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MOBILE ACCESS TOWER SHALLOW BRACE

INSTRUCTION MANUAL

Issued January 2008

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INTRODUCTION

This instruction manual contains all the information required to correctly assemble the OCTO 250 shallow brace mobile access tower incorporating the two PASMA (Prefabricated Access Suppliers’ and Manufacturers Association) approved methods of assembly as endorsed by the Health and Safety Executive. The primary method of safe assembly is the incorporation of Advance Guardrail protection (PlusGard™) to provide collective measures enabling full compliance with the Work at Height Regulations 2005. The provision and utilisation of Advance guardrail protection is recommended for all operatives erecting OCTO 250 Mobile Access Towers. This Manual should be used in conjunction with a suitable Risk Assessment and Method Statement (by user) relative to the project to be undertaken, Work at Height Regulations 2005, Regulation 6(1). It must be noted that all employers have a responsibility to ensure that work methods (practices) and adequate facilities/ resources (including work equipment) are provided to eliminate or minimise risks, Work at Height Regulations 2005, Regulations 6, 7, 8 and Schedule 3 Part 2. Please ensure you read and fully understand the manual. Follow the content during assembly and ensure that the tower is complete prior to use. This manual must be made available to the user/ assembler at all times. Whilst the initial section of this manual is dedicated to the preferred method of assembly by using PlusGard™ and thereby complying with the Work at Height Regulations 2005, a secondary method (3T) is also included within this Manual. However, with the availability of PlusGard™ the user/ duty holder may find justification of this option difficult in relation to compliance with The Work at Height Regulations 2005. Sufficient training, combined with necessary experience, must also be considered and be appropriate to achieve competency to undertake basic mobile access tower assembly. Only competent (and qualified) personnel should undertake erection, dismantling and alteration (and organisation, planning and supervision) of basic mobile access towers, Regulation 5, the Work at Height Regulations 2005 and consideration should be given to providing additional (minimum) training beforehand, if required (Regulation 6 (5)(b)).

GENERAL SAFETY NOTES 1. Ensure that all necessary components and safety equipment (including PlusGard™ components)

are available and operational. 2. Inspect the tower and PlusGard™ components for signs of damage or incorrect functioning

prior to use. Damaged or incorrect components must not be used. Castors and adjustable legs should be periodically lubricated to keep them free running.

3. Erect Exclusion zone and fit Warning Signs to comply with Schedule 3 Part 2 (11), Work at

Height Regulations 2005.

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9. Always inspect the tower after moving and before use. 10. Always beware of live electrical apparatus, cables or moving parts of machinery. 11. Care should be taken when using power tools, wash jets or other tools that cause lateral force.

The maximum lateral force on a freestanding tower at platform level is 20kg. 12. DO NOT use boxes, ladders or other such means to gain additional height. 13. Never bridge between a tower and a building unless specification and approved. 14. Never jump onto platforms. 15. Do not use hoisting arrangements on a mobile access tower. 16. Fit side guardrails at all platforms. 17. Fit toeboards on all working platforms. 18. Fit intermediate rest platforms at 4m intervals (maximum). 19. Mobile access towers are not designed to allow them to be lifted or suspended. 20. PlusGard™ is personal protection equipment only and should not be used in any other way. 21. In accordance with regulations any tower that has been erected must be inspected every 7 days

(minimum) to ensure that the tower continues to comply with the regulations.

Ensure that the platforms are free of persons and equipment and that brake locks are off prior to movement. Beware of soft or uneven ground and overhead obstructions.

The tower height must be reduced to 4m high and stabilisers raised approx 25mm clear of the ground. On completing the move apply all brakes and check adjustment and stability prior to completion of tower to full assembled height. Note Tower height must be reduced to 2m high prior to any moves if less than 4 stabilisers are used.

4. Ensure the scaffolding is to be erected on suitable foundations capable of withstanding the loads imposed by the scaffolding (Schedule 3 Part 1(2) of Work at Height Regulations 2005) and, where appropriate, adequate sole boards to be provided.

5. It is recommended that at least two people assemble the tower. 6. OCTO 250 towers MUST ALWAYS be climbed from the inside, climbing the frames only. 7. When lifting components or materials, always use reliable lifting equipment and tying methods

to ensure there is no possibility of the tower overturning. Always lift from within the tower base. 8. Mobile access towers must only be moved manually, by pushing at the base.

WIND SPEED SAFETY RULES Where possible, tie in the tower to a rigid structure when working outdoors or in exposed conditions. Beware of the funnelling effect of open ended and uncladded buildings.

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All braces are fitted with self-priming triggers that automatically lock when attached to the tower. Attach braces square to the tower and remove by releasing the trigger. When attaching diagonal braces and handrails the braces face down.

BRACES

MAXIMUM LOAD The maximum load is 225 Kg per platform evenly distributed. A maximum of 3 platforms may be loaded. Maximum load, however, is 625 Kg for total tower.

STABILISERS Stabilisers should be attached at about 45° as shown, so that A is roughly equal to B, and forms the largest possible square. If this is not possible, e.g. façade work, use the alternative methods illustrated.

PLUSGARD™ PlusGard™ is an additional advance guardrail that provides fall prevention for the erector throughout tower erection and dismantling. PlusGard™ consists of verticals (mounted on the tower uprights) and telescopic guardrails*. The vertical’s locking device can be operated from above or below and can either be locked in the closed or open configurations. The locking procedures for both configurations are as follows:

Beaufort Scale Description Air

Speed Action 0-4 Moderate Breeze

Small branches move 13-18 mph

No action required

5-6 Strong Breeze Large branches bend

25-31 mph

Tie tower to a rigid structure

>6 Walking progress impeded

34-40 mph

Dismantle tower if such conditions are expected

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NARROW WIDTH TOWERS Narrow width towers are assembled following the same steps as explained for span towers, except that all platforms are trapdoor platforms ensuring that successive trapdoors are at opposing ends of tower.

The attachment hooks are closed and locked when the locking pistons do not project from the back face of the attachment hooks (circled). Turn and pull the upper control handle (or turn and push the lower control handle), as shown adjacent. The attachment hooks are now locked in the open position and the locking piston projects out from the back face of the attachment hook (circled). It is now easy to reposition the vertical. When the vertical is in place, turn and push the upper control handle (or turn and pull the lower control handle) as shown adjacent.

The attachment hooks are now closed and locked. Always ensure that the locking piston does not project from the back face of the attachment hook (circled). Even the slightest projection indicates that it is not properly secured.

When erecting a scaffold, PlusGard™ is assembled at each bay from ground level. It is then moved upwards, a lift at a time, after the scaffold’s integral guardrails have been installed. When dismantling, PlusGard is attached at the top lift and moved down as the scaffold is dismantled. Each move is made from the lift below before the scaffold’s integral guardrails have been removed. Note It is recommended that operatives wear gloves when using PlusGard™. * How to choose the telescopic guardrails

Both the scaffold’s bay length and lift height will influence the choice of telescopic guardrail. It is preferable to choose guardrails that can be moved up or down in one step.

Should the choice of telescopic guardrails be limited and the available guardrail does not extend to the required diagonal distance then the following solution should be adopted:

Move initial vertical half the distance it is required to travel, ie 1m, then move the adjacent vertical to the correct height (2m).

