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How to design RCC steps with walls on it

 
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ramu_se
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Joined: 30 Oct 2017
Posts: 37

PostPosted: Wed Sep 22, 2021 3:45 am    Post subject: How to design RCC steps with walls on it Reply with quote

Dear All,

How to design the RCC waist slab flight with walls coming on the edge of the steps.
Here i have attached the image for your reference.
Kindly share the methods to design these steps with wall.

Thank you,
Ramu.



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vikram.jeet
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Joined: 26 Jan 2003
Posts: 3162

PostPosted: Wed Sep 22, 2021 5:23 am    Post subject: Reply with quote

STAIRS WAIST SLABS

1.0 Fligh2  need to rest on 9" th load bearing walls ,to be provided on opposite sides . In sketch only one wall is load bearing , but there is need to effect opposite wall from found level itself to support waist slab if flight 2  spanning along width of stair.
2.0 Flight 2 waist will have both upper and lower landings as cantilevered from width wise spanning sloping waist slab in longitudinal direction . Thus flight 2 sloping waist shall have top and bottom reinforcement as per design requirements.
3.0 flight 1 will be supported longitudinally , one end at GL footing and other at top by cantilevering out landing (fm flight 2 waist).

Loads from flight 1 will be transfered to flight 2 waist considering its only one meter strip in width span direction  to bear + it's own wt .
Similarly load from topmost cantilever flight to be transfered to sloping flight 2 , considering flight 2 strip of one meter .

Other option of providing + shaped wall at lower landing or Even T shaped wall , will suffice and side walls help to supports waist not required.
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