Table 6 The transportation distances of building materials.
Building materials | The distance from suppliers to prefab. (km) | The distance from suppliers to site (km) |
|---|---|---|
Ready-mix concrete | 5 | 80 |
Cement | – | 60 |
Sand | – | 60 |
Steel | 50 | 120 |
Brick | – | 15 |
Glass | – | 10 |
