light mesh usually provided. The
cracking has no structural significance, but
the appearance of it, and the possibility of
the crack edge breakdown under traffic, may
be perceived as problems. In this case, refer
to Concrete Society publication, 'Cracking In
Composite Concrete/Corrugated Metal
Decking Floors Slabs' which provides valid
mesh sizing and detailing for specific crack
width control. Where forklifts are to be used
also refer to Steel Construction Institute
advisory note 'AD 150, Composite Floors -
Wheel Loads From Forklifts'. Both
publications are available from our Technical
Advisory Desk.
Reduced mesh
Where EC4 mesh rules are used, as
recommended by Steel Construction
Institute and Corus, the full stipulated mesh
applies to the slab 1.2m either side of every
support. Outside of this, i.e. in the midspan
area, the mesh area may be halved (to 0.2%
for propped and 0.1% for unpropped
construction), provided there are no
concentrated loads, openings etc. to be
considered. Also the reduced midspan mesh
must be checked for adequacy under fire,
for the rating required.
Bar reinforcement
The axis distance of bar reinforcement defines
the distance from the bottom of the ribs to thecentre of the bar, which has a minimum value
of 25 mm, and a maximum value of the profile
height. Where used, bar reinforcement is
placed at one bar per profile trough.
Transverse reinforcement
Corus composite floor decks contribute to
transverse reinforcement of the composite
beam, provided that the decking is either
continuous across the top flange of the steel
beam or alternatively that it is welded to the
steel beam by stud shear connectors. For
further information refer to BS5950:Part 3:
Section 3.1.Clause 5.6.4.
Concrete choiceLightweight concrete (LWC) uses artificially
produced aggregate such as expanded
pulverised fuel ash pellets. LWC leads to
considerable advantages in improved fire
performance, reduced slab depth, longer
unpropped spans and reduced dead load.
However, LWC is not readily available in
some parts of the country. Normal weight
concrete uses a natural aggregate and is
widely available.
The strength of the concrete must meet the
requirements for strength of the composite slab
and shall not be less than 25N/mm2 for LWC or
30N/mm2 for NWC. Similarly, the maximum
value of concrete strength shallnot be taken as greater than 40 for LWC or
50 for NWC.
Composite floor decking design is generally dictated by the construction stagecondition, the load and span required for service and the fire resistance required for
the slab. The deck design is als