USER GUIDE - Austin White Ladders
Contents
1. A Safety First STABILISERS BALLAST Stabilisers or outriggers and ballast weights shall always be fitted when specified o The Quantity Schedules show the recommended stabilisation In circumstances where there is restricted ground clearance for stabilisers outriggers contact your supplier for advice Ballast must be of solid materials i e not water or loose sand and should not be positioned to overload individual legs Ballast should be secured against accidental removal where practicable and be supported on the lowest rung of the bottom frame MOVEMENT The tower should only be moved by manual effort and only from the base When moving the tower beware of live electrical apparatus particularly overhead plus wires or moving parts of machinery No person or materials should be on the tower during movement o 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 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 and set the adjustable legs as required o D2. Mobile Aluminium Tower 1450 850 Ladderspan 3T Through the Trapdoor Method Edition November 2011 Safety First Mobile 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 com BoSS 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 erecting dismantling 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 practice If you need further information design advice additional guides or any other help with this product please contact Youngman on 44 0 1621 745900 or email sales youngmangroup com COMPLIANCES The BoSS Ladderspan aluminium system has been tested and certified to EN 1004 2004
3. It is recommended that for ease of levelling a gap of 50mm is left between the bottom of the leg and the adjustable nut Adjustable Legs are for levelling only You must not adjust all four to gain extra height NB Base plates can be fitted to adjustable legs in lieu of castors if it is not necessary to move the tower a Unlocked L Locked Assembly Procedure Fit one horizontal brace red onto the vertical of an span frame just above the bottom rung with the claw facing outwards The frame will now be self supporting Note All locking claws must be opened before fitting Position the ladder frame as shown and fit the other end of the horizontal brace on to the vertical just above the bottom rung Fit a second horizontal brace between the bottom rungs on the other side of the frames to square the tower Assembly Procedure Fit 2 additional end frames ensuring the frame interlock clips are engaged Fit 2 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 stabilisers see noteson page 30 IMPORTANT Only use the adjustable legs to level the tower and not to gain extra height INTERLOCK CLIP Unlocked Assembly Procedure Fit a temporary deck on the lowest rungs Fit a trapdoor deck on the 4th rung 2 0m with the trapdoor next to the l
4. OZC OSZ Erci Oec FOLC i YOZ i OSL CLL ISL SVL 6Eelf ocli 90L 62 cZ sJ JyBlem JJaS eo YIMOL ug L Quantity Schedule v Jose oidoosajd GL dS 5 4 v p p p v v v titir r Fr 1 S qe 5 JIdOos j OLdS yrivirviririrl JESIIG2 S Pexl4 dS d p v v v v v v v r JapjoH lEog 0 e Z Z Z Z E Z Z ZS Ae re ee ee A Ge A Ge a Ge A A Ge z z paeoqeo pu4 wg d BREESE BEEBE gt EU C CIEE CLEE CLEE LIER LIER OLE WORRN OUT ORT Om Sauce She Pee Y r k 5 oer ISL v00LN3 JO edods y JO Spis no ae WUG Z J pun SJAMO aer eu19 x3 I Uu19 U o UG cDUS Wg syjdU z Ul aiqelleAV 00L NI 0 uedslappe 1 Ogg SSog V WED A 4 47 A Quantity Schedule 850 Width towers NUMBER OF WORKING PLATFORMS ALLOWED The MAXIMUM SAFE WORKING LOAD the combined weight of the users tools and materials that may be placed on the tower is the total weight less the self weight of the tower The total weight for the towers shown in the schedule is 950kg Example 1 An 850 tower built using the 3T method with a 4 2m platform height and a platform length of 1 8m has a self weight of 151kg 950kg 151kg 799kg maximum safe working load total weight self weight users tools and materials Example 2 An 850 tower built using the 3T method with a 11 m platform height and a platform length of 2 5m has a self weight of 408kg 950kg 410kg 540kg maximum safe working load total weight self weight users tools
5. Remove upper platforms from protected platform levels below Pass removed components out of the tower to a colleague V E A Safety Checklist Mobile Towers 3T Method CHECKLIST Ensure all brace claws operate and lock correctly prior to erection Inspect components prior to erection 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 Assembly Procedure Mobile Towers 1450 3T Method ASSEMBLY FOR 1450 TOWERS Always start building with the smallest height frames at the base of the tower Frame at base hi Oe ile VO Waly 122 2 rung 2 7 4 7 6 7 8 7 10 7 3 rung es ll 4 rung Where all 3 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 4 2m platform height tower startingwith a 2 rung frame Youngman recommend 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 Push castor into adjustable leg Push Castor adjustable leg assemblies into 2 rung span frame Lock castors Repeat proceadure with 2 rung ladder frame