Move the initial vertical to the correct height (2- step moving).

Repeat as necessary until all telescopic guardrails are at the required position.

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◊ Stabiliser not required • Do not use tower unless tied in

* For one working platform only (additional platforms to be factored accordingly)

c For folding toeboards: 1 per working platform

COMPONENT BREAKDOWN CHARTS (PlusGard™ method – Span)

COMPONENTS PLATFORM HEIGHT IN METRES

OCTO 250 SPAN 2 3 4 5 6 7 8 9 10 11 12

8R Span Frame 2 4 4 6 6 8 8 10 10 12 12

4R Span Frame 2 0 2 0 2 0 2 0 2 0 2

Horizontal Brace 6 6 6 10 10 10 10 14 14 14 14

Diagonal Brace 4 6 8 10 12 14 16 18 20 22 24

Toeboard (End)* c 2 2 2 2 2 2 2 2 2 2 2

Toeboard (Side)* c 2 2 2 2 2 2 2 2 2 2 2

Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4

Castor 4 4 4 4 4 4 4 4 4 4 4

Fixed Platform 1 1 1 2 2 2 2 3 3 3 3

Trapdoor Platform 1 1 1 2 2 2 2 3 3 3 3

Stabiliser Std. (Indoor use) 4 4 4 4 4 4 4 0 0 0 0

Stabiliser Std. (Outdoor use) 4 4 4 4 4 0 0 • • • •

Stabiliser Large (Indoor use) 0 0 0 0 0 0 0 4 4 4 4

Stabiliser Large (Outdoor use) 0 0 0 0 0 4 4 • • • •

Total tower self weight (Kg) - 1.5m 124 136 159 201 223 235 257 310 332 344 366



• Do not use tower unless tied in



Additional kit required during Assembly and Dismantle operations (Span)


OCTO 250 SPAN 2 3 4 5 6 7 8 9 10 11 12


Fixed Platform 0 1 1 0 0 1 1 1 1 2 2


Plusgard Vertical 4 4 4 4 4 4 4 4 4 4 4

Telescopic Guardrail 4 4 4 4 4 4 4 4 4 4 4

Weight of Additional kit (Kg) - 1.5m 33 57 64 33 40 64 70 64 70 94 100



Note Weight of Additional kit required during assembly and dismantle operations has not been factored into total tower self weight calculations.

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COMPONENT BREAKDOWN CHARTS (PlusGard™ method - Narrow width)


OCTO 250 N/W 2 3 4 5 6 7 8 9 10 11 12

8R N/W Frame 2 4 4 6 6 8 8 10 10 12 12

4R N/W Frame 2 0 2 0 2 0 2 0 2 0 2


Diagonal Brace 4 6 8 10 12 14 16 18 20 22 24

Toeboard (End)*c 2 2 2 2 2 2 2 2 2 2 2

Toeboard (Side)* c 2 2 2 2 2 2 2 2 2 2 2

Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4

Castor 4 4 4 4 4 4 4 4 4 4 4









Additional kit required during Assembly and Dismantle operations (Narrow Width)





OCTO 250 N/W 2 3 4 5 6 7 8 9 10 11 12









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DAILY CHECKS The tower must be checked on a daily basis and after any significant weather changes e.g. high winds, snow, frost. Use the checklist below prior to use. Tower is vertical and

square Braces correctly

fitted and secure Castors locked/ legs

correctly adjusted All castors, base

plates and stabilisers are in contact with the ground

Toeboards located

Correct stabilisers

fitted, adjusted and secure

Hand rails fitted and

secure If a box has not been ticked, do not use the tower until the fault is rectified. Where a fault is found, access to the tower must be stopped.

KEY to Table

a) Adjustable over a distance of 500mm b) 200mm wheel diameter c) 125mm wheel diameter d) Telescopic from 2.30m to 3.66m e) Telescopic from 2.07m to 3.07m f) Telescopic from 1.25m to 2.5m

OCTO 250 SERIES

Tower Length Component Size Component Weight

COMPONENTS 1.5m 2.5m 3.2m

m Kg m Kg m Kg

8R Span Frame 4R Span Frame

2.0 1.0

13.2 9.1

2.0 1.0

13.2 9.1

2.0 1.0

13.2 9.1

8R Narrow Frame 4R Narrow Frame

2.0 1.0

9.8 6.7

2.0 1.0

9.8 6.7

2.0 1.0

9.8 6.7

Horizontal Brace Diagonal Brace

1.5 1.8

1.59 1.92

2.5 2.7

2.03 2.81

3.2 3.4

3.01 3.12

Fixed Platform 1.5 11.8 2.5 18.2 3.2 21.9

Trapdoor Platform 1.5 12.0 2.5 18.6 3.2 22.6

Toeboard (side) Toeboard (end) Toeboard (end)

1.5 1.45 0.85

1.1 0.7 0.5

2.5 1.45 0.85

3.3 0.7 0.5

3.2 1.45 0.85

4.3 0.7 0.5

Span Narrow

1.5 1.5

6.30 6.05

2.5 2.5

9.09 8.84

3.2 3.2

11.90

11.65

Adjustable Leg a 1.3 a 1.3 a 1.3

Castor 200 Castor 125

b c

4.3 2.5

b c

4.3 2.5

b c

4.3 2.5

Stabiliser Std. Stabiliser Large 5.0

7.7 5.0 7.7 5.0

7.7

V51 2.11 5.1 2.11 5.1 2.11 5.1

T2L T2M T3L

d e f

4.6 3.4 3.2

d e f

4.6 3.4 3.2

d e f

4.6 3.4 3.2

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3. With each frame’s spigot facing inward, attach two horizontals to the upright of each frame, above the first rung and square the two frames to each other. Note It may be advantageous to place a platform at low level to assist in “squaring” tower.

4. With the aid of a spirit level, you should

now make any necessary adjustments to level the tower by turning the adjustment collar.

5. Attach two diagonal braces to the bottom

rung of each base frame, with one brace being placed so the brace hook is as far to the outer edge as possible, the other brace hook should be placed at least 50mm (one tube width) from outer edge. Then attach the other end of both braces to the 5th rung on the opposing 2m frame.

THE BASE SECTION 1. Fit four legs and castors (or base plates) to two 8 rung span frames (see illustration). Turn the

height adjustment collar on each leg until approximately 100mm from the lower end. Insert each leg until the collar is in contact with the frame’s tubing.

2. Set each castor brake on by moving the brake lever fully down.

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To attach the stabiliser, fit the upper screw clamp to frame upright, approx. 50mm above the seventh rung (from ground), then fit the lower screw clamp as low as possible to the frame upright.

Notes It may be advantageous to ensure that stabilisers are fitted from frame side as shown. Large Stabilisers can only be fitted after upper frame has been placed. If repositioning stabilisers when in position then screw clamps MUST be loosened prior to movement then re– fixed.

When specified, the correct stabilisers or outriggers must always be used. See component checklists on Pages 6 and 7. When using standard stabilisers, fit them now.

Set each stabiliser at 45° (approx) creating as large a footprint as possible and ensure that they are in firm contact with the ground.

