IS 1200 Series Download Links IS 1200 Series: Download Links IS 1200 (Part 1): 1992 – Earthwork IS 1200 (Part 2): 1974 – Concrete Works IS 1200 (Part 3): 1976 – Brickwork IS 1200 (Part 4): 1976 – Stone Masonry IS 1200 (Part 5): 1982 – Formwork IS 1200 (Part 6): 1974 – Roofing IS 1200 (Part 7): 1978 – Woodwork and Joinery IS 1200 (Part 8): 1993 – Steel Reinforcement and Steel Sections IS 1200 (Part 9): 1973 – Structural Steel Work IS 1200 (Part 10): 1973 – Carpentry and Joinery IS 1200 (Part 11): 1977 – Flooring IS 1200 (Part 12): 1976 – Plastering and Pointing IS 1200 (Part 13): 1994 – Whitewashing, Painting, and Polishing IS 1200 (Part 14): 1984 – Pipeline Sewerage IS 1200 (Part 15): 1987 – Glazing IS 1200 (Part 16): 1979 – Water Supply, Sanitary Installations, and Draina...
Procedure for Soil Nailing (As per IS 14490:1997)
-
Site Investigation & Design
- Conduct geotechnical investigation (IS 1892:1979) to determine soil properties.
- Nail length: 0.7 to 1.0 times excavation height.
- Nail spacing: Generally 1.0 m to 2.0 m horizontally & vertically.
- Inclination: 10°–20° below horizontal.
-
Excavation
- Excavation should be carried out in stages of 1.0–2.0 m depth.
- Each stage should be stabilized with nails before moving further.
-
Drilling of Nail Holes
- Diameter of hole: 100–200 mm (IS 14490 recommends 100–150 mm).
- Holes drilled using rotary percussion rigs with compressed air or water flush.
-
Insertion of Reinforcement (Nails)
- Nails generally consist of TMT bars (as per IS 1786) or steel tendons.
- Centralizers to be used to maintain cover of ≥ 25 mm grout thickness.
-
Grouting
- Grouting material: Cement slurry (IS 456 & IS 3370).
- Water–cement ratio: 0.4–0.5.
- Pressure grouting to ensure complete filling.
-
Shotcrete / Facing
- Temporary or permanent facing provided by shotcrete (IS 9012:1978), wire mesh, or concrete panels.
- Minimum thickness: 75 mm (temporary) to 150 mm (permanent).
-
Drainage
- Weep holes or geosynthetics to relieve pore water pressure behind the nailed wall.
-
Testing of Nails
- Proof load tests & verification tests must be conducted on selected nails (as per IS 14490).
- Test load generally 1.25 to 1.5 times the design load.
-
Monitoring
- Regular monitoring of wall deflection and soil movement during and after construction.
✅ Key Reference IS Codes:
- IS 14490:1997 – Soil Nailing Guidelines
- IS 456:2000 – Plain & Reinforced Concrete Code
- IS 1786:2008 – High Strength Deformed Steel Bars
- IS 9012:1978 – Shotcreting Practice
- IS 3370 – Grouting Works
Comments