6. 2994 A 3201 SP10 X 4458 X 4734 OP 15 X 5195 X 5485 stabiliser feet should form a square as shown in the diagram and table above Assembly Procedure Mobile Towers 3T Method ASSEMBLY AND DISMANTLING PROCEDURES When building a BoSS Tower To comply with the Work at Height Regulations we show assembly procedures with platforms every 2 metres in height and the locating of guardrails in advance of climbing onto a platform to reduce the risk of a fall All platforms feature double guardrails on both faces of either individual platforms or fully decked levels All guardrails should be 1 and 2 rungs 0 5m and 1 0m above platforms Never stand on an unguarded platform positioned above the first rung of a tower If your risk assessment shows it necessary you may also need to guardrail platforms at this level Always start building with the smallest height frames at the base of the tower Frame at base Veh ae el phe el Os ele OO VO Vel 22 2 rung 2 4 1 6 7 8 7 10 7 3 rung 12 32 Oe fez 02 Vz rung Where all 3 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 TO DISMANTLE A BOSS LADDERSPAN TOWER Remove toeboards and pass down the tower Unclip farthest end of braces and immediately go to protected trapdoor position on ladder to complete removal
7. and materials For greater heights and loads consult Youngman for guidance PLATFORM LOADING On an 850 tower a platform comprises of a single deck only The maximum safe working load the combined weight of the users tools and materials that may be placed on a platform is 2 5kg evenly distributed over the deck The quantities on pages 11 and 12 will enable BoSS towers to be built safely and therefore comply with the requirements of the Work at Height Regulations 2005 They include double guardrails to all platforms and toeboards will need to be added if any levels are used as working platforms and for storage of materials EN 1004 requires platforms at least every 4 2m and these measures will exceed that requirement V MWD 4 4 47 47 Quantity Schedule 850 Width Towers BALLAST Internal External Use There is no requirement for ballase on 850 towers if using Stabilisers as detailed in the table on page 12 MOBILE OUTRIGGERS MP16 mobile outriggers can be used instead of SP15 telescopic Stabilisers respectively as detailed below Mobile outrigger kits comprise MP16 Mobile Outrigger 125 150 200mm Castor Use same diameter castors as on tower 200mm Adjustable leg Plan Braces The above components replace SP15 Stabiliser 4 STABILISERS To improve rigidity larger stabilisers can be used at a lower level than shown in the table on page 12 90 Single Width 850 Towers Dimension X SP X
8. Class 3 BRITS 4O Ze d ge a 9 gt e zm Vi E EN 1004 2004 BS EN 1004 2004 Instruction Manual EN 1298 IM EN PREPARATION AND INSPECTION Inspect the equipment before use to ensure that it is not damaged and that it functions properly Damaged or incorrect components shall not be used 1 BoSS Ladderspan V ME amp Safety First SAFE USE Check that all components are on site undamaged and that they are functioning correctly refer to Checklist and Quantity schedules Damaged or incorrect components shall not be used Check if the ground on which the mobile access tower is to be erected and moved is capable of supporting the tower The safe working load is 275 kgs 606lbs per platform level uniformly distributed up to a maximum of 950kgs 2100lbs per tower including self weight Towers must always be climbed from the inside using the built in ladder during assembly and use Itis recommended that towers should be tied to a solid structure when left unattended 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 towers should not be lifted with a crane or other lifting device youngmangroup com 2
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11. adder 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 fit guardrails on the 5th and 6th rungs in that order on both sides of the platform Do not climb onto the deck until it is fully guardrailed When horizontal braces are fitted 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 Assembly Procedure Fit the next pair of diagonal braces in opposing directions between the 3rd and 5th rungs add 2 additional end frames Add two more diagonal braces between the Sth and th rungs If finishing at this height 4 2m platiorm reposition the fixed 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 th and 9th rungs as shown Climb up the ladder and from the protected trapdoor position fit the guardrails on the 9th and 10th rungs in that order on both sides of the tower 21 BoSS Ladderspan Assembly Procedure When building beyond a 4 2m platform height Continue to add pairs of end frames diagonal braces and fit 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 t
