| | Estimation of pile jacketing cost at Pier 7 (cofferdam method) | | Si. no. | Item | Unit | Quantity | Unit price (Tk.) | Total cost (Tk.) | Remarks |
| | Section-I: cofferdam construction | | I-A | Materials | | | | | considering the work to be completed within 6 months and the steel materials are used on a rental basis | | 1 | Sheet pile rent (400 mm) | Ton | 142.12 | 14,040.00 | 1,995,319.17 | | | 2 | H-beam rent (450 mm) | Ton | 12.38 | 10,800.00 | 133,754.54 | | | I-B | Equipment | | | | | | | 1 | Berge (02 pcs)—600 ton | Month | 6 | 600,000.00 | 4,800,000.00 | | | 2 | Mud pump (20 HP) | Nos | 2 | 40,000.00 | 80,000.00 | | | I-C | Construction cost | | | | | | | 1 | Driving of sheet piles and construction of cofferdam | | 154.50143 | 93,525.00 | 14,449,746.24 | | | Subtotal (I) | | | | 21,458,819.95 | |
| | Section-II: pile jacketing work | | II-A | Materials | | | | | | | 1 | MASTERFLOW-870 | Bag | 122 | 1,725.00 | 219,000.00 | 135,000.00 | | 2 | Cement | Bag | 720 | 485.00 | 350,200.00 | 30,000.00 | | 3 | Coarse sand | cft | 1100 | 67.00 | 73,700.00 | 367,500.00 | | 4 | 5–10 mm stone | t | 59 | 4,400.00 | 261,360.00 | 63,750.00 | | 5 | 10 mm rebar | t | 2.75 | 73,000.00 | 218,724.00 | 70,000.00 | | 6 | 6 mm rebar | t | 0.65 | 68,000.00 | 60,550.00 | 1,696,505.00 | | 7 | Super plasticizer | kg | 1150 | 75.00 | 86,250.00 | 95,710.00 | | 8 | other related materials cost | Nos | | | 253,520.00 | | | Subtotal (II-A) | | | | 1,523,304.00 | |
| | II-B | Equipment summary | | | | | | | 1 | Concrete mixture machine-1 | Nos | 1 | 4.50 | 30,000.00 | 135,000.00 | | 2 | Concrete mixture machine-2 | Nos | 1 | 1.00 | 30,000.00 | 30,000.00 | | 3 | Generator | Nos | 3 | 4.25 | 30,000.00 | 367,500.00 | | 4 | Welding machine | Nos | 2 | 4.25 | 7,500.00 | 63,750.00 | | 5 | Air compressor | Nos | 2 | 4.25 | 7,500.00 | 70,000.00 | | 7 | Formwork | kg | 9,190 | 68,000.00 | 180.00 | 1,696,505.00 | | 8 | Fuel for the equipment | Liter | 1,420 | 75.00 | 66.00 | 95,710.00 | | other related equipment | Nos | | | 253,520.00 | | | Subtotal (II-B) | | | | 2,708,465.00 | |
| | II-C | Manpower summary | | | | | | | 1 | Chinese site manager | Person | 1 | 6.00 | 390,000.00 | 2,340,000.00 | | 2 | Chinese concrete specialist | Person | 1 | 6.00 | 390,000.00 | 2,340,000.00 | | 3 | Project coordinator | Person | 1 | 6.00 | 150,000.00 | 900,000.00 | | 4 | Engineer | Person | 1 | 6.00 | 55,000.00 | 330,000.00 | | 5 | Purchase officer | Person | 1 | 6.00 | 55,000.00 | 330,000.00 | | 6 | Lab engineer | Person | 1 | 6.00 | 50,000.00 | 300,000.00 | | 7 | Lab helper | Person | 1 | 6.00 | 25,000.00 | 150,000.00 | | 8 | Foreman | Person | 1 | 6.00 | 25,000.00 | 150,000.00 | | 9 | Skilled labor | Person | 8 | 5.50 | 20,000.00 | 880,000.00 | | 10 | Unskilled labor | Person | 8 | 4.50 | 18,000.00 | 6,488,000.00 | | Subtotal (II-C) | | | | 1,178,000.00 | |
| | II-D | Test costs | | | | | | | 1 | Drilled core test | | | | 415,000.00 | | | 2 | Compressive strength test machine cost | | | | 100,000.00 | | | Subtotal (II-D) | | | | 515,000.00 | | | Subtotal (II) | | | | 13,114,769.00 | |
| | III | Miscellaneous | | | | | | | 1 | Transportation by local vehicle | Nos | 1 | 70,000.00 | 490,000.00 | | | 2 | Air ticket for foreigner | Nos | 2 | 150,000.00 | 600,000.00 | | | 3 | House and food | | | | 642,000.00 | | | 4 | Refreshment | | | | 100,000.00 | | | Subtotal (III) | | | | 1,832,000.00 | |
| | IV | Direct cost A = (subtotal (I + II + III)) | | | | 36,405,588.95 | | | Overheads 10% based on “A, C” | | | | 3,640,559.00 | | | Profit 10% based on “A, D” | | | | 3,640,559.00 | | | Total excluding VAT and AIT (B = C + D) | | | | 43,686,707.00 | | | AIT | | | | 3,512,411.00 | | | VAT | | | | 3,014,383.00 | | | Total cost including taxes (BDT) | | | | 50,213,501.00 | |
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