Work out load combination instantly with clear inputs, formula shown and shareable results.
Limit state design checks several factored combinations because different load patterns govern different members. The four evaluated here are 1.4 D, 1.2 D + 1.6 L, 1.2 D + 1.0 L + 1.0 W and 0.9 D + 1.0 W, the last of which matters for uplift and overturning where dead load is a stabilising rather than a destabilising effect.
Strength combinations
1.4 D; 1.2 D + 1.6 L; 1.2 D + 1.0 L + 1.0 W; 0.9 D + 1.0 W
Preliminary estimate only. Load factors and combinations must be taken from the design code adopted for the project.
1.4 D; 1.2 D + 1.6 L; 1.2 D + 1.0 L + 1.0 W; 0.9 D + 1.0 W. Limit state design checks several factored combinations because different load patterns govern different members.
When dead load resists the action being checked, using its full value would be unsafe if the real weight is lower than assumed. The 0.9 factor is the counterweight-minimum case.
This calculator takes 3 inputs: Dead load effect, Live load effect, Wind load effect. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.