IS 4880 : Part 4 : 1971 Code of practice for design of tunnels conveying water: Part 4 Structural design of concrete lining in rock

1. Scope

1.1 This standard (Part IV) covers criteria for structural design of plain and reinforced concrete lining for tunnels and circular shafts in rock mainly for river valley projects.

NOTE- The providont may, nevertheless, be used for design of any other type of tunnel, like railway or roadway tunnel, provided that all the factort peculiar to such project which may affect the design are taken into account.

1.2 This standard, however, does not cover the design of steel and prestressed concrete linings, tunnels in swelling and/or squeezing type of rocks, soils or clays and cut and cover sections.