Through The Trapdoor Method · 9 BoSS StairMAX User Guide StairMAX 700/850 Safe Use Check that all...

StairMAX Aluminium Tower

600/700/850 Climbing Rung

3T - Through The Trapdoor Method

User GuideEdition July 2008

TM

BoSS StairMAX User Guide1

StairMAX 600Tower safety

Never overload the tower. The tower’s maximumworking load is 150kg on the platform. Only one person is allowed on the platform, along with tools and materials.

Never lean anything against the tower. Never use if for jobs that excert repetative or excessive force. Lateral force over 198N - equivalent to a 20kg weight - make it unstable even when fitted with stabilisers or balast. This section includes a table (a) to indicate what level of lateral force is exerted by typical jobs. Those jobs likley to exert excessive sideways force should not be carried out on this tower, whilst those likely to excert moderate sideways force should be carried out with due care.

Never use boxes, steps etc to gain extra height.Never reach too far out to one side.

If the tower is to be repositioned on a higher step, DO NOT attempt to move it as a complete assembly. Always dismantle it and rebuild at the new location.

General Safety This tower is intended only for indoor use, and must not be positioned where it could be subjected to wind loads. Ensure that the site or stairwell where it is erected does not induce any funneling or concentrating effect of the wind, or where opening of doors could introduce sudden wind loads.

Ensure that you are not contravening any health and safety law (blocking a fire exit for example) before proceeding to construct the tower on the stairwell.

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StairMAX 600Safety Checklist

Ensure all brace claws operate and lock correctly prior to errection

Inspect components prior to errection

Inspect tower prior to use

Tower upright and level

Castors locked and legs correctly adjusted

Diagonal braces fitted

Stabilisers/outriggers fitted as specified

Platforms located and windlocks on

Toeboards located

Check guardrails are fitted correctly. See illustration below.

Ensure horizontal braces and guardrails are fitted correctly. Always fit as shown.


StairMAX 600Component Checklist

Standard Frame (x4)

Gate Frame (x1)

Platform (x1)

Horizontal Brace (x6)

Diagonal Brace (x2)

Stabiliser (x1)

Adjustable Leg (x4)

Base Plate (x4)

End Toeboard (x2)

Side Toeboard (x2)

Tower Dimensions

Maximum safe working height 3.7m Maximum overall height 3.5mMaximum platform height 2.3m Maximum tower length 1.45mMaximum tower width 0.7mComplete tower weight (no stabiliser) 52kgstabiliser 6kg

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StairMax 600 Assembly Procedure

1 Push base plates onto adjustable leg. Then insert base plate/adjustabile leg assembly into 2

standard frames. Ensure they are equally they are equaly extended so that they stand level. These will now be reffered to as base frames.

2 Fit an aditional frame to one of the base frames and engage the interlock clips. Place the base

frame, fitted with an extra frame, on the lower stair and the singular base frame on the upper stair, allowing the correct distance between the frames for the platform to fit (1.3 metres).



3 Link these two frames with two horizontal and two diagonal braces as shown in the illustration, to

form the tower base - start by clipping the horizontal braces to the frame uprights.

4 Fit the platform to the top rungs of the two end frames. Make sure all four platform end hooks are

in contact with the top rungs, then secure in place by engaging the hook latches (see illustration). Fit a standard frame to the top end of the frame that is at the lower step, secureing it in place with the interlock clips. Fit the gate frame to the top of the frame that is resting on the uper step. Make sure that the access bar is positioned so that it opens in towers the tower.

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5 Now attach the four guard rails (see illustration) ensuring that the claws face outward. To

complete the tower, the toeboards must be fitted on all four sides of the platform.

6 Now refer to the stabilisation guide () and table to use the correct means of stabilising the

tower.

The manufacturer strongly recomends that ballast is used in all applications in addition to any method of stabilisation used. Please contact your supplier ro hire shop for details.

If stabiliser(s) are required, they must be fitted to the corner(s) of the end frame on the lower step, angled at 45 degrees. The clamps should be fitted to the clear sections of the frame uprights, away from the interlock clips and rungs. Once fitted they must have a minimum sideways extension of 650mm and also reach down the stairs for a minimum distance of 650mm. Ensure that the rubber foot is firmly in contact with the ground, and that the stabiliser clamps ae securely tightened.


