1. Department of Civil Engineering,
SOIL NAILING
Dr. A.K.Chaudhary
Assistant Professor
Department of Civil Engineering,
NIT, Jamshedpur

2. INTRODUCTION
Soil nailing is a technique used to reinforce and strengthen existing ground
Soil nailing consists of installing closely spaced bars into a slope or excavation as construction proceeds from top down
The grouted nails increases shear strength of overall soil mass.

3. TYPES OF SOIL NAIL
Screw anchor soil nail
Grouted soil nail

4. PROCEDURE OF SOIL NAILING
Excavate small cut
Drill hole for nail
Install & grout nail
Place drainage strips, initial shotcrete layer & install bearing plates
Repeat process to final grade
Place final facing on permanent walls

6. IDEAL CONDITIONS FOR SOIL NAILING
Height of excavation
Excavation Face Inclination
Type of soil
Nail length
Nail inclination
Nail diameter
Grouted hole diameter

7. APPLICATIONS Landslide Remediation Railway embankments
Roadway widening under existing bridges
Stabilizing of existing retaining walls
Highway embankments and cuttings

9. ADVANTAGES Cost Time Applicable in almost all type of soils
Construction equipments
Performance
Construction flexibility
Environmental and aesthetic considerations

10. LIMITATIONS Temporary stand-up time Excavation below the water level
Excavation in soft clay.

11. COMPARATIVE STUDY OF SOIL NAILING AND REINFORCED SOIL
Soil properties
Method of installing reinforcing elements
Construction process
Facing
Inclination of reinforcing elements

12. DESIGN STEPS Feasibility Assessment Internal stability
External stability

13. TYPICAL CROSS SECTION OF SOIL NAILED WALL

14. CONCLUSION
Soil nailing is a potential solution of landslide problems as it is economical and also applicable in seismic zones.
It can solve the problem of residential area up to a great extent.
It can be used in wide soil types.

15. THANK YOU !!!!!!