BOSSCO ZON User manual

This document is to be used in conjunction with the full user guide available from the
manufacturer or to download at bossaccesstowers.com/literature.
Safe use
Please read this guide carefully. Please note that diagrams are for
illustrative purposes only.
• Check that all components are onsite, undamaged and that they are functioning
correctly - (refer to Checklist and Quantity Schedules in the user guide). Damaged
or incorrect components should not be used.
• Check ground on which tower is to be erected and moved is capable of supporting
the tower.
• The safe working load is 225kg (500lbs), per platform level, uniformly distributed
up to a maximum of 720kgs (1580lbs), per tower (including self-weight).
• Beware of horizontal forces (e.g. power tools) which could generate instability.
• Maximum horizontal force equals 30kg.
• Towers must only ever be climbed from the inside and using the rungs directly
below the trapdoor.
• It is recommended that towers should be tied to a solid structure when left
unattended.
• Only use the adjustable legs to level the tower and not to gain extra height.
Adjustable legs should only ever be extended to minimum amount required to
level the tower.
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 towers should not be lifted with a crane or other lifting device.
• Ensure the safe working load of the supporting decks and the tower structure is
not exceeded.
Movement
• The tower should only be moved by manual effort, and only from the base.
• No person or materials should be on the tower during movement.
• Caution should be exercised when wheeling a tower over rough, uneven or
sloping ground, taking care to unlock and lock castors. If stabilisers are fitted,
they should only be lifted a maximum of 25mm above the ground to clear ground
obstructions.
• The overall height of the tower when being moved, should not exceed 2.5 times
the minimum base dimensions, or 4 metres overall height with stabilisers fitted in
the correct position (whichever is the smallest). If stabilisers are not fitted in the
standard position, the overall height of the tower should not exceed 2m.
• Before use, check the tower is still correct and complete.
• After every movement of the tower use a spirit level to check that it is vertical and
level to within 10mm/m and set the adjustable legs as required.
• Do not move the tower in wind speeds over 7.7 metres per second
(17 mph).
• Mobile access towers are not designed to be lifted or suspended.
NOTE: If the tower is moved, you MUST inspect prior to use.
Ties
For further information on tying-in a tower please contact your supplier or the
manufacturer.
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 must not be used.
ZONE:1
PN03304300
4 Rung Ladder Frame
Horizontal Brace
4 Rung
Span Frame
Side Toe board
Platform
(Fixed and
Trapdoor
Decks)
Diagonal
Brace
Stabiliser
2 Rung
Frame
Castor
Adjustable
Leg
2 Rung
Ladder
Frame
End Toe Board
BoSS Zone:1 850 to EN 1004: Available in 2 lengths - 1.8m and 2.5m.
Internal/external use - towers under 2.5m are outside of the scope of EN 1004
Stabilisers should always be tted when specied.
NOTE: Above 8.2m it is necessary to reposition platforms during the assembly and dismantling process to reduce the self-weight of the tower and optimise the maximum safe working load.
Stabilisers should always be tted when specied.
NOTE: Above 8.2m it is necessary to reposition platforms during the assembly and dismantling process to reduce the self-weight of the tower and optimise the maximum safe working load.
Description Yes
Tower structure upright and level
Castors locked and legs correctly adjusted
Diagonal braces tted
Stabilisers tted as specied
Platforms located and wind-locks engaged
Interlock clips engaged
Toe boards located
Guardrails tted correctly and positively locked. See illustration below
Llave de
resorte
Espita
Spring
Clip
Spigot
1
2
3
Check frame interlock clips are locked. See illustration below:
Check environmental changes have not affected the tower, and the effective support of
the stabilisers. Always t as shown. Refer to this checklist before using each time.
Ensure horizontal braces and guardrails are tted correctly.
Ensure interlock clips on frame members are in the ‘locked’ position.
Ensure wind-locks are engaged before moving onto the deck levels.
BoSS Zone:1 1450 to EN 1004: Available in 2 lengths - 1.8m and 2.5m.
