Answer / a sahni

Let me know the earthquake zone & Exposure condition u r belonging ????
if it is zone III or above or exposure condition is other than mild or moderate then grade of concrete should be higher than M25.

Answer / ronak shah

yes, we do it. its depends upon designer. how to design the
building.

Answer / pranav panchal

Yes you can adopt M20 grade but for for M 20 grade your mix design & structure design must passes through all the critical conditions of the earthquake loads & other loads like wind, dead, live loads

If your structurer considered M20 then its OK

Answer / surya viswanadh

better not to

Answer / vicky4all

It Depends on
structural design
of the building.

Answer / manish kumar

no beacuse we used minimum M25 concrete in column

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