Soil nailing is a technique used to reinforce and strengthen existing ground by installing closely spaced reinforcement bars into a slope or excavation from top to bottom as construction proceeds. There are two main types of soil nails: screw anchor and grouted. The process involves excavating a small cut, drilling holes for nails, installing and grouting the nails, adding shotcrete and drainage strips, and repeating layers until the final grade is reached. Soil nailing is cost effective and can be used in a variety of soil types for applications like landslide remediation, roadway widening, and stabilizing retaining walls.

1. 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 !!!!!!