Internal/external use - towers under 2.5m are outside of the scope of EN 1004
Internal or external use Internal use only
Component Working height (m) 3.2 3.7 4.2 4.7 5.2 5.7 6.2 6.7 7.2 7.7 8.2 8.7 9.2 9.7 10.2 10.7 11.2 11.7 12.2 12.7 13.2 13.7 14.2
1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 6.2 6.7 7.2 7.7 8.2 8.7 9.2 9.7 10.2 10.7 11.2 11.7 12.2
Platform height (m)
125/150/200mm Castor 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
850 2 Rung Ladder Frame 1 1 1 1 1 1 1 1 1 1 1 1
850 2 Rung Span Frame 1 1 1 1 1 1 1 1 1 1 1 1
850 3 Rung Ladder Frame 1 1 1 1 1 1 1 1 1 1 1
850 3 Rung Span Frame 1 1 1 1 1 1 1 1 1 1 1
850 4 Rung Ladder Frame 1 112122323343445455656
850 4 Rung Span Frame 1 112122323343445455656
1.8m/2.5m Trap Deck 11122223333444455556666
1.8m/2.5m Horizontal Brace (Red) 6 6 6 6 10 10 10 10 14 14 14 14 18 18 18 18 22 22 22 22 26 26 26
2.1m/2.7m Diagonal Brace (Blue) 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
1.8m/2.5m Side Toe Board 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
0.6m End Toe Board 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Small Stabiliser 4 4 4 4 4
Large Stabiliser 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
Ballast Required (External) 1.8m 1
Ballast Required (External) 2.5m 1 25 50 75
Total Tower Self-Weight (kgs) - 1.8m 80 92 113 138 151 163 168 195 208 220 226 250 263 275 280 304 317 329 335 359 372 384 389
Total Tower Self-Weight (kgs) - 2.5m 92 104 126 156 172 184 189 223 239 251 256 287 327 365 395 350 366 378 384 414 430 442 447
Max Tower Load 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720
Max Safe Load (kgs) - 1.8m 640 628 607 582 569 557 552 525 512 500 494 470 457 445 440 416 403 391 385 361 348 336 331
Max Safe Load (kgs) - 2.5m 628 616 594 564 548 536 531 497 481 469 464 433 393 355 325 370 354 342 336 306 290 278 273
Internal or external use Internal use only
Component Working height (m) 3.2 3.7 4.2 4.7 5.2 5.7 6.2 6.7 7.2 7.7 8.2 8.7 9.2 9.7 10.2 10.7 11.2 11.7 12.2 12.7 13.2 13.7 14.2
1.2 1.7 2.2 2.7 3.2 3.7 4.2 4.7 5.2 5.7 6.2 6.7 7.2 7.7 8.2 8.7 9.2 9.7 10.2 10.7 11.2 11.7 12.2Platform height
(m)
125/150/200mm Castor 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
Adjustable Leg 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
1450 2 Rung Ladder Frame 1 1 1 1 1 1 1 1 1 1 1 1
1450 2 Rung Span Frame 1 1 1 1 1 1 1 1 1 1 1 1
1450 3 Rung Ladder Frame 11111111111
1450 3 Rung Span Frame 11111111111
1450 4 Rung Ladder Frame 1 112122323343445455656
1450 4 Rung Span Frame 1 112122323343445455656
1.8m/2.5m Fixed Deck 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 3 3 3 3 4 4 4 4
1.8m /2.5m Trap Deck 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 3 3 3 3 3 4 4 4
1.8m/2.5m Horizontal Brace (Red) 6 6 6 6 10 10 10 10 14 14 14 14 18 18 18 18 22 22 22 22 26 26 26
2.1m/2.7m Diagonal Brace (Blue) 2 3 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
1.8m/2.5m Side Toe Board 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
1.2m End Toe Board 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
Small Stabiliser 4 4 4 4 4 4 4
Large Stabiliser 4 4 4 4 4 4 4 4 4 4 4 4 4
Total Tower Self-Weight (kgs) - 1.8m 112 128 133 177 211 228 235 260 294 311 321 346 380 397 404 376 391 408 415 440 474 491 498
Total Tower Self-Weight (kgs) - 2.5m 130 146 152 201 244 261 269 300 342 359 370 401 444 460 468 428 446 463 471 501 544 561 569
Max Tower Load 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720 720
Max Safe Load (kgs) - 1.8m 610 593 588 545 510 494 486 462 427 411 400 375 341 324 317 345 330 313 306 281 247 230 223
