Column Load Takedown Calculator
Accumulated column load floor-by-floor from tributary area and storey count.
A ground-floor column in G+3 housing easily sees 700–900 kN service. Codes allow live-load reduction on multi-floor columns — the crowd never fills every floor at once.
Formula
Column Load Takedown Calculator is a free load takedown 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 Column Load Takedown Calculator
Accumulated column load floor-by-floor from tributary area and storey count. The calculation implements P = n_floors × (A_trib × q + self-weight) (IS 875 Part 2 cl. 3.2 (LL reduction)). A ground-floor column in G+3 housing easily sees 700–900 kN service. Codes allow live-load reduction on multi-floor columns — the crowd never fills every floor at once.
How to use Column Load Takedown Calculator
- 1Enter Tributary area per floor in m².
- 2Enter Floor load (DL+LL service) in kN/m².
- 3Enter Floors above this column.
- 4Enter Column+wall self weight per floor in kN.
- 5Read Service load, Factored (×1.5) instantly — no submit button needed.
- 6Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Column Load Takedown Calculator?
- ✓Implements the standard formula — P = n_floors × (A_trib × q + self-weight)
- ✓Reference cited on-page: IS 875 Part 2 cl. 3.2 (LL reduction)
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Column Load Takedown Calculator use?+
It computes P = n_floors × (A_trib × q + self-weight), per IS 875 Part 2 cl. 3.2 (LL reduction). The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
A ground-floor column in G+3 housing easily sees 700–900 kN service. Codes allow live-load reduction on multi-floor columns — the crowd never fills every floor at once.
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 Column Load Takedown Calculator 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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