Analytical Study of Double Flight Stair Slab without Floor Landing

This paper presents an analytical analysis of double flight stair slab without floor landings with boundary condition fixed at extreme edges. The analysis is based upon finite element method using ANSYS software. The staircase specimen for one storey height of 3m, with mid landing height each at 1.5m from the floor and 100mm thick waist slab has been chosen for a horizontal projection of 2.475m attached with mid landings. The specimen has discretized in to 54 numbers of four noded structural shell elements (shell 181). The specimen has tested under incrementally applied uniformly distributed load over the complete area. Critical value of bending moment and deflection of support arrangement has been obtained. Variation in moments and deflections at critical locations, along the stair slab model has been presented in the graphical form.