Maximum Floor Live Load Capacity – Calculate Easy

• Allowable extreme fiber stress in tension (in psi or kPa)

• (Assumed to be 1/2 flexural strength)

• Thickness of slab (in inches or mm)

• Modulus of subgrade reaction (in pci or MPa/m)

• Modulus of elasticity(in psi or kPa)

  (assumed to equal 4000000 psi or 27579028 kPa)

•  

• Maximum Allowable Stationary Live Load(in psf)

  

Formula:

w = 257.876s ( kh / E ) ^ 0.5

Where,

     w = Maximum Allowable Stationary Live Load,

     k = Modulus of subgrade reaction,

      h = Thickness of slab,

      s = Allowable extreme fiber stress in tension,

      E = Modulus of elasticity.

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