1. Ensuring PlusGard™ attachment hooks are locked in the open position, attach the PlusGard™ vertical to the tower upright at the lowest possible location (adjustable leg) and close the attachment hooks using either the lower or upper control handles.

2. Repeat Step 1 for remaining tower uprights. 3. Attach the telescopic guardrail components by mounting the

outer tube end into the guardrail holder ensuring that the spring-loaded locking device on the end attachment is securely locked in the guardrail holder.

Handle

Telescopic Guardrail

End Attachment Transport Lock

ASSEMBLING UPPER FRAMES

Lower Control

(height adjustable)

Upper Control

Guardrail holder

Attachment

Handle

hooks

STABILISERS

4. Release the inner tube end by pressing the transport locking pin on the underside of the tube and pull out the inner tube to the required length. Mount the inner tube end into the opposing vertical guardrail holder and check that the spring-loaded locking device on the end attachment is securely locked in position.

PlusGard Vertical

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Repeat steps 3 & 4 for remaining telescopic guardrails.

8. Add two 1m (4 Rung) frames on top of the existing frames.

9. Attach two diagonal braces from

5th rung of lower frame and attach to 1st rung of opposing 1m (4 rung) frame in accordance with bracing pattern.

10. Fit horizontal braces (both sides)

to 2nd rung of 1m frame to form permanent lower handrail to 1st lift platform level.

11. Remove platforms from 1m

level. 12. Raise PlusGard™ verticals into a

position where the upper telescopic guardrail is one metre above the first lift platform level by releasing the attachment hooks (using either the lower or upper control handles) and lock in the open position.

5. Raise PlusGard™ verticals into a position where the upper telescopic guardrail is one metre above the platform level by releasing the attachment hooks (using either the lower or upper control handles) and lock in the open position.

6. Lift the verticals, in turn, and

attach at the appropriate height. Lock and secure the attachment hooks and turn verticals inward to face of tower (platform) to minimise gap.

7. Place a trapdoor platform and

fixed platform to 1m level (4 rungs) ensuring that the trapdoor hinge is to the outside edge.

Note This platform is used temporarily to assist in the erection of the tower.

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13. Lift PlusGard™ verticals, in turn, and attach at the appropriate height. Lock and secure the

attachment hooks and turn verticals inward to face of tower (platform) to minimise gap.

Repeat steps 16 to 21 as necessary until desired height is reached (max. height 8m outdoors and 12 m indoors).

22. Upon completion of the tower, disassemble PlusGard™ (at the top) in the opposite order to the assembly (steps 1 to 5).ie. detach telescopic guardrails by releasing the inner tube ensuring that the transport locking pin on the underside of the tube is properly engaged.

23. Detach the outer tube end and thereafter remove the PlusGard™ verticals. The tower is complete.

14. Place trapdoor platform and fixed platform to first lift platform level (8 rungs) ensuring that the trapdoor hinge is to the outside edge.

15. Attach Horizontal braces (both sides) to top rung of 1m frame to

form permanent guardrail to 1st lift platform level. Horizontal braces should be set at outer edge to one side of the tower and one tube width (50mm) from outer edge to other side.

16. Add two more 8 Rung frames on top of

the existing frames. 17. Attach two diagonal braces from lower

frame to upper frame in accordance with bracing pattern.

18. Attach a further two diagonal braces in

accordance with brace pattern. 19. Repeat steps 12 & 13 to raise

PlusGard™ into a position where the upper telescopic guardrail is one metre above the second platform level.

20. Place a trapdoor platform and fixed

platform to second lift platform level ensuring that trap is placed at opposing corner to trap on platform below.

21. Attach horizontal braces (both sides)

at 2nd rung and 4th rung above platform to form permanent guardrail. Horizontal braces should be set at outer edge to one side of the tower and one tube width (50mm) from outer edge to other side.

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ODD HEIGHT TOWERS 1. Fit four legs and castors (or base plates) to two 8 rung span frames (see illustration). Turn the

height adjustment collar on each leg until approximately 100mm from the lower end. Insert each leg until the collar is in contact with the frame’s tubing.

2. Set each castor brake on by moving the brake lever fully down. 3. With each frame’s spigot facing inward, attach two horizontals to the upright of each frame,

above the first rung and square the two frames to each other. Note It may be advantageous to place a platform at low level to assist in “squaring” tower.

4. With the aid of a spirit level, you should now make any necessary adjustments to level the tower by turning the adjustment collar.

5. Attach two diagonal braces to the bottom rung of

each base frame, with one brace being placed so the brace hook is as far to the outer edge as possible, the other brace hook should be placed at least 50mm (one tube width) from outer edge.

6. Then attach the other end of both braces to the fifth

rung on the opposing 2m frame. 7. Fit stabilisers (see Stabilisers section; page 10)

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8. Ensuring advance guardrail (PlusGard™) attachment hooks are locked in the open position, attach the PlusGard™vertical to the tower upright at the lowest possible location (adjustable leg) and close the attachment hooks using either the lower or upper control handles.

9. Repeat Step 8 for remaining tower uprights. 10. Attach the telescopic guardrail components by mounting the outer tube end into the guardrail

holder ensuring that the spring-loaded locking device on the end attachment is securely locked in the guardrail holder.

11. Release the inner tube end by pressing the transport locking pin on the underside of the tube

and pull out the inner tube to the required length. Mount the inner tube end into the opposing vertical guardrail holder and check that the spring-loaded locking device on the end attachment is securely locked in position.

12. Repeat steps 10 & 11 for remaining telescopic guardrails.

14. Place a trapdoor platform and fixed platform to first lift platform level (4 rungs) ensuring that the trapdoor hinge is to the outside edge.

Note This platform may be used temporarily to assist in the erection of the tower.

15. Add two more frames on top of the existing frames.

13. Raise PlusGard™verticals into a position where the upper telescopic guardrail is one metre above the first lift platform level (4th rung) by releasing the attachment hooks (using either the lower or upper control handles) and lock in the open position. Lift the verticals, in turn, and attach at the appropriate height. Lock and secure the attachment hooks and turn verticals inward to face of tower (platform) to minimise gap.

16. Attach two diagonal braces from lower frame to upper frame in accordance with bracing pattern.

17. Attach two more diagonal braces in accordance with

brace pattern. 18. Attach horizontal braces (both sides) at 2nd rung and 4th

rung above platform to form permanent guardrail. Horizontal braces should be set at outer edge to one side of the tower and one tube width (50mm) from outer edge to other side.

15

21. Upon completion of tower disassemble PlusGard™ (at the top) in the opposite order to the assembly (steps 8 to 12).ie. detach telescopic guardrails by releasing the inner tube ensuring that the transport locking pin on the underside of the tube is properly engaged.

22. Detach the outer tube end and

thereafter remove the PlusGard™ verticals.

The tower is complete.

Repeat steps 15 to 20 as necessary until desired height is attained (max. height 8m outdoors and 12 m indoors).

DISMANTLING THE TOWER

The dismantling procedure is simply a reversal of the steps explained for the assembly. For your safety and that of others, take particular care not to allow components to fall to the ground since this will not only result in damage but may cause serious injury.

