A 1 km road is to be constructed in existing ground level having reduced levels 54.1, 53.8, 53.5, 53.5, 54.3, 54.6, 54.6, 54.9, 54.5, 54.7 and 54.3 meters at 100 m intervals. A required reduced level at station 1 is 55 meter and the downward gradient is 1 in 1000. The width of the road at formation level is 8 meter. Slopes to be maintained at cutting and filling are 1:2 (V: H) and 1:3 (V: H) respectively. The cost per cubic meter of cutting and filling is 69 BDT and 444 BDT respectively. Calculate the volume of Earthwork and estimated cost.
| Method | Volume of cutting (m^3) | Volume of filling (m^3) | Cost of cutting (BDT) | Cost of filling (BDT) | Total cost (BDT) |
|---|---|---|---|---|---|
| Mid-section formula | 1688.13 | 4824.56 | 116,481 | 2,142,106 | 2,258,587 |
| Trapezoidal formula | 1710.25 | 4897.12 | 118,008 | 2,174.323 | 2,292,331 |
| Prismoidal formula | 1695.50 | 4848.75 | 116,990 | 2,152,845 | 2,269,835 |