StairMax 600 Stabilisation guide Refer to the table below for the correct method(s) of stabilising the tower for the stairwell in which you intend to erect it:

Position of tower in Stairwell

Staircase clear Width

0.8 to 1.4m

1.4 to 2.0m

2.0m or greater

Free standing (No walls on either side of staircase) A A A or C

Up against a wall on one side of the staircase A or D A, B or D A, B or D

Mid-way between walls on each side of staircase A or D A or D A or C

For additional stability more than one stabilisation method may be used. The manufacturer strongly recomends that ballast be used in all applications in addition to the alternative methods indicated by this guide.

Methods of stabilisation:A Strongly recomended: The tower is fitted with 150kg of

ballast uniformly spread along the bottom rung of each base frame (i.e. 75kg at each end). Please contact your supplier or hire shop for details.

B The tower is positioned up against a wall on one side, and a stabiliser is fitted on the other, to the end frame

on the lower step. The stabiliser must have a minimum sideways extension of 650mm, and reach down the stairs for a minimum distance of 650mm.

C The tower is fitted with a stabiliser on both sides, each with a minimum sideways extension of 650mm, and

reaching down the stairs for a minimum distance of 650mm. Additional stabiliser available from your supplier or hire shop.

D The tower is fixed solidly to a wall on one side with ties. They should be rigid , two-way ties fastened to both

uprights of the frame with load bearing right angled or swivel couplers. Only couplers suitable for the 50.8mm diameter tube of the tower should be used. Ideally ties should secure to either the face of a solid structure or by means of anchorages. Tying in with rope or non rigid members is not acceptable.

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StairMAX 700/850Mobile Towers - 3t Method

Introduction Please read this guide carefully.Please note that diagrams are for illustrative purposes only. User guides are also available to download from our website at youngmangroup.comBoSS Mobile aluminium towers are light-weight scaffold towers used throughout the building and construction industry for both indoor and outdoor access solutions where a stable and secure platform is required. Ideal for maintenance and installation work or short term access, the highly versatile towers provide a strong working platform for a variety of heights.

This user guide provides you with step by step instructions to ensure your system is erected easily and safely, using the 3T (Through The Trapdoor) method.

The law requires that personnel errecting, dismanatling or altering towers must be competent. Any person erecting a Youngman BoSS mobile tower must have a copy of this guide. For further information on the use of mobile access and working towers consult the PASMA operators code of practise.

If you nead further information, design advice, additional guides or any help with this product, please contact Youngman on +44 (0)162174 5900 or email [email protected]

Compliances The BoSS StairMAX 700/850 aluminium tower system complies with EN1004:2004 Class 3

Instruction manual EN1298-IM-EN

Preparation and inspectionInspect the equipment before use to ensure that it is not damaged and that it functions properly. Damaged or incorect components shall not be used.


StairMAX 700/850Safe Use

Check that all components are on site, undamagedand that they are functioning correctly - (refer to checklist and Quantity Schedules). Damged or incorect components shall not be used.

Check if the ground on which the mobile access tower is to be erected is capable of supporting the tower.

For StairMax 700/850 the safe working load is 275kg (606lb) per platform level.

Towers must always be climbing from the inside using the built in ladder during assembly and use.

It is recomended that towers should be tied to a solid structure when left unatended.

Adjustable legs should only be used for levelling.

Lifting of equipment Tower components should be lifted using a reliable lifting material (e.g. strong rope), employing a reliable knot (e.g. clove hitch), to ensure safe fastening and always lift within the footprint of the tower.

Assembled mobile tower should not be lifted with a crane or other lifting device.

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StairMAX 700/850Stabilisers/Ballast

Stabiliers or outriggers and ballast weights shall always be fitted when specified.

The Quantity Schedules show the recomended stabilisation. In circumstances where there is restricted ground clearnce for stabilisers/outriggers, contact your supplier for advice. Ballast must be of solid materials (ie. not water or loose sand) and should not be positioned to overload individual legs. Ballast should be secured against accidental removal where practicable, and should be supported on the lowest rung of the bottom frame.