TRAINING These instructions do not take the place of proper training. Consult your supplier for details of specific training courses for users of mobile access towers.

19. Repeat step 13 to raise PlusGard™ into a position where the upper telescopic guardrail is one metre above the second platform level.

20. Place a trapdoor

platform and fixed platform to second lift platform level ensuring that trap is placed at opposing corner to trap on platform below.

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COMPONENT BREAKDOWN CHARTS (3T Method - Span)

THE 3T METHOD OF ASSEMBLY


Whilst our recommended method of assembly to fully comply with the Work at Height Regulations 2005, is by using Advance Guardrails (PlusGard™), a secondary method has also been approved and endorsed by both PASMA and the HSE. This method is known as the 3T method (Through The Trap).


COMPONENTS PLATFORM HEIGHT IN METRES OCTO 250 SPAN 2 3 4 5 6 7 8 9 10 11 12

8R Span Frame 2 4 4 6 6 8 8 10 10 12 12 4R Span Frame 2 0 2 0 2 0 2 0 2 0 2


Diagonal Brace 4 6 8 10 12 14 16 18 20 22 24

Toeboard (End)* c 2 2 2 2 2 2 2 2 2 2 2

Toeboard (Side)* c 2 2 2 2 2 2 2 2 2 2 2

Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4

Castor 4 4 4 4 4 4 4 4 4 4 4

Fixed Platform 1 1 1 1 1 1 1 1 1 1 1



















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THE BASE SECTION 1. Fit four legs and castors (or base

plates) to two 4 rung span frames (see illustration). Turn the height adjustment collar on each leg until approximately 100mm from the lower end. Insert each leg until the collar is in contact with the frame’s tubing.

2. Set each castor brake on by moving

the brake lever fully down.

Additional kit required during Assembly and Dismantle operations (N/W)

COMPONENT BREAKDOWN CHARTS (3T Method – Narrow Width)

COMPONENTS PLATFORM HEIGHT IN METRES OCTO 250 N/W 2 3 4 5 6 7 8 9 10 11 12

8R N/W Frame 2 4 4 6 6 8 8 10 10 12 12 4R N/W Frame 2 0 2 0 2 0 2 0 2 0 2 Horizontal Brace 6 6 6 10 10 10 10 14 14 14 14 Diagonal Brace 4 6 8 10 12 14 16 18 20 22 24 Toeboard (End)*c 2 2 2 2 2 2 2 2 2 2 2 Toeboard (Side)* c 2 2 2 2 2 2 2 2 2 2 2 Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4 Castor 4 4 4 4 4 4 4 4 4 4 4 Trapdoor Platform 1 1 1 2 2 2 2 3 3 3 3 Stabiliser Std. (Indoor use) 4 4 4 4 4 4 4 0 0 0 0 Stabiliser Std. (Outdoor use) 4 4 4 4 4 0 0 • • • • Stabiliser Large (Indoor use) 0 0 0 0 0 0 0 4 4 4 4 Stabiliser Large (Outdoor use) 0 0 0 0 0 4 4 • • • •


Total tower self weight (Kg) - 2.5m 118 130 149 187 206 218 237 286 305 317 336 Total tower self weight (Kg) - 3.2m 131 143 163 210 230 242 262 320 339 352 371 • Do not use tower unless tied in




OCTO 250 N/W 2 3 4 5 6 7 8 9 10 11 12

Horizontal Brace 0 0 4 0 0 4 4 4 4 8 8 Trapdoor Platform 0 1 1 0 0 1 1 1 1 2 2 Weight of Additional kit (Kg) - 1.5m 0 12 19 0 0 19 19 19 19 37 37




18


5. Attach two temporary horizontal braces to 3rd rung of

frame (at least 100mm from outer edge). 6. Add two 2m frames on top of base (1m) frames.

STABILISERS When specified, the correct stabilisers or outriggers must always be used. See component checklist on Page 16/ 17. When using standard stabilisers, fit them now.

To attach the stabiliser, fit the upper screw clamp to frame upright, approx.50mm above the seventh rung (from ground) as shown above, then fit the lower screw clamp as low as possible to the frame upright. Set each stabiliser at 45° creating as large a footprint as possible and ensure that they are in firm contact with the ground. Note It may be advantageous to ensure that stabilisers are fitted from frame side as shown. Large Stabilisers can only be fitted after upper frame has been placed. If repositioning stabilisers when in position then screw clamps MUST be loosened prior to movement then re– fixed.

3. With each frame’s spigot facing inward, attach two horizontals to the upright of each frame, above the first rung and square the two frames to each other. Note It may be advantageous to place a platform at

7. Attach two diagonal braces to the bottom rung of each base frame, with one brace being placed as far to the outer edge as possible, the other brace being placed at least 50mm (one tube width) from outer edge. Then attach the other end of both braces to the bottom rung on the opposing 2m frame.

8. Attach two more diagonal braces (in

accordance with brace pattern) from 1st rung to 5th rung of upper frame.

9. Remove temporary horizontal braces. The base is complete

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11. Operative should then climb through

the trap and rest against the platform (just below base of back) with feet firmly placed on frame rungs (as shown).

10. Place a trapdoor platform at 2m level (8 rungs from ground) and set to one side of tower.

Note The trapdoor platform hinge to be set to inside of tower (temporary only to assist in assembling tower).

12. Fit horizontal braces to both sides of platform at 2nd and 4th rungs above platform level to form guardrail protection to single platform only.

It is safe to use the platform when horizontal braces have been locked and secured in place.

13. Add two more 8 rung frames on

top of the existing frames.


15. Attach two more diagonal braces

from 1st rung to 5th rung of upper frames.

16. Place fixed platform initially at

4m level and slide across to opposite side of tower (as shown) from where operative is standing below then place trapdoor platform ensuring that trap is placed at opposing side to trap on platform below.

Note Ensure that the trapdoor hinge is to the outside edge.

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1. At top platform level unlock horizontal braces and diagonal brace at furthest positions from the trap before descending through the trap. As before, rest against the platform (just below base of back) with feet firmly placed on frame rungs.

2. Remove horizontal braces and pass down to operatives below.

3. Unlock diagonal brace at top

platform level. 4. Descend to platform level below

and remove top platform.


The following instructions describe the steps necessary to dismantle the OCTO 250 tower utilising the 3T method. For your safety and that of others, take particular care not to allow components to fall to the ground since this will not only result in damage but may cause serious injury.

5. Standing on platform, unlock diagonal braces fixed at upper frames then remove diagonal braces completely.

6. Remove upper frames. Repeat steps 1 to 6 until dismantle process is complete.

17. Repeat step 11 above and climb through the trap.

18. Fit horizontal braces to both sides of platform

at 2nd and 4th rungs above platform level to form permanent handrail.

It is safe to use the platform once horizontal braces are locked and secured in place.

Repeat steps 10 to 18 until desired height has been reached (max. height 8m outdoors and 12 m indoors).

21

1. Fit four legs and castors (or base plates) to two 8 rung span frames (see illustration). Turn the height adjustment collar on each leg until approximately 100mm from the lower end. Insert each leg until the collar is in contact with the frame’s tubing.

