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15.17 Pre-cast ventilators of minimum 25 mm thick of any design with cement sand (F.M.1.2) mortar (1:4) fitted and fixed in position, finishing with cement sand (F.M. 1.2) plaster (1:6) including necessary scaffolding and curing, in all floors accepted by the Engineer-in-charge. (Cement: CEM-II/B-M)

Considering 6 sft of work

SL Item Name Quantity Unit Item Rate (Taka) Item Unit Unit Price (Taka) Sub Total (Taka)
1 Portland Composite Cement ,(CEM-II/B-M 42.5N (42.5MPa) (6-20% constituents other than clinker): 50 kg bag Cement 0.25 bag 410 per bag 410 102.5
2 Sand (F.M. 1.2) Sand 1.5 cft 1900 per % cft 19 28.5
3 1/2 " thick plaster (1:4) Plaster (1:4) 18 sft 23.22 sft 23.22 417.96
4 Mason / Mosaic mistry Mason 0.75 no 700 per day 700 525
5 Ordinary labour Labour 0.5 no 550 per day 550 275
Sub-Total 1348.96
Contractor's Profit 10% 0.1 134.9
Contractor's Overhead Expenses 3.5% 0.035 47.21
Total 1531.07
Add VAT with adjustment factor. 1.08108 7.5% 0.075 124.14
Grand Total 1655.21
Rate per sft 275.83
Rate per sqm 2969.03
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