Permeable roads
Permeable roads allow rainwater to pass through into the ground. Rainwater percolates through the road’s layers.
This road design has a few structural advantages, including: reducing storm water runoff, reducing erosion, reducing the heat island effect, and filtering pollutants in the layers. They are also less costly; the costliest input in the interlocking road is the brick and this design uses almost half the quantity of bricks.
| Road Materials – Per sq.m. | |
| Material | Per sq.m. |
| Interlocking Bricks | 30 pc. |
| Stone (Broken Brick) | 2.81 pc. |
| Sand (Balu) | 1.77514 ft. |
| Red Bricks – Border | 60 pc. |
| Sand – Border | 3.11475409 ft. |
| Cement – Border | 0.1639 bag |