2. Set each castor brake on by moving the

brake lever fully down. 3. With each frame’s spigot facing inward,

attach two horizontals to the upright of each frame, above the first rung and square the two frames to each other. Note It may be advantageous to place a

platform at low level to assist in “squaring” tower.


5. Attach two diagonal braces to the

bottom rung of each base frame, with one brace being placed so the brace hook is as far to the outer edge as possible, the other brace hook should be placed at least 50mm (one tube width) from outer edge.

6. Then attach the other end of both

braces to the fifth rung on the opposing 2m frame.

7. Fit stabilisers (see Stabilisers section;

page 18)

ODD HEIGHT TOWERS – 3T Method



This platform may be used temporarily to assist in the erection of the tower.

22

9. Operative should then climb through the

trap and rest against the platform (just below base of back) with feet firmly placed on frame rungs (as shown).


10. Fit horizontal braces to both sides of platform at 2nd and 4th rungs above platform level to form guardrail protection to single platform only.


11. Add two more 8 rung

frames on top of the existing frames.


13. Attach two more diagonal

braces from 1st rung to 5th rung of upper frames.

14. Place fixed platform

initially at 3m level and slide across to opposite side of tower (as shown) from where operative is standing below then place trapdoor platform ensuring that trap is placed at opposing side to trap on platform below.


15. Repeat step 9 above and climb through the trap. 16. Fit horizontal braces to both sides of platform at 2nd and 4th

rungs above platform level to form permanent handrail. It is safe to use the platform once horizontal braces are locked and secured in place.

23

Note If using one piece folding toeboards then select correct toeboard for the desired tower, unfold and fit in place, retained by raised studs on the platform hooks (as above).

Repeat steps 1 to 5 until dismantle process is complete.


Whichever position the working platform is assembled toeboards must be fitted. Slot the toeboard set together and position on the outer edge of the platform. The toeboards are designed so that the side boards overhang the platform and the end boards are retained by raised studs on the platform hooks (see illustration).

TOEBOARDS


2. Remove horizontal braces and pass down to operatives below. 3. Descend to platform level below

and remove top platform 4. Remove diagonal braces fixed to

upper frames. 5. Remove upper frames.


24

For Technical advice (or further information) on OCTO 250 Series Towers, please contact: Turner Access Ltd, 65 Craigton Road, Glasgow, G51 3EQ

Tel: +44 (0) 141 309 5555 Fax: +44 (0) 141 309 5436

Email: [email protected]

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MOBILE ACCESS TOWER SHALLOW BRACE

INSTRUCTION MANUAL

Issued January 2008

2

INTRODUCTION

This instruction manual contains all the information required to correctly assemble the OCTO 500 shallow brace mobile access tower incorporating the two PASMA (Prefabricated Access Suppliers’ and Manufacturers Association) approved methods of assembly as endorsed by the Health and Safety Executive. The primary method of safe assembly is the incorporation of Advanced Guardrail protection (PlusGard™) to provide collective measures enabling full compliance with the Work at Height Regulations 2005. The provision and utilisation of Advanced guardrail protection is recommended for all operatives erecting OCTO 500 Mobile Access Towers. This Manual should be used in conjunction with a suitable Risk Assessment and Method Statement (by user) relative to the project to be undertaken, Work at Height Regulations 2005, Regulation 6(1). It must be noted that all employers have a responsibility to ensure that work methods (practices) and adequate facilities/ resources (including work equipment) are provided to eliminate or minimise risks, Work at Height Regulations 2005, Regulations 6, 7, 8 and Schedule 3 Part 2. Please ensure you read and fully understand the manual. Follow the content during assembly and ensure that the tower is complete prior to use. This manual must be made available to the user/ assembler at all times. Whilst the initial section of this manual is dedicated to the preferred method of assembly by using PlusGard™ and thereby complying with the Work at Height Regulations 2005, a secondary method (3T) is also included within this Manual. However, with the availability of PlusGard™ the user/ duty holder may find justification of this option difficult in relation to compliance with The Work at Height Regulations 2005. Sufficient training, combined with necessary experience, must also be considered and be appropriate to achieve competency to undertake basic mobile access tower assembly. Only competent (and qualified) personnel should undertake erection, dismantling and alteration (and organisation, planning and supervision) of basic mobile access towers, Regulation 5, the Work at Height Regulations 2005 and consideration should be given to providing additional (minimum) training beforehand, if required (Regulation 6 (5)(b)).

GENERAL SAFETY NOTES 1. Ensure that all necessary components and safety equipment (including PlusGard™ components)

are available and operational. 2. Inspect the tower and PlusGard™ components for signs of damage or incorrect functioning

prior to use. Damaged or incorrect components must not be used. Castors and adjustable legs should be periodically lubricated to keep them free running.

3. Erect Exclusion zone and fit Warning Signs to comply with Schedule 3 Part 2 (11), Work at

Height Regulations 2005.

3

9. Always inspect the tower after moving and before use. 10. Always beware of live electrical apparatus, cables or moving parts of machinery. 11. Care should be taken when using power tools, wash jets or other tools that cause lateral force. The maximum lateral force on a freestanding tower at platform level is 20kg. 12. DO NOT use boxes, ladders or other such means to gain additional height. 13. Never bridge between a tower and a building unless specification and approved. 14. Never jump onto platforms. 15. Do not use hoisting arrangements on a mobile access tower. 16. Fit side guardrails at all platforms. 17. Fit toeboards on all working platforms. 18. Fit intermediate rest platforms at 4m intervals (maximum). 19. Mobile access towers are not designed to allow them to be lifted or suspended. 20. PlusGard™ is personal protection equipment only and should not be used in any other way. 21. In accordance with regulations any tower that has been erected must be inspected every 7 days

(minimum) to ensure that the tower continues to comply with the regulations.

Ensure that the platforms are free of persons and equipment and that brake locks are off prior to movement. Beware of soft or uneven ground and overhead obstructions.

The tower height must be reduced to 4m high and stabilisers raised approx 25mm clear of the ground. On completing the move apply all brakes and check adjustment and stability prior to completion of tower to full assembled height. Note Tower height must be reduced to 2m high prior to any moves if less than 4 stabilisers are used.

4. Ensure the scaffolding is to be erected on suitable foundations capable of withstanding the loads imposed by the scaffolding (Schedule 3 Part 1(2) of Work at Height Regulations 2005) and, where appropriate, adequate sole boards to be provided.

5. It is recommended that at least two people assemble the tower. 6. OCTO 500 towers MUST ALWAYS be climbed from the inside, climbing the ladders only. 7. When lifting components or materials, always use reliable lifting material and tying methods to

ensure there is no possibility of the tower overturning. Always lift from within the tower base. 8. Mobile access towers must only be moved manually, by pushing at the base.

WIND SPEED SAFETY RULES Where possible, tie in the tower to a rigid structure when working outdoors or in exposed condi-tions. Beware of the funnelling effect of open ended and uncladded buildings.

4

Beaufort Scale Description Air

Speed Action 0-4 Moderate Breeze

Small branches move 13-18 mph

No action required

5-6 Strong Breeze Large branches bend

25-31 mph

Tie tower to a rigid structure

>6 Walking progress impeded 34-40 mph

Dismantle tower if such conditions are expected

All braces are fitted with self-priming triggers that automatically lock when attached to the tower. Attach braces square to the tower and remove by releasing the trigger. When attaching diagonal braces and handrails the braces face down.

