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Excessive Cracking Problem in ETABS
In ETABS, my slab shows excessive cracking under service load. What could be wrong?
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1 Reply
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Excessive slab cracking in ETABS often comes from incorrect cracked section modifiers. By default, ETABS uses gross stiffness, which underestimates deflection. For concrete slabs, set m11 and m22 = 0.35, and for beams, set EI = 0.35–0.5Ig as per ACI/Eurocode. Also check that load combinations are set to serviceability limits (not just ultimate).
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