Question

A dog legged staircase in RCC is to be designed from ground floor to upper floors for an apartment building. The floor to floor height is 3M.The staircase is to be provided with suitable M.S. railing. Draw plan of the staircase from Ground to first floor showing both flights with all RCC elements. Draw detailed section through first flight showing all reinforcement details. Scale 1:20.

Answer 1

It is a dog-legged staircase

Floor to floor height =3.2m

Height/flight =(3.2/2)=1.6m

Assume Riser =160mm

Tread =250mm

No. of riser in one flight =(1600/160)=10 Nos.

No. of tread in one flight =R−1=10−1=9