BRACES

MAXIMUM LOAD The maximum platform load is 225 Kg/ platform evenly distributed, 625 Kg for total tower. A maximum of 3 platforms may be loaded.

STABILISERS Stabilisers should be attached at about 45° as shown, so that A is roughly equal to B, and forms the largest possible square. If this is not possible, e.g. façade work, use the alternative methods illustrated.

PLUSGARD™ PlusGard™ is an additional advanced guardrail that provides fall prevention for the erector throughout tower erection and dismantling. PlusGard™ consists of verticals (mounted on the tower uprights) and telescopic guardrails*. The vertical’s locking device can be operated from above or below and can either be locked in the closed or open configurations. The locking procedures for both configurations are as follows:

5

The attachment hooks are closed and locked when the locking pistons do not project from the back face of the attachment hooks (circled). Turn and pull the upper control handle (or turn and push the lower control handle), as shown adjacent. The attachment hooks are now locked in the open position and the locking piston projects out from the back face of the attachment hook (circled). It is now easy to reposition the vertical. When the vertical is in place, turn and push the upper control handle (or turn and pull the lower control handle) as shown adjacent.

The attachment hooks are now closed and locked. Always ensure that the locking piston does not project from the back face of the attachment hook (circled). Even the slightest projection indicates that it is not properly secured.

When erecting a mobile access tower, PlusGard™ is assembled at ground level. It is then moved upwards, a lift at a time, after the tower’s integral guardrails have been installed. When dismantling, PlusGard is attached at the top lift and moved down as the tower is dismantled. Each move is made from the lift below before the tower’s integral guardrails have been removed. * How to choose the telescopic guardrails

Both the scaffold’s tower width and lift height will influence the choice of telescopic guardrail. It is preferable to choose guardrails that can be moved up or down in one step.

Should the choice of telescopic guardrails be limited and the available guardrail does not extend to the required diagonal distance then the following solution should be adopted:

Move initial vertical half the distance it is required to travel, ie 1m, then move the adjacent vertical to the correct height (2m).

Move the initial vertical to the correct height (2- step moving).

Repeat as necessary until all telescopic guardrails are at the required position.


6

COMPONENT BREAKDOWN CHARTS (PlusGard™ method)


OCTO 500 SPAN 2 3 4 5 6 7 8 9 10 11 12

4R Span Frame 1 2 2 3 3 4 4 5 5 6 6

2R Span Frame 1 0 1 0 1 0 1 0 1 0 1


Diagonal Brace 4 6 8 10 12 14 16 18 20 22 24

Toeboard (End)* c 2 2 2 2 2 2 2 2 2 2 2

Toeboard (Side)* c 2 2 2 2 2 2 2 2 2 2 2

Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4

Castor 4 4 4 4 4 4 4 4 4 4 4

Fixed Platform 1 1 1 2 2 2 2 3 3 3 3









4R Span Ladder Frame 1 2 2 3 3 4 4 5 5 6 6







OCTO 500 SPAN 2 3 4 5 6 7 8 9 10 11 12


Fixed Platform 0 1 1 0 0 1 1 1 1 2 2








7

COMPONENT BREAKDOWN CHARTS (PlusGard™ method)


OCTO 500 N/W 2 3 4 5 6 7 8 9 10 11 12

4R N/W Frame 1 2 2 3 3 4 4 5 5 6 6

2R N/W Frame 1 0 1 0 1 0 1 0 1 0 1


Diagonal Brace 4 6 8 10 12 14 16 18 20 22 24

Toeboard (End)*c 2 2 2 2 2 2 2 2 2 2 2

Toeboard (Side)* c 2 2 2 2 2 2 2 2 2 2 2

Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4

Castor 4 4 4 4 4 4 4 4 4 4 4









2R N/W Ladder Frame 1 0 1 0 1 0 1 0 1 0 1

4R N/W Ladder Frame 1 2 2 3 3 4 4 5 5 6 6

Additional kit required during Assembly and Dismantle operations (Narrow Width)





OCTO 250 N/W 2 3 4 5 6 7 8 9 10 11 12









8

KEY to Table a) Adjustable over a distance of 500mm b) 200mm wheel diameter c) 125mm wheel diameter d) Telescopic from 2.30m to 3.66m e) Telescopic from 2.07m to 3.07m f) Telescopic from 1.25m to 2.50m

DAILY CHECKS The tower must be checked on a daily basis and after any significant weather changes e.g. high winds, snow, frost. Use the checklist below prior to use.

Tower is vertical and square

Braces correctly

fitted and secure Castors locked/ legs

correctly adjusted All castors, base

plates and stabilisers are in contact with the ground

Toeboards located

Correct stabilisers

fitted, adjusted and secure

Hand rails fitted and

secure If a box has not been ticked, do not use the tower until the fault is rectified.

Where a fault is found, access to the tower must be stopped.

Folding Toeboard

9


3. With each frame’s spigot

facing inward, attach two horizontals to the upright of each frame, below the first rung and square the two frames to each other.

Note It may be advantageous to place a platform at low level to assist in “squaring” tower.


5. Attach two diagonal braces to the bottom rung of each base frame, with one brace being placed so the brace hook is as far to the outer edge as possible, the other brace hook should be placed at least 50mm (one tube width) from outer edge. Then attach the other end of both braces to the 3rd rung on the opposing 2m frame.

The base is complete.

When specified, the correct stabilisers or outriggers must always be used. See component checklist on Pages 6/ 7. When using standard stabilisers, fit them now.

STABILISERS

THE BASE SECTION 1. Fit two legs and castors (or base plates) to one 4 rung span frame (see illustration) and two

legs and castors to one 4 rung ladder frame. Turn the height adjustment collar on each leg until approximately 100mm from the lower end. Insert each leg until the collar is in contact with the frame’s tubing.

10

Notes It may be advantageous to ensure that stabilisers are fitted from frame side as shown. Large Stabilisers can only be fitted after upper frame has been placed. If repositioning stabilisers when in position then screw clamps MUST be loosened prior to movement then re– fixed.

Set each stabiliser at 45° creating as large a footprint as possible and ensure that they are in firm contact with the ground.

Guardrail holder

(height adjustable)

Attachment hooks

Handle

Handle

PlusGard™ Vertical

ASSEMBLING UPPER FRAMES

Upper Control

Lower Control

1. Ensuring PlusGard™ attachment hooks are locked in the open position, attach the PlusGard™ vertical to the tower upright at the lowest possible location (adjustable leg) and close the attachment hooks using either the lower or upper control handles.

2. Repeat Step 1 for remaining tower uprights. 3. Attach the telescopic guardrail components by mounting the

outer tube end into the guardrail holder ensuring that the spring-loaded locking device on the end attachment is securely locked in the guardrail holder.

Telescopic Guardrail

End Attachment Transport Lock

To attach the stabiliser, fit the upper screw clamp to frame upright approx. 50mm above 3rd rung (from ground), then fit the lower screw clamp as low as possible to the frame upright.


