Lining with building materials (E21D11/02, E21D11/14 take precedence )

Full Title

Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling (E21D15/00 - E21D23/00 take precedence; specially for shafts E21D5/00; ; lining pressure water galleries, linings therefor E02B9/06) > Lining with building materials (E21D11/02, E21D11/14 take precedence )

Child Classifications

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• E21D 11/05 using compressible insertions
• E21D 11/06 with bricks
• E21D 11/08 with preformed concrete slabs
• E21D 11/10 with concrete cast in situ; Shuttering or other equipment adapted therefor
• E21D 11/12 Temporary supports for use during building ; Accessories