Serviceability Calculator
Check serviceability requirements including deflection and cracking for concrete beams and slabs.
Member Properties
ft
in
in
PSI
sq in
sq in
k/ft
k/ft
k/ft
Total Deflection
0.606"
Allowable: 0.500" (L/480) | NG
Immediate Deflection
0.433"
Long-term Deflection
0.173"
Utilization
121.2%
L-T Multiplier
3.00
Section: Cracked
Ma = 125.00 ft-kip vs Mcr = 45.54 ft-kip
Section Properties:
Gross Moment Ig14 x10^3 in^4
Cracked Moment Icr5 x10^3 in^4
Effective Moment Ie6 x10^3 in^4
Modular Ratio n8.0
Neutral Axis c6.82"
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.