11


7. Place a trapdoor platform and fixed platform to 1m level (2 rungs) ensuring that the trapdoor hinge is to the outside edge.


8. Add two 1m (2 Rung) frames on top of the

existing frames, ensuring that ladder frame is positioned as frame below.


6. Lift the verticals, in turn, and attach at the

appropriate height. Lock and secure the attachment hooks and turn verticals inward to face of tower (platform) to minimise gap.

9. Attach two diagonal braces from 3rd rung of lower frame and attach to 1st rung of opposing 1m (2 rung) frame in accordance with bracing pattern.

10. Fit horizontal braces (both sides) to 1st rung of

1m frame to form permanent lower handrail to 1st lift platform level.

11. Remove platforms from 1m level.

12. Raise PlusGard™ verticals into a position where the upper telescopic guardrail is one metre above the first lift platform level by releasing the attachment hooks (using either the lower or upper control handles) and lock in the open position.

13. Lift PlusGard™ verticals, in turn, and attach at

the appropriate height. Lock and secure the attachment hooks and turn verticals inward to face of tower (platform) to minimise gap.

12

14. Place trapdoor platform and fixed platform to first lift platform level (4 rungs) ensuring that the trapdoor hinge is to the outside edge.

15. Attach Horizontal braces (both sides) to top rung of

1m frame to form permanent guardrail to 1st lift platform level. Horizontal braces should be set at outer edge to one side of the tower and one tube width (50mm) from outer edge to other side.

19. Repeat steps 12 & 13 to raise PlusGard™ into a position

where the upper telescopic guardrail is one metre above the second platform level.

16. Add two more 4 Rung

frames on top of the existing frames ensuring that ladder frame is positioned as frame below.

17. Attach two diagonal braces

from lower frame to upper frame in accordance with bracing pattern.

18. Attach a further two

diagonal braces in accordance with brace pattern.

20. Place a trapdoor platform and fixed platform to second lift platform level ensuring that trap is positioned to suit ladder.

21. Attach horizontal braces (both sides) at 1st rung and 2nd


Repeat steps 16 to 21 as necessary until desired height is reached (max. height 8m outdoors and 12m indoors).


23. Detach the outer tube end and thereafter remove the PlusGard™ verticals. The tower is complete.

13

ODD HEIGHT TOWERS 1. Fit two legs and castors (or base plates) to one 4 rung span frame (see illustration) and two

legs and castors to one 4 rung ladder frame. Turn the height adjustment collar on each leg until approximately 100mm from the lower end. Insert each leg until the collar is in contact with the frame’s tubing.


3. With each frame’s spigot

facing inward, attach two horizontals to the upright of each frame, below the first rung and square the two frames to each other.

Note It may be advantageous to place a platform at low level to assist in “squaring” tower.


6. Then attach the other end of both braces to the 3rd rung on the opposing 2m frame.

5. Attach two diagonal braces to the bottom rung of each base frame, with one brace being placed so the brace hook is as far to the outer edge as possible, the other brace hook should be placed at least 50mm (one tube width) from outer edge.

7. Fit stabilisers (see Stabilisers section; page 9).

8. Ensuring advance guardrail (PlusGard™) attachment hooks are locked in the open position, attach the PlusGard™vertical to the tower upright at the lowest possible location (adjustable leg) and close the attachment hooks using either the lower or upper control handles.

Repeat Step 8 for remaining tower uprights.

14




12. Lift the verticals, in turn, and attach at the

appropriate height. Lock and secure the attachment hooks and turn verticals inward to face of tower (platform) to minimise gap.

9. Attach the telescopic guardrail components by mounting the outer tube end into the guardrail

holder ensuring that the spring-loaded locking device on the end attachment is securely locked in the guardrail holder.

13. Place a trapdoor platform and fixed platform to 1m level (2 rungs) ensuring that the trapdoor hinge is to the outside edge.


14. Add two 2m (4 Rung) frames on top of the

existing frames ensuring that ladder frame is positioned as frame below.

15. Attach two diagonal braces from 3rd rung of lower frame and attach to 1st rung of opposing 2m (4 rung) frame in accordance with bracing pattern.

16. Attach two more diagonal braces in accordance with

brace pattern. 17. Attach horizontal braces (both sides) at 1st rung and 2nd


15

18. Repeat steps 11 & 12 to raise PlusGard™ into a position where the upper telescopic guardrail is one metre above the second platform level.

19. Place a trapdoor

platform and fixed platform to second lift platform level ensuring that trap is positioned to suit ladder.

Repeat steps 14 to 19 as necessary until desired height is attained (max. height 8m outdoors and 12 m indoors).


23. Detach the outer tube end and

thereafter remove the PlusGard™ verticals.

The tower is complete.


The dismantling procedure is simply a reversal of the steps explained for the assembly. For your safety and that of others, take particular care not to allow components to fall to the ground since this will not only result in damage but may cause serious injury.


16


4R Span Frame 1 2 2 3 3 4 4 5 5 6 6 2R Span Frame 1 0 1 0 1 0 1 0 1 0 1


Diagonal Brace 4 6 8 10 12 14 16 18 20 22 24

Toeboard (End)* c 2 2 2 2 2 2 2 2 2 2 2

Toeboard (Side)* c 2 2 2 2 2 2 2 2 2 2 2

Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4

Castor 4 4 4 4 4 4 4 4 4 4 4

Fixed Platform 1 1 1 1 1 1 1 1 1 1 1











COMPONENT BREAKDOWN CHARTS (3T Method - Span)

THE 3T METHOD OF ASSEMBLY


Whilst our recommended method of assembly to fully comply with the Work at Height Regulations 2005, is by using Advanced Guardrails (PlusGard™), a secondary method has also been approved and endorsed by both PASMA and the HSE. This method is known as the 3T method (Through The Trap).


• Do not use tower unless tied in * For one working platform only (additional platforms to be factored accordingly) c For folding toeboards: 1 per working platform

COMPONENTS PLATFORM HEIGHT IN METRES OCTO 500 SPAN 2 3 4 5 6 7 8 9 10 11 12 Horizontal Brace 0 0 4 0 0 4 4 4 4 8 8 Trapdoor Platform 0 1 1 0 0 1 1 1 1 2 2





17

Additional kit required during Assembly and Dismantle operations (N/W)

COMPONENT BREAKDOWN CHARTS (3T Method – Narrow Width)

COMPONENTS PLATFORM HEIGHT IN METRES OCTO 500 N/W 2 3 4 5 6 7 8 9 10 11 12

4R N/W Frame 1 2 2 3 3 4 4 5 5 6 6 2R N/W Frame 1 0 1 0 1 0 1 0 1 0 1

Horizontal Brace 6 6 6 10 10 10 10 14 14 14 14 Diagonal Brace 4 6 8 10 12 14 16 18 20 22 24 Toeboard (End)*c 2 2 2 2 2 2 2 2 2 2 2 Toeboard (Side)* c 2 2 2 2 2 2 2 2 2 2 2 Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4 Castor 4 4 4 4 4 4 4 4 4 4 4 Trapdoor Platform 1 1 1 2 2 2 2 3 3 3 3 Stabiliser Std. (Indoor use) 4 4 4 4 4 4 4 0 0 0 0 Stabiliser Std. (Outdoor use) 4 4 4 4 4 0 0 • • • • Stabiliser Large (Indoor use) 0 0 0 0 0 0 0 4 4 4 4 Stabiliser Large (Outdoor use) 0 0 0 0 0 4 4 • • • •


