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Material wfa = cal / gm CF = EF = HH = ksi f'c = psi lb / yd3 wc = lb / yd3 cm2 / gm cement type
Reinforcement for Mass Concrete on Grade
Rebars w = sb = dc = in. in. in.
Required Reinforcement Ab = in2 / ft
Temperatures Tp = Tb = TA = F F F F TM =
Geometry L = B = ft. ft. ft. ft. H = h = tw = in.

This function is to calculate the reinforcement required for limiting crack widths caused by
volume change due to thermal changes.

CT = 5 x 10-6 / F

Assume: wood formworks are provided at four sides of slab.

Default Heat of Hydration in 28 days (HH):
cement I,   87 Calories/gm;   cement II,   76 Calories/gm
cement III,   105 Calories/gm;   cement IV,   60 Calories/gm

Default Cement Fineness (CF):
cement I,   1790 cm2/gm;   cement II,   1890 cm2/gm
cement III,   2030 cm2/gm;   cement IV,   1910 cm2/gm

F = 1.6 C + 32

Reference:
ACI207.2R   Effect of Restraint, Volume Change, and Reinforcement on Cracking of Mass Concrete

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