SLABLESS STAIR DESIGN
Span = le =
Riser "R" =
Tread "T" =
Long term defln coeff " k "
Width of Stair or landing "b"
Tentative thickness of steps l/28
Thickness of riser or Tread "t"
Eff. Depth "d"
Weight of reinforced concrete "γrc"
Strength of concrete "fc"
Strength of steel "fy"
Clear cover to concrete
Flexure strength reduction factor
Shear strength reduction factor
Modulus of Elasticity of steel "Es"
Modulus of Elasticity of concrete "Ec"
Modular Ratio "n = Es/Ec"
Self Weight of steps
Total dead Load "Udl"
Total service Load "tsl"
Total Ultimate Load "wu"
25 Nov 2017
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