Total tower self weight (Kg) - 2.5m 116 132 148 190 207 222 238 291 307 323 339 Total tower self weight (Kg) - 3.2m 130 145 163 213 230 246 263 324 341 357 374

4R N/W Ladder Frame 1 2 2 3 3 4 4 5 5 6 6 2R N/W Ladder Frame 1 0 1 0 1 0 1 0 1 0 1

• Do not use tower unless tied in * For one working platform only (additional platforms to be factored accordingly)



OCTO 500 N/W 2 3 4 5 6 7 8 9 10 11 12 Horizontal Brace 0 0 4 0 0 4 4 4 4 8 8 Trapdoor Platform 0 1 1 0 0 1 1 1 1 2 2 Weight of Additional kit (Kg) - 1.5m 0 12 19 0 0 19 19 19 19 37 37 Weight of Additional kit (Kg) - 1.5m 0 19 27 0 0 27 27 27 27 54 54



THE BASE SECTION 1. Fit two legs and castors (or base plates) to

one 2 rung span frame (see illustration) and two legs and castors to one 2 rung ladder frame. Turn the height adjustment collar on each leg until approximately 100mm from the lower end. Insert each leg until the collar is in contact with the frame’s tubing.


brake lever fully down.

18


5. Attach two temporary horizontal braces to 2nd rung of

frame. 6. Add one 2m (4Rung) frame and one 2m ladder frame

on top of base (1m) frames.

STABILISERS When specified, the correct stabilisers or outriggers must always be used. See component checklist on Page 16/ 17. When using standard stabilisers, fit them now.

To attach the stabiliser, fit the upper screw clamp to frame upright approx. 50mm above the 3rd rung (from ground), as shown above, then fit the lower screw clamp as low as possible to the frame upright. Set each stabiliser at 45° creating as large a footprint as possible and ensure that they are in firm contact with the ground. Note It may be advantageous to ensure that stabilisers are fitted from frame side as shown. Large Stabilisers can only be fitted after upper frame has been placed. If repositioning stabilisers when in position then screw clamps MUST be loosened prior to movement then re– fixed.

3. With each frame’s spigot facing inward, attach two horizontals to the upright of each frame, below the first rung and square the two frames to each other. Note It may be advantageous to place a platform at low level to assist in “squaring” tower.

7. Attach two diagonal braces to the bottom rung of each base frame, with one brace being placed so the brace hook is as far to the outer edge as possible, the other brace hook should be placed at least 50mm (one tube width) from outer edge. Then attach the other end of both braces to the bottom rung on the opposing 2m frame.

8. Attach two more diagonal braces (in

accordance with brace pattern) from 1st rung to 3rd rung of upper frame.

9. Remove temporary horizontal braces. The base is complete

19

11. Operative should then climb through the trap and rest against the platform (just below base of back) with feet firmly placed on frame rungs (as shown).



12. Fit horizontal braces to both sides of platform at 1st and 2nd rungs above platform level to form guardrail protection to single platform only.

Note It is safe to use the platform when horizontal braces have been locked and secured in place.

13. Add two more 4 rung frames on

top of the existing frames.


15. Attach two more diagonal braces

from 1st rung to 3rd rung of upper frames.

16. Place fixed platform initially at

4m level (diagonally) and slide across to opposite side of tower (as shown) from where operative is standing below then place trapdoor platform ensuring that trap is placed at opposing side to trap on platform below.


20

1. At top platform level unlock

horizontal braces and diagonal brace at furthest positions from the trap before descending through the trap. As before, rest against the platform (just below base of back) with feet firmly placed on frame rungs.


3. Unlock diagonal brace at top

platform level. 4. Descend to platform level below

and remove top platform.


The following instructions describe the steps necessary to dismantle the OCTO 500 tower utilising the 3T method. For your safety and that of others, take particular care not to allow components to fall to the ground since this will not only result in damage but may cause serious injury.

5. Standing on platform, unlock diagonal braces fixed at upper frames then remove diagonal braces completely.

6. Remove upper frames. Repeat steps 1 to 6 until dismantle process is complete.

17. Repeat step 11 and climb through the trap. 18. Fit horizontal braces to both sides of platform

at 1st and 3rd rungs above platform level to form permanent handrail.

It is safe to use the platform once horizontal braces are locked and secured in place.


21

1. Fit two legs and castors (or base plates) to one 4 rung span frame (see illustration) and two legs and castors to one 4 rung ladder frame. Turn the height adjustment collar on each leg until approximately 100mm from the lower end. Insert each leg until the collar is in contact with the frame’s tubing.


brake lever fully down. 3. With each frame’s spigot facing inward,

attach two horizontals to the upright of each frame, above the first rung and square the two frames to each other. Note It may be advantageous to place a

platform at low level to assist in “squaring” tower.

ODD HEIGHT TOWERS – 3T Method



This platform may be used temporarily to assist in the erection of the tower.


5. Attach two diagonal braces to the

bottom rung of each base frame, with one brace being placed so the brace hook is as far to the outer edge as possible, the other brace hook should be placed at least 50mm (one tube width) from outer edge.

6. Then attach the other end of both

braces to the third rung on the opposing 2m frame.

7. Fit stabilisers (see Stabilisers section;

page 18)

22

9. Operative should then climb through the

trap and rest against the platform (just below base of back) with feet firmly placed on frame rungs (as shown).


10. Fit horizontal braces to both sides of platform at 1st and 2nd rungs above platform level to form guardrail protection to single platform only.


11. Add two more 4 rung

frames on top of the existing frames.


13. Attach two more diagonal

braces from 1st rung to 3rd rung of upper frames.

14. Place fixed platform

initially at 3m level and slide across to opposite side of tower (as shown) from where operative is standing below then place trapdoor platform ensuring that trap is placed at opposing side to trap on platform below.


15. Repeat step 9 above and climb through the trap. 16. Fit horizontal braces to both sides of platform at 1st and 2nd

rungs above platform level to form permanent handrail. It is safe to use the platform once horizontal braces are locked and secured in place.

23

Note If using one piece folding toeboards then select correct toeboard for the desired tower, unfold and fit in place, retained by raised studs on the platform hooks (as above).

Repeat steps 1 to 5 until dismantle process is complete.


Whichever position the working platform is assembled toeboards must be fitted. Slot the toeboard set together and position on the outer edge of the platform. The toeboards are designed so that the side boards overhang the platform and the end boards are retained by raised studs on the platform hooks (see illustration).

TOEBOARDS




3. Descend to platform level below and remove top platform

4. Remove diagonal braces fixed to

upper frames. 5. Remove upper frames.

24

For Technical advice (or further information) on OCTO 500 Series Towers, please contact: Turner Access Ltd, 65 Craigton Road, Glasgow, G51 3EQ

Tel: +44 (0) 141 309 5555 Fax: +44 (0) 141 309 5436

Email: [email protected]

octo 250 2008 - pasma · pdf filethis instruction manual contains all the information required...

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