Hi engineers, I am using SAFE V12 for raft design, I have a trouble with punching ratio under some columns so I draw drop slab around these columns, and according to this recommendation (https://wiki.csiamerica.com/display/safe/Modeling+slabs+with+variable+thickness%2C+loading+and+soil+subgrade++modulusto ) which advice users to draw the drop before the constant thickness mat i did that, but still I have failure in punching and there was no difference in the ratios before and after the use of drop. what do recommend in such situation, how can I let SAFE consider that thickening ?

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Mat footing thickened under columns

Thread starter amghma
Start date May 11, 2016

Status: Not open for further replies.

May 11, 2016

amghma

Structural

Hi engineers,

I am using SAFE V12 for raft design, I have a trouble with punching ratio under some columns so I draw drop slab around these columns, and according to this recommendation
(

https://wiki.csiamerica.com/display...ickness,+loading+and+soil+subgrade++modulusto

)
which advice users to draw the drop before the constant thickness mat i did that, but still I have failure in punching and there was no difference in the ratios before and after the use of drop.

what do recommend in such situation, how can I let SAFE consider that thickening ?