WWilts Posted September 18, 2021 Share Posted September 18, 2021 Underslab drains already haunched & encased in concrete (lean mix). Covered by hardcore. Slab yet to be poured. Is reinforcement necessary to the parts of the slab directly above the underslab drains? Link to comment Share on other sites More sharing options...
Nickfromwales Posted September 18, 2021 Share Posted September 18, 2021 39 minutes ago, WWilts said: Underslab drains already haunched & encased in concrete (lean mix). Covered by hardcore. Slab yet to be poured. Is reinforcement necessary to the parts of the slab directly above the underslab drains? One for your structural engineer 1 Link to comment Share on other sites More sharing options...
Dave Jones Posted September 19, 2021 Share Posted September 19, 2021 On 18/09/2021 at 12:10, Nickfromwales said: One for your structural engineer correct. https://nhbc-standards.co.uk/5-substructure-ground-floors-drainage-and-basements/5-3-drainage-below-ground/5-3-8-durability/ another reason to use block and beam. Link to comment Share on other sites More sharing options...
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