12. an 4 rung frame Insert adjustable leg castor assemblies into end frames and lock the castors see diagram Step 1 page 17 Base plates can be fitted to the adjustable legs if it is not necessary to move the tower Fit 2 horizontal braces to the 850 end frames as shown in steps 2 and 3 for the 1450 tower procedure page 18 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 Assembly Procedure Fit 2 diagonal braces in opposing directions between the 1st and 3rd rungs Ensure the frames are vertical and level by checking with a spirit level and setting the adjustable legs as necessary Fit stabilisers See notes on page 30 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 INTERLOCK CLIP Locked Unlocked Assembly Procedure Fit 2 pairs of diagonal braces in opposing directions between the 3rd and oth rungs and the Sth and th rungs Locate a trapdoor deck on the 6th rung with the trapdoor next to the ladder Assembly Procedure Climb up the inside of the tower and from the protected position of the trapdoor fit guardrails to the 7th and 8th rungs in that order on both sides of the tower Assembly Procedure Continue the procedure until the required
13. e horizontal as possible Adjust the position of the top clamp to ensure the stabiliser foot is in firm contact with the ground Ensure clamps are secure Stabilisers are used when the tower is to be moved occasionally frequent movement will require mobile outriggers When moving the tower adjust the top clamps to lift the four stabiliser feet a maximum of 25mm off the ground and then unlock the castor brakes After moving ensure all four stabiliser feet are repositioned in firm contact with the ground STABILISER DIMENSIONS A SP7 1227 Ki SP10 2241 2 SP15 2757 i OUTRIGGERS For information on mobile outriggers please consult your supplier PREFABRICATED ACCESS SUPPLIERS AND MANUFACTURERS ASSOCIATION Austin White Ladders Ltd 9 Northleigh Grove MARKET HARBOROUGH Leicestershire LE16 9QU www austinwhiteladders co uk Tel 0844 884 2625 Fax 0844 357 6970 email service austinwhite co uk
14. g tools and or materials 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 youngmangroup com Safety First TIES Ties should be used when the tower goes beyond its safe height beyond the limits of the stabilisers outriggers 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 cor
15. he platform until it is fully guardrailed sin S ia Cx Continue until the required height is reached Re position the fixed deck to the required platform height and fit a trapdoor deck alongside it as shown in stage 7 Fit a single diagonal at the top of the tower as shown in stage 7 Fit the final guardrails as shown in stage 7 youngmangroup com 22 Assembly Procedure Fit toeboards see Instructions on page 29 The tower is now complete AA NR Dismantling Procedure To take down the tower reverse the building sequence When removing guardrail braces unlock the 4 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 GA JAAR ZZ mn C A kl 23 BoSS Ladderspan Assembly Procedure Mobile Towers 850 3T Method ASSEMBLY FOR 850 TOWERS Always start with the smallest height frames at the base of the tower Platform height in Metres 1 7 22 37 495 7 62 77 62 07 102 11 7122 2 Rung 2 7 4 7 6 7 8 7 10 7 3 Rung 1 2 3 2 5 2 7 29 2 11 2 4 Rung Where all 3 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 3 2m platform height tower starting with
16. he requirements of the Work at Height Regulations They include double guardrails to all platforms and toeboards will need to be added if any levels are used as working platforms and for storage of materials EN 1004 requires platforms at least every 4 2m and these measures will exceed that requirement V 4 4 47 47 Quantity Schedule 1450 Width Towers BALLAST Internal External Use There is no requirement for ballast on 1450 towers if using Stabilisers as detailed in the table on page 8 MOBILE OUTRIGGERS MP16 outriggers can be used instead of SP15 stabilisers as detailed below Mobile outrigger kits comprise MP16 Mobile Outrigger 125 150 200mm Castor Use same diameter castors as on tower 200mm Adjustable leg Plan Braces The above components replace SP15 Stabiliser 4 STABILISERS To improve rigidity larger stabilisers can be used at a lower level than shown in the table on page 8 Angle of Stabiliser 1450 TOWER xx EI Double width 1450 Towers Dimension A SP7 X 3351 X 3629 SP10 X 4789 X 5100 SP15 X 5520 X 5838 Stabiliser feet should form a square as shown in the diagram and table above youngmangroup com 10 Quantity Schedule 850 Width Towers JUDI9U JAMO SIU JO woed Pex jeuoppe ue anba Aew noA DUDOUD y wo Aisee wuopejd BUMJOM 2y UOIISOd 0 ajqeun ase NOA Z a6ed uo jnp yos yuen y pees osje noA snsu asedjd LNYLYOdNI 4 G EC Cc 92 9c 9 9 9
