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17.5.1 25 mm thick ferrocement treatment work for water proofing on roof having minimum cement content relates to mix ratio 1:2 cement conforming to BDS EN-197-1-CEM-I, 52.5N (52.5MPa)/ASTM-C 150 type–1, and best quality coarse sand (F.M. 2.2) including, the supply of all materials, cutting, binding of one layer of 20 BWG galvanized wire mesh having minimum yield strength fy = 450 MPa & having 2 mesh per 25 mm in both ways, clear cover 12 mm at the middle of the ferrocement lining, with washing of sand, chipping, cleaning the surface, watering, grouting, casting, laying on proper level of roof top or floor in panels (1.25 m x 1.25 m). Compaction including leveling, curing at least for 21 days including cost of water, electricity, in all respect as per drawing, design and accepted by the Engineer-in-charge.

Considering 100 sft of work

SL Item Name Quantity Unit Item Rate (Taka) Item Unit Unit Price (Taka) Sub Total (Taka)
1 12 mm (1/2") down grade stone chips Stone chips- 12mm down graded 11 cft 17840 per % cft 178.4 1962.4
2 Sand (F.M. 1.2) Sand (F.M. 1.2) 3 cft 1900 per % cft 19 57
3 Sand (F.M. 2.2) Sand (F.M. 2.2) 16 cft 5380 per % cft 53.8 860.8
4 Ordinary Portland Cement, BDS-EN - 197-1-CEM-I ,52.5N (52.5MPa) / ASTM C-150 Type-I, 50 kg bag Cement 5.5 bags 440 per bag 440 2420
5 20 mesh 24 BWG wire mesh 20 BWG galvanized wire mesh 2 mesh per 25mm 120 sft 25 per sft 25 3000
6 Rivet, washer, wire nails etc. Wire Nail 0.5 kg 90 per kg 90 45
7 G.I. wire 24 No. G.I. wire 0.5 kg 120 per kg 120 60
8 Head mason / Mosaic head mistry Head Mason 0.25 no 800 per day 800 200
9 Mason / Mosaic mistry Mason 0.5 no 700 per day 700 350
10 Skilled labour Skilled Labour 1 no 600 per day 600 600
11 Ordinary labour Ordinary Labour 2 nos 550 per day 550 1100
12 Ordinary labour Ordinary Labour for 7 days curing 0.88 no 550 per day 550 484
13 Ordinary labour Local Carriage, Sundries, T & P, water etc. 0.2 no 550 per day 550 110
Sub-Total 11249.2
Contractor's Profit 10% 0.1 1124.92
Contractor's Overhead Expenses 3.5% 0.035 393.72
Total 12767.84
Add VAT with adjustment factor. 1.08108 7.5% 0.075 1035.23
Grand Total 13803.07
Rate per sft 138.03
Rate per sqm 1485.75
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