Max Safe Load (kgs) - 2.5m 592 575 570 520 477 460 453 422 379 362 351 320 278 261 253 293 275 259 251 220 177 160 153
©2017 WernerCo Rev. 12/17
QUICK GUIDE
PRE-USE SAFETY CHECKLISTSAFETY FIRST
Mobile Fibreglass Tower
850/1450 Ladderspan
3T -Through The Trapdoor Method
QUANTITY SCHEDULE 850 WIDTH TOWERS COMPONENTS
QUANTITY SCHEDULE 1450 WIDTH TOWERS
PN03304300 BoSS_DL_Folded_Zone1_Quick_Guide rev1217.indd 1 11/12/2017 15:32

The manufacturer recommends that two persons are used to build BoSS Towers. Above
4m height, it is essential that at least two persons are used. Only climb the tower from the
inside. Always start building with the smallest height frames at the base of the tower:
ASSEMBLY PRINCIPLES
Platform height in metres Frame at base
1.7, 2.2, 3.7, 4.2, 5.7, 6.2, 7.7, 8.2, 9.7, 10.2, 11.7, 12.2 2 rung
2.7, 4.7, 6.7, 8.7, 10.7 3 rung
1.2, 3.2, 5.2, 7.2, 9.2, 11.2 4 rung
1450 towers:
Platform height in metres Frame at base
1.7, 2.2, 3.7, 4.2, 5.7, 6.2, 7.7, 8.2, 9.7, 10.2, 11.7, 12.2 2 rung
2.7, 4.7, 6.7, 8.7, 10.7 3 rung
1.2, 3.2, 5.2, 7.2, 9.2, 11.2 4 rung
850 towers:
During use
Wind description Beaufort scale Beaufort no. Speed in mph Speed in m/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 difcult 8 39 - 46 17 - 21
• Beware of high winds in exposed, gusty or medium breeze conditions. We recommend that in wind speeds over 7.7 metres per second
(17mph), cease working on the tower and do not attempt to move it. If the wind becomes a strong breeze, (expected to reach 11.3 metres per
second - 25 mph) tie the tower to a rigid structure. If the wind is likely to reach gale force, (over 18 metres per second - 40 mph) the tower
should be dismantled.
• Beware of open-ended buildings, which can cause a funnelling effect.
• Raising and lowering components, tools, and/or materials by rope should be conducted within the tower base. Ensure that the safe working
load of the supporting 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 30kg.
• The stairway towers, featuring an inclined staircase access, are for frequent use by personnel carrying tools and/or materials.
• Do not use boxes or stepladders or other objects on the platform to gain extra height.
ASSEMBLY PROCEDURE
Assembly for 850 towers
Insert adjustable leg/castor assemblies into end
frames and lock the castors (see step 1 of the
1450 assembly). Base plates can be tted to the
adjustable legs if it is not necessary to move the tower.
Fit two horizontal braces (red) to the 850 end frames as
shown in Steps 2 and 3 for the 1450 tower procedure.
1
Fit a trapdoor deck on the 2nd rung. Fix the
horizontal braces (red) as guardrails on the 3rd
and 4th rungs (2 and 4 rungs above the platform)
on both sides of the tower.
2
Fit two diagonal braces (blue) in opposing directions
between the 1st and 3rd rungs. Ensure that the frames are
vertical and level by checking with a spirit level and setting
the adjustable legs as necessary. Fit stabilisers. Fit the next pair of
end frames and check the frame interlock clips are engaged.
IMPORTANT. Only use the adjustment on the legs to level the
tower and not to gain extra height.
Fit two pairs of diagonal braces in opposing directions
between the 3rd and 5th rungs and the 5th and 7th rungs.
Locate a trapdoor deck on the 6th rung, with the trapdoor
next to the ladder.
4Climb up the inside of the tower and from the protected
position of the trapdoor, t guardrails to the 7th and 8th
rungs (in that order) on both sides of the tower.