Movement The StairMAX tower system MUST NOT be moved once erected. Always dismantle it and rebuild at the new location.


StairMAX 700/850During Use

Beware of high winds in exposed, gusty or medium breeze conditions. We recomend that in wind speeds over 7.7 metres per second (17 mph), cease working on the tower and do not attempt to move it. If the wind becomes a strong breaze expected to reach 11.3 metres per second (25mph), tie the tower to a rigid structure. If the wind is likley to reach gale force, over 18 metres per second (40mph), the tower should be dismantled.

Wind Description

Beaufort Scale

Beaufort No.

Speed in m.p.h.

Speed inm/sec.

Medium Breeze

Raises dust and loose paper, twigs snap off.

4 8-12 4-6

Strong Breeze

Large branches in motion, telegraph wires whistle.

6 25-31 11-14

Gale Force Walking is difficult. 8 39-46 17-21

Beware of open ended buildings, which can cause funneling effect.

Do not abuse equipment. Damaged or incorect components shall not be used.

Raising and lowering components, tools and or materials by rope should be conducted within the lower base. Ensure that the safe working load of the suporting decks and the tower structure is not exceeded.

The assembled tower is a working platform and should not be used as a means of access or egress to other structures.

Beware of horizontal forces (e.g. power tools) which could generate instability. Maximum horizontal force 20 kg.

Mobile towers are not designed to be suspended - please refer to your supplier for advice.

Do not use boxes or stepladders or other objects on the platform to gain extra height.


StairMAX 700/850

Ties

Ties should be used when the correct Stabilisation/Ballast cannot be achieved, or if there is a danger of instability. They should be rigid, two way ties fastened to both uprights of the frame with load bearing right angled or swivel couplers. Only couplers suitable for the 50.8mm diameter tube of the tower should be used. Ideally, ties should be secured to both faces of a solid structure by means of anchorages.

The tie frequency may vary depending on the application, but they should, at a minimum, be every 4 metres height.

For further information on tying-in a tower please contact your supplier or Youngman.

Maintenance - Storage - Transport All components and their parts should be regularly inspected to identify damage, particularly to joints. Lost or broken parts should be replaced, and any tubing with indentation greater than 5mm should not be used and put to one side for manufacture repair. Adjustable leg threads should be cleaned and lightly lubricated to keep them free running.

Brace claws, frame interlock clips, trapdoor latches and platform windlocks should be regularly checked to ensure they lock correctly.

Refer to the BoSS Inspection Manual for detailed inspection and maintenance advice.

Components should be stored with dure care to prevent damage.

Ensure compenents are not damaged by excessive strapping forces when transported.


Quantity Schedule StairMAX 700mm wide x 1.3m & 1.8m 3T build

Component Working height (m) 5.4 6.4Platform height (m) 3.4 4.4

Base Plate 4 4

Adjusable Leg 4 4

8 Rung Walk Through End Frame 2 2

4 Rung Guardrail Frame (1.0m high x 0.85m wide)

1 1

7 Rung Span Frame (1.75m high x 0.85 wide)

2 3

Trap Door Deck 2* 2

Horizontal Brace 5 9

Diagonal Brace 5 6

Side Toeboard 2 2

End Toeboard 2 2

SP7 Stabiliser 2 2

SP10 Stabiliser 2 2

Total Self weight of tower (kg) - 1.3m 111 136


* An additional temporary deck is required as part of the assembly procedure.


Quantity Schedule StairMAX 850mm wide x 1.3m & 1.8m 3T BuildComponent Working height (m) 4.9 5.9

Platform height (m) 2.9 3.9Base Plate 4 4

Adjusable Leg 4 4

8 Rung Walk Through End Frame 2 2

4 Rung Guardrail frame (1.0m high x 0.85m wide)

1 1

7 Rung Span Frame (2.0m high x 0.85 wide)

1 2

Trap Door Deck 2* 2

Horizontal Brace 5 9

Diagonal Brace 6 8

Side Toeboard 2 2

End Toeboard 2 2

Toeboard Holder 4 4

SP7 Stabiliser 2 2

SP10 Stabiliser 2 2



* An additional temporary deck is required as part of the assembly procedure.


