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29.5 Trench treatment for protection against incoming termites to the establishment through underground by making trench around existing building /structures at a required depth of 750 mm from existing level including supplying anti-termite chemicals named DURS BAN 20 EC / equivalent preparing the solution to be mixed with water in the ratio of chemical: water = 1:19, applying the solution into trench with the help of a chemical sprayer in three layers and each layer follows a 250 mm thick back-fill in trench etc all complete and accepted by the Engineer-in-charge.

Considering 100 rft of work

SL Item Name Quantity Unit Item Rate (Taka) Item Unit Unit Price (Taka) Sub Total (Taka)
1 DURS BAN 20 EC DURS BAN 20EC 5.25 liter 1050 per litre 1050 5512.5
2 Earthwork in excavation E/ work in excv. trench 100'-0" x 1'-6" x 2'-6"= 375 375 cft 4979.17 % 0 cft 4.98 1867.5
3 Skilled labour Skilled labour 2 nos 600 per day 600 1200
4 Skilled technician Skilled technician 0.25 no 1200 per day 1200 300
5 Ordinary labour T & P, sundries, & sprayer 1 LS 550 per day 25 25
6 Ordinary labour Local carriage 1 LS 550 per day 50 50
Sub-Total 8955
Contractor's Profit 10% 0.1 895.5
Contractor's Overhead Expenses 3.5% 0.035 313.43
Total 10163.93
Add VAT with adjustment factor. 1.08108 7.5% 0.075 824.1
Grand Total 10988.03
Rate per rft 109.88
Rate per cum 360.52
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