IS 4410 : Part 20 : 1983 Glossary of terms relating to river valley projects: Part 20 Tunnels
| UDC 627.842 : 001.4 | WRD 14 |
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| Reaffirmed 2020 |
1. Scope
1.1 This standard covers the definitions of terms relating to tunnels. However, this standard does not cover terms relating to tunnel equipments and geology.