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Calculation of Crack Width (ACI 224R-01 & ACI350M-06)

Materials Properties

Concrete Comp. Strength (f′_c) MPa

Reinf. yield strength (f_y) MPa

Reinf. modulus of elasticity (E_s) MPa

Conc. modulus of elasticity (E_c) MPa

Density of concrete (w_c) kg/m³

Modulus of rupture red. factor

Section Properties

Section Width (B) mm

Section Height (H) mm

Tension Steel

Number of steel bars (n_t) bars

Diameter of steel bar (d_t) mm

Cover to center of tension bars (c_t) mm

Cover to closest tension bar (a_t) mm

Spacing between bars c/c (S) mm

Compression Steel

Number of steel bars (n_c) bars

Diameter of steel bar (d_c) mm

Cover to center of comp. steel (c_c) mm

Applied force

Applied flexural service moment (M_a) kN·m

Maximum Allowable Crack Width

Exposure Condition

W_cr(max) mm

Max. Allowable Steel Stress

User Defined: MPa

Checks (ACI 224R-01)

Maximum diameter for high bond bars

Maximum bar spacing for high bond bars