5
Continue the procedure until the required working height is
reached, adding additional pairs of end frames, diagonal
braces and tting trapdoor platforms, as shown on previous steps.
At every platform level, add horizontal braces as guardrails from the
protected position within the trapdoor (as shown in Step 5).
Fit a single diagonal at the top of the tower as shown. Fit the toe
boards - see the component section for guidance on how to t.
The tower is now complete.
6ASSEMBLY PROCEDURE
Assembly for 1450 towers
Push castor into adjustable leg. Push castor/adjustable leg
assemblies into 2 rung span frame. Lock castors. Repeat
procedure with 2 rung ladder frame.
Note: Base plates can be tted to adjustable legs in lieu of
castors if it is not necessary to move the tower.
1
Fit one horizontal brace (red) onto the vertical of a span
frame, just above the bottom rung, with the claw facing
outwards. The frame will now be self supporting. NB: All locking
claws must be opening before tting.
2
Position the ladder frame as shown and t the other end
of the horizontal brace on to the vertical. Fit a second
horizontal brace on the other side of the frames to square the tower.
3Fit a trapdoor deck on the 4th rung (2.0m) with the trapdoor
next to the ladder. Ensure the trapdoor is positioned with the
hinges towards the outside of the tower as shown. Climb the ladder
and, from the protected trapdoor position, t guardrails on the 5th
and 6th rungs (in that order) on both sides of the platform.
Do not climb onto the deck until all guardrails are in place.
When horizontal braces are tted as guardrails, they should be
0.5m and 1.0m (1 and 2 rungs) above the platform level in all cases.
Remove the temporary deck from the lowest rung.
5
Unlocked
Locked
Locked
Fit two additional end frames,
ensuring the frame interlock
clips are engaged. Fit two diagonal
braces (blue) in opposing directions,
between the 1st and the 3rd rungs.
Ensure the frames are vertical and level
by checking with a spirit level and setting
the adjustable legs as required.
Fit a temporary deck on the lowest
rungs.
Fit stabilisers.
IMPORTANT - Only use the
adjustable legs to level the tower
and not to gain extra height.
4
Fit the next pair of diagonal
braces in opposing directions
between the 3rd and 5th
rungs. Add two additional end frames.
6
Add two more diagonal braces between the 5th and 7th
rungs. If nishing at this height (4.2m platform) reposition
the xed deck to the 8th rung on the tower. Fit a trapdoor deck
alongside it, with the hinges towards the outside of the tower, and the
trapdoor next to the ladder. Add a single diagonal between the 7th
and 9th rungs as shown. Climb up the ladder, and from the protected
trapdoor position, t the guardrails on the 9th and 10th rungs, in that
order, on both sides of the tower.
7
ASSEMBLY PROCEDURE
When building beyond
a 4.2m platform height
Continue to add pairs of end frames, diagonal braces and
t trapdoor decks as shown in the previous steps. Add
guardrails at 0.5m and 1.0m, (in that order), above the platform from
the protected trapdoor position.
Do not climb onto the deck until all guardrails are in place.
8
Fit the toe boards - see the component section for guidance
on how to t.
The tower is now complete.
9
Continue until the required height is reached.
Re-position the xed deck to the required platform height and t a
trapdoor deck alongside it as shown in Step 7. Fit a single diagonal
at the top of the tower as shown in Step 7. Fit the nal guardrails as
shown in Step 7.
DISMANTLING
PROCEDURE
To take down the tower reverse the building sequence. When
removing guardrail braces, unlock the four claws furthest from the
trapdoor and then return immediately to the protected position within
the trapdoor. You may then unlock the claws at the other ends of the
guardrails to remove them from the tower.
For a detailed user guide, please go to
bossaccesstowers.com/literature
3
Where all three frame heights
are used in a tower, start with
2 rung frames at the base, with
the 3 rung frames next and the 4
rung frames on the top. Refer to
the Quantity Schedules for detail.
The procedure illustrated shows
a 1450 tower starting with a 2
rung frame and a platform height
of 4.2m. If building an 850 tower,
the following method can be used
with single decks at all levels.
PN03304300 BoSS_DL_Folded_Zone1_Quick_Guide rev1217.indd 2 11/12/2017 15:32