Table 2 Cost comparison of conventional and bioengineering mitigation works (Rai 2010)
From: Landslide hazard map: tool for optimization of low-cost mitigation
Item | Unit | Quantity | Cost (NRs.) |
|---|---|---|---|
Cost of Bioengineering works | Â | Â | 5,875,704.00 |
 Slide clearance | m3 | 390 | 26,910.00 |
 Construction of plum concrete wall | m3 | 1350 | 4,872,150.00 |
 Construction of gabion wall | m3 | 120 | 157,920.00 |
 Construction of dry wall | m3 | 107 | 95,444.00 |
 Rill and ridge formation | m2 | 85 | 15,045.00 |
 Slope trimming | m2 | 1807 | 38,140.00 |
 Backfilling | m3 | 896 | 103,040.00 |
 Installation of sub-soil drain | m | 180 | 177,480.00 |
 Coir netting | m2 | 877 | 156,106.00 |
 Grass plantation | m2 | 1893 | 132,510.00 |
 Brushlayering | m | 581 | 18,011.00 |
 Grass seeds broadcasting on slope | m2 | 3380 | 64,220.00 |
 Shrub seeds sowing on slope | m2 | 948 | 10,428.00 |
 Fruit plantation | no | 150 | 600.00 |
 Bamboo plantation | no | 50 | 7700.00 |
Cost of Civil Engineering Works | Â | Â | 12,201,833.00 |
 Earth work in excavation | m3 | 2581 | 296,815.00 |
 Earth work in backfilling | m3 | 7350 | 845,250.00 |
 Plum Concrete revetment wall (1:2:4) | m3 | 1350 | 4,832,100.00 |
 Gabion wall | m3 | 2123 | 2,793,868.00 |
 PCC (1:2:4) | m3 | 280 | 1,079,400.00 |
 Cement masonry cut drain in (1:4) | Rm. | 200 | 727,000.00 |
 Cement masonry surface drain (1:4) | Rm. | 120 | 469,800.00 |
 Cement masonry chute (1:4) | Rm. | 100 | 643,100.00 |
 Grass Plantation | m3 | 7350 | 514,500.00 |