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vikram.jeet
General Sponsor
Joined: 26 Jan 2003
帖子:3699
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 Posted: Tue Sep 13, 2022 3:38 pmPost subject: Re: Design of Slab on Grade for Connex structure above it. |
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| spsvasan wrote: |
Please check whether subsoil is swelling shrinking soil. It can move the building up and down. Even if the structure is not affected, the service connections, especially sanitary lines, can give some problem
S.P.Srinivasan |
Yes , it very sane viewpoint from Er SPS.
Black cotton / expansive soils need to be replaced by good earth / sand fill preferably in entire area , which may be costly . Separation from exp soil can be achieved by creating a Sand separation layer on sides and bottom of foundations . Reference can be made to NBC where protection of grade beams from exp soils is shown. |
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vikram.jeet
General Sponsor
Joined: 26 Jan 2003
帖子:3699
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| Posted: Wed Sep 14, 2022 3:28 amPost subject: |
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Expansive soils :
Service lines are affected due to such soils . Here also it is better to use more flexible pipes like HDPE for sewerage and storm water lines. Trenches in which these pipes are laid need to be backfilled with sand/ sand+good earth fill. |
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karansohal875
SEFI Member
Joined: 03 Apr 2020
Posts: 6
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| Posted: Fri Sep 16, 2022 3:29 amPost subject: |
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| Thanks Vikram.jeet and Spsvasan sir for your knowledgeable feedback. I am working on it and will discuss any further queries. |
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