StairMAX 700/850Assembly Procedure The procedure illustrated shows a 700 wide tower with a platform height of 3.4m.Youngman recommend two persons are used to build StairMAX tower and that base plates are used instead of castors.

1 Push 4 base plates onto adjustable legs.

Insert adjustable leg assemblies into Walk through base frame, as shown. Repeat for second Walk through base frame

2 Fit a lift frame (1.75m for 700 wide/2.0m for 850 wide) onto the Walk through base frame ensuring

the frame interlock clips are engaged.Place the two frames onto the stair. This will become the lower end of the tower.


StairMAX 700/850Assembly Procedure

3 Fit one horizontal brace (red) onto the vertical of the end frame, on the climbing side, above the

5th rung of the portal frame with the claw facing outwards. The frame will now be self supporting. Note: All locking claws must be open before fitting.

4 Position the second portal frame as

shown, with the openings on the same side, and fit the other end of the horizontal brace just above the bottom rung.



5 Fit a pair of diagonal braces between the bottom rungs of the portal frames, one on each side of

the tower. Fit a diagonal brace between the 2nd rung of the higher end frame and the 10th rung of the lower end frame. Ensure the frames are vertical and level by checking with a spirit level and setting the adjustable legs accordingly.

6 Fit a diagonal brace between the 7th rung of the lower frame and the 7th rung of the higher frame.

Fit a lift frame (1.75m for 700 wide/2.0m for 850 wide) onto the Walk though base frame at the higher end, by standing higher up the stairs.



7 Fit stabilisers (see notes on page 22). The upper clamp of the stabiliser must be at least 1.5m above

the bottom of the end frame.Where possible, the Stabilisers

must also have a minimum outstand of 1.2m.

8 Fit a temporary trapdoor deck on the 7th rung of the upper frame, as shown. Climb up the inside

of the tower and from the protected position of the trapdoor, fit a pair of horizontal braces as guardrails on both sides, to the 9th rungs counting at the higher end.

1.5m Minimum.

1.2m Minimum.



9 From the protected position of the trapdoor, place a trapdoor deck on

the 11th rung, counting at the higher end.

10 Stand on the temporary deck and, by using

the trapdoor of the higher deck as a guardrail, fit the 4 rung frame to the lower end of the tower, Fit a diagonal brace on one side of the tower, between the 8th rung of the higher end and the 16th rung of the lower end.



11 Climb up the inside of the tower and

from the protected position of the trapdoor, fit horizontal braces as guardrails, on both sides.

2 The temporary deck can now be removed.If building to the next height, the 4 rung frame at

the lower end should be replaced with a lift frame (1.75m for 700/2.0m for 850).

The 4 rung frame should then be positioned at the higher end of te tower. Diagonal braces, decks and guard rails should be added as shown in previous steps. Fit guardrail braces from the protected trapdoor position. Do not climb onto the platform until it is fully guardrailed.

Fit toe boards (instructions on page 21)The tower is now complete.

21

Toeboards 700 StairMax

Unfold the toeboard set and place it as shown. Ensure that it sits around the edge of the deck, on all sides.

850 StairMax

Lock yellow plastic toeboard clips over rung and deck claw as shown. Position as (A) on right hand deck claw. On other side of the working plaform, position the clip as (B). Place 25mm thick toeboards into slots in toeboard clips as shown.

BoSS StairMAX User Guide


StabilisersStairMax 600

StairMAX 700/850

1.5m Min

1.2m Min1.2mMin

MinMin

For further information aboutthis product or any otherproducts and services,please contact :

Youngman Group LtdThe Causeway, Maldon,Essex, CM9 4LJ,United Kingdom

t +44 (0)1621 745900f +44 (0)1621 859845e [email protected]

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Through The Trapdoor Method · 9 BoSS StairMAX User Guide StairMAX 700/850 Safe Use Check that all...

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