Beam Deflection Limit Checker (L/360)
Check computed deflection against the code serviceability limits L/240, L/360.
Deflection limits protect plaster and perception, not safety โ a beam can pass strength and still crack every tile on it. IS 456: span/350 or 20 mm.
Formula
Beam Deflection Limit Checker (L/360) is a free deflection limit for structural engineers, fabricators and site engineers โ 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 Beam Deflection Limit Checker (L/360)
Check computed deflection against the code serviceability limits L/240, L/360. The calculation implements limit: live-load ฮด โค L/360 (finishes), total โค L/240 (IS 456 cl. 23.2; IBC Table 1604.3). Deflection limits protect plaster and perception, not safety โ a beam can pass strength and still crack every tile on it. IS 456: span/350 or 20 mm.
How to use Beam Deflection Limit Checker (L/360)
- 1Enter Computed deflection in mm.
- 2Enter Span in m.
- 3Read Actual ratio L/ฮด, L/360 limit, L/240 limit instantly โ no submit button needed.
- 4Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Beam Deflection Limit Checker (L/360)?
- โImplements the standard formula โ limit: live-load ฮด โค L/360 (finishes), total โค L/240
- โReference cited on-page: IS 456 cl. 23.2; IBC Table 1604.3
- โOne-click SI โ Imperial toggle โ values convert in place, physics stays in SI
- โBuilt-in engineering verdict flags out-of-range results instantly
- โRuns entirely in your browser โ nothing uploaded, free forever
Frequently asked questions
What formula does the Beam Deflection Limit Checker (L/360) use?+
It computes limit: live-load ฮด โค L/360 (finishes), total โค L/240, per IS 456 cl. 23.2; IBC Table 1604.3. The formula is displayed under the result.
What should I keep in mind when using this calculator?+
Deflection limits protect plaster and perception, not safety โ a beam can pass strength and still crack every tile on it. IS 456: span/350 or 20 mm.
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 Beam Deflection Limit Checker (L/360) free to use?+
Yes โ 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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