Staircase details of two storey residential building is given in the autocad 2D drawing file. In this file service stairs, main stairs details were given. Main stair layout at basement floor, main stair layout at ground floor, handrail details of main stair, spot details, handrail details of service stair, service stair layout at ground floor, service stair layout at first floor, service stair layout at penthouse floor has given in this drawing file. . Thank you for downloading the autocad file and other CAD program from our website.