IPC Main Group
E21D 5/00 Lining shafts; Linings therefor
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- EARTH OR ROCK DRILLING; MINING
- Subclass:
- SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
Related Keywords
LINING(S) of mine galleries; LINING(S) of mine shaftsTUBBING for mine shafts
8 direct subcodes
Child Classifications
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- E21D 5/01 using prefabricated lining lowered into a hole filled with liquid or viscous mass
- E21D 5/012 Use of fluid-tight or anti-friction material on outside of, or between, lining layers
- E21D 5/016 Bearer curbs
- E21D 5/02 with wood
- E21D 5/04 with brick, concrete, stone, or similar building materials
- E21D 5/06 with iron or steel
- E21D 5/11 with combinations of different materials, e.g. wood, metal, concrete
- E21D 5/12 Accessories for making shaft linings, e.g. suspended cradles, shutterings