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Crack and Deflection
MPa fy = Material f'c = MPa
Crack for Section Under Axial Force and Bending Moment Ghali A., and Favre R., Concrete Structures: Stress and Deformations. Chapman & Hall, London. Reference:
tf = mm Flange bf = mm
d' = mm Top Rebars A's = mm2
M = kN.m N = Loading e0 = mm kN
v = mm Bottom Rebars Asb = As = mm2 mm2
b = mm h = Dimensions mm
Results Ie = fs = fc = Z = c = mm4 MPa N/mm MPa mm
Review Report


1. Limit Z for beams (w = 0.33mm, 0.4mm)
    a). Exterior exposure: [Z] = 25,000 N/mm
    b). Interior exposure: [Z] = 30,000 N/mm

2. Limit Z for slabs
    a). Exterior exposure: [Z] = 22,000 N/mm
    b). Interior exposure: [Z] = 27,000 N/mm

3. For epoxy coated reinforcement, Z = 1.2[Z]

4. Skin Reinforcement:

    a). Ask = 0.008 (or 0.01)Acs
     Acs - the area of concrete in strips along the exposed side faces
    b). Max. spacing = 200mm