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1 CALCULATION SHEET. Job No. 147 Sheet 1 of 3 Rev: formula Scaffolding Ltd JOB TITLE: Nyria Way 70 High Street West End SUBJECT: Design check Southampton Hants CUSTOMER: Kier Services SO30 3DU. Tel: 02380 466900 MADE BY: Wayne Lovelock Date:28/09/12. ---------------------------------------- ---------------------------------------- ------------------------ Codes used in this design TG20:08 volumes 1 and 2 Technical guidance on the use of BSEN12811-1. BSEN12811-1. BS5975:2008 Code of practice for temporary works procedures BS6399-2: 1997 loadings for buildings-code of practice for wind loadings NASC guidance notes. BSEN 1991-1-3 and 4 snow and wind loadings. Materials used Scaffold tube Type 4 BSEN 39. BS1139:1992. Diameter Wall thickness Weight Cross section area . Second moment of area I= Radius of gyration r= Yield stress fy= 235N/mm 210N/mm . Plastic modulus Sp= . Safe working Moment Mc= Safe working shear force = Safe axial load as TG20:08 table 20 and 40.

2 Scaffold Boards BS 2482. Specification Scaffold Fittings see TG20:08 table 24. Ladder beams steel, permissible bending , permissible shear 450mm aluminum beams (Generation) permissible bending , permissible shear Diamond aluminum beams (Generation) permissible bending , permissible shear CALCULATION SHEET. Job Sheet 2 of 3 Rev: formula Scaffolding Ltd JOB TITLE: Nyria Way 70 High Street West End SUBJECT: Double width independent. Southampton Hants CUSTOMER: Kier Services SO30 3DU. Tel: 02380 466900 MADE BY: Wayne Lovelock Date: 28/09/12. CHECKED BY: Date: ---------------------------------------- ---------------------------------------- ----------------------------------- The independent scaffold erected to the girth of the block is a basic scaffold as defined by Tg20:08 It has a load class 3 with each lift boarded ( on one lift and 1 .00kn/m2 on a second lift). Wind load S factor = 22 x x (1+10/1000)= < 40 ( ).

3 One element of the scaffold to rear adjacent the balconies is a double width independent at the base lift which needs a further design check, and a loading bay adjacent the scaffold with a 10kn/m2 loading needs a design check. Double width to the rear. Load = Inner bay at 4bds wide and outer bay up to 7 bds wide. Load to transoms from inner bay, + x Bm= < therefore acceptable. End reaction to the centre ledger. Load to transoms from outer bay, + x x Bm therefore acceptable. End reaction to centre ledger= Max load to centre ledger from CPL of each transom = + Bm to ledger > , therefore use a twin ledger as the centre ledger on the base lift. < 2 x , therefore acceptable. CALCULATION SHEET. Job No. 147 Sheet 3 of 3 Rev: formula Scaffolding Ltd JOB TITLE: Nyria Way 70 High Street West End SUBJECT: Loading bay Southampton Hants CUSTOMER: Kier Services. SO30 3DU. Tel: 02380 466900 MADE BY: Wayne Lovelock Date: 27/09/12.

4 CHECKED BY: Date: ---------------------------------------- ---------------------------------------- ----------------------------------- The loading bay is to be 2 (5 board) bays wide complete with each lift boarded and up to 6m long. Loading to be one lift at any time at 10kn/m2. Load to boards with transoms at 10+ x Bm x < therefore acceptable. Load to transoms. x x Bm x < therefore acceptable. End reaction to transoms Load to ledgers at max Centre ledger Bm x > , therefore reduce centre standard spacing's to Bm x < therefore acceptable. Load to ledgers ( outside) worst case CPL. Bm x < therefore acceptable. Check load to standards. Worst case centre standard. Load + x x ( use check fittings on centre ledgers 2 x > ). Pc at = > therefore acceptable. Summary. Outside bay size , inner standards at Lift heights 2m to match independent scaffold. Transoms at 600mm centres. Only 1 lift to be fully load at a time.

5 Brace externally over 3 sides (allowing for chute and hoist.), wing brace 2nd and 4th lift to the independent, internally ledger brace every other standard to on bay only.