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10.31 Safety shed over drive way : Supply, fabrication, installation and taking out temporary horizontal safety shed over the drive way around construction work place where public safety is likely to be endangered due to construction activities; which shall be made of 0.27 mm thick galvanized iron plain sheet fitted at 15'-0'' height horizontally over the drive way or path way at the outer periphery of the building with 75mm x 40mm x 5 mm M.S Chanel post and purlin,20mm MS Rod and 40mmx40mmx6mm MS Angle as ties etc. by standard anchoring and welding, nut-bolts etc, all complete and accepted by the Engineer-in-charge( Salvage materials shall be the contractors property after completion of work.)

Considering 36'-2'' X20'-5'' =738.59 sft work

SL Item Name Quantity Unit Item Rate (Taka) Item Unit Unit Price (Taka) Sub Total (Taka)
1 M.S. angle, T and Z-section, Channel etc. Cost of M.S materials. : (i)75mmx40mmx5mm M.S Chanel. :(Vertical Top Post 10x12'-6"=185rft + Purline(horiz. portion) 5x20'-5"=102.10rft)=287.10rft + Add wastage 5% =14.36rft= 301.46 rft)=91.88rm @5.69 kg per rm=522.80kg 522.8 KG 70000 per M. ton 70 36596
2 M.S. angle, T and Z-section, Channel etc. (ii)40mmx40mmx6mm M.S Angle. :(For Tie 2x36'-2"=72.34rft + Add wastage 5% =3.62rft)=75.96rft=23.15rm @3.854kg per rm =89.22kg 89.22 KG 70000 per M. ton 70 6245.4
3 Grade 400/420(400Mpa / 400N/mm2 ≈ 60900psi/ 60 Grade), BDS-6935-2006, B400: and ratio fy to fu => 1.25 (iii)20mm dia M.S bar. :For Tie 9x36'-2"=325.53rft + Add wastage 5% =16.28rft)=341.81rft=104.18rm @2.466kg per rm =256.91kg Total Fabrication work= 868.93kg 256.91 KG 72000 per M. ton 72 18497.52
4 Safety Shade( with 22BWG MS sheet) (iv)Safety Shade(with 22BWG MS sheet) :(Horizontal surface 36'-2''X20'-5''=738.59sft + Add wastage 5% =36.9295sft)=775.5195sft 775.5195 sft 42.75 sft 42.75 33153.46
5 Ordinary labour Workshop charge: For fabrication work=868.93kg 868.93 kg 550 per day 25 21723.25
6 Fitting and fxing of safety net framing system cost for fitting and fixing wire net to the frame and frame as position=738.59sft 738.59 sft 30 per sft 30 22157.7
7 Tools and Machineries : Tools and Plants LS 500
Sub-Total 138873.33
Contractor's Profit 10% 0.1 13887.33
Contractor's Overhead Expenses 3.5% 0.035 4860.57
Total 157621.23
Add VAT with adjustment factor. 1.08108 7.5% 0.075 12780.09
Grand Total 170401.32
Rate per sft 230.71
Rate per sqm 2483.36
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