Point Load on Slab Checker
Effective spread of a concentrated load through a slab and the local moment it adds.
Slabs are forgiving: a metre-plus of width conspires to carry that gym rack. But repeated rolling loads (pallet trucks) fatigue toppings — joints and edges are where they punch through.
Formula
Point Load on Slab Checker is a free point load slab for structural engineers, fabricators and site engineers — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Point Load on Slab Checker
Effective spread of a concentrated load through a slab and the local moment it adds. The calculation implements b_eff ≈ 0.6L + load width (IS 456 style); m = (PL/4)/b_eff (IS 456 effective width; concrete slab design texts). Slabs are forgiving: a metre-plus of width conspires to carry that gym rack. But repeated rolling loads (pallet trucks) fatigue toppings — joints and edges are where they punch through.
How to use Point Load on Slab Checker
- 1Enter Point load in kN.
- 2Enter Contact patch width in mm.
- 3Enter Slab thickness in mm.
- 4Enter Slab span in m.
- 5Read Effective width carrying load, Added moment per metre width instantly — no submit button needed.
- 6Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Point Load on Slab Checker?
- ✓Implements the standard formula — b_eff ≈ 0.6L + load width (IS 456 style); m = (PL/4)/b_eff
- ✓Reference cited on-page: IS 456 effective width; concrete slab design texts
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Point Load on Slab Checker use?+
It computes b_eff ≈ 0.6L + load width (IS 456 style); m = (PL/4)/b_eff, per IS 456 effective width; concrete slab design texts. The formula is displayed under the result.
What should I keep in mind when using this calculator?+
Slabs are forgiving: a metre-plus of width conspires to carry that gym rack. But repeated rolling loads (pallet trucks) fatigue toppings — joints and edges are where they punch through.
Can I use this for real structural design?+
It implements the exact textbook/code formula cited below the result and is ideal for sizing, checking and learning. Final designs should be verified by a qualified engineer against the full code with all load cases.
Is the Point Load on Slab Checker free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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