17. o not move the tower in wind speeds over metres per second 1 mph 3 BoSS Ladderspan Safety First DURING USE Beware of high winds in exposed gusty or medium breeze conditions We recommend that in wind speeds over metres per second 1 mph 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 Raises dust and E loose paper 4 8 12 4 6 Breeze twigs snap off Large branches strong in motion 6 25 31 44 14 Breeze telegraph wires whistle Gale Force Walking Is 8 39 46 i72 difficult Beware of open ended buildings which can cause funnelling effect Do not abuse equipment Damaged or incorrect 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 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 20 kg The stairway towers featuring an inclined staircase access are for frequent use by personnel carryin
18. rectly Refer to the BoSS Inspection Manual for detailed inspection and maintenance advice Components should be stored with due care to prevent damage Ensure components are not damaged by excessive strapping forces when transported 5 BoSS Ladderspan V 4 4 4 A Safety First End Toeboard 4 Rung Ladder Frame P J J P S i d Horizonta P 1 By e Be aA r a C e L8 pe fo p V ___ 4Rung Frame S Side Toeboard NOS R DA N Platform Fixed and Trapdoor Decks LE A imho Diagonal Brace EN Stabiliser I s Ip S ANN Ik d Si Ska Ve NW Castor 2 Rung Ladder Frame Adjustable Leg quBiou JAMO SIU 10 woed Dovu jeuonippe ue anba Aew noA punoJH y Wo Asea LUIOUSIO BuMJOM oU UOTISOd ot ajqeuNn ae noA g aBed uo jnp yos ueno y pea osje noA snsu ASE IA LNVLYMOdWI ez ce LZ oz GL gL LL OL GL vl L ZL YP WO fT 6 3 H 9 G v Z Long 21g euoBeiq wz g pue WZ QZ QZ ge dz ZZ Ce ZZ gL SL SL SL vt ve itr in OL OL OL OL 9 9 9 9 pa 9081 Je UOZUOH WUG Z pue wg D 9 9 9 G G G G Y Y rir ecelelelelziz izi iz L L L yoag J00q dey wg z pue wg gt L L S L L L Z L L Lied L FR KA L L KA TA 090 Dest Wg g pue weg CH 9 G 9 G G Y G Y
19. v v D v 4 4 4 4 4 4 C 4 4 oer EUJAIXI JEULANU lUG Z pue Wg syujHue Z u qelleay POOL NI 0 uedsJappe 1 osr Geo V WED A 4 47 A Quantity Schedule 1450 Width Towers NUMBER OF WORKING PLATFORMS ALLOWED The MAXIMUM SAFE WORKING LOAD the combined weight of the users tools and materials that may be placed on the tower is the total weight less the self weight of the tower The total weight for the towers shown in the schedule is 950kg Example 1 A 1450 tower built using the 3T method with a 4 2m platform height and a platform length of 1 8m has a self weight of 175kg 950kg 180kg 775kg maximum safe working load total weight self weight users tools and materials Example 2 A 1450 tower built using the 3T method with a 11 m platform height and a platform length of 2 5m has a self weight of 436kg 950kg 436kg 514kg maximum safe working load total weight self weight users tools and materials For greater heights and loads consult Youngman for guidance PLATFORM LOADING On a 1450 tower a platform may comprise of a single deck or two decks placed side by side The maximum safe working load the combined weight of the users tools and materials that may be placed on a platform is 275kg This must be evenly distributed over either one deck or two decks placed side by side The quantities on pages 7 and 8 will enable BoSS towers to be built safely and therefore comply with t
20. working height is reached adding additional pairs of end frames diagonal braces and fitting 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 toeboards see instruction on page 29 The tower is now complete Dismantling Procedure To take down the tower reverse the building sequence When removing guardrail braces unlock the 4 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 Toeboards Mobile Towers 3T Method FITTING TOEBOARDS 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 platform position the clip as B Place 25mm thick toeboards into slots in toeboard clips as shown Side Toeboard End Toeboard Toeboard Clip A Claw B Deck Rung Stabilisers and Outriggers Mobile Towers 3T Method STABILISERS Attach one stabiliser to each corner of the tower as shown Ensure Stabiliser feet are equally spaced to form a square SP10 and SP15 telescopic stabilisers must always be fully extended Position the lower clamp so that the lower arm is as close to th
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