Soil Nail wall Advantages
Soil nail walls exhibit numerous advantages when compared to ground anchors and alternative topdown construction techniques. Some of these advantages are described below:
1. Requires smaller right of wat than ground anchors as soil nails are typically shorter.
2. Less disruptive to traffic and causes less environmental impact compared to other construction methods.
3. Provide a less congested work place, particularly when compared to braced excavations.
4. There is no need to embed any structural element below the bottom of excavation as with soldier beams used in ground anchor walls.
5. Soil nail installation is relatively rapid and uses typically less construction materials than ground anchor walls.
6. Nail location, inclination, and lengths can be adjusted easily when obstructions (cobbles or boulders, piles or underground utilities) are encountered. On the other hand, the horizontal position of ground anchors is more difficult to modify almost making field adjustments costly.
7. Since considerably more soil nails are used than ground anchors, adjustments to the design layout of the soil nails are more easily accomplished in the field without compromising the level of safety.
8. Overhead construction requirements are smaller than those for ground anchor walls because soil nail walls do not require the installation of soldier beams (especially when construction occurs under a bridge).
9. Soil nailing is advantageous at sites with remote access because smaller equipment is generally needed.
10. Soil nail walls are relatively flexible and can accommodate relatively large total and differential settlements.
11. Measured total deflections of soil nail walls are usually within tolerable limits.
12. Soil nail walls have performed well during seismic events owing to overall system flexibility.
13. Soil nail walls are more economical than conventional concrete gravity walls when conventional soil nailing construction procedures are used.
14. Soil nail walls are typically equivalent in cost or more cost-effective than ground anchor walls when conventional soil nailing construction procedures are used.
15. Shotcrete facing is typically less costly than the structural facing required for other wall systems.