Load Combinations Calculator

Combine dead, live, roof live/snow/rain, wind, and seismic loads into ASCE 7 LRFD (Strength Design) and ASD (Allowable Stress Design) combinations. Enter loads in any consistent unit (e.g. all in kips, or all in kips/ft) - the governing combination can then be carried forward into Beam Analysis, Column Buckling, or Base Plate Connection via a "Continue with these values" link.

Standard used on this page: ASCE/SEI 7-22, Chapter 2 (Combinations of Loads) · Section 2.3.1 (LRFD) · Section 2.4.1 (ASD).
This tool covers the basic gravity/wind/seismic combinations only, with the largest of roof live (Lr), snow (S), or rain (R) applied - it does not cover net uplift checks, snow drift, unbalanced snow, or combined seismic horizontal/vertical components. For anything beyond preliminary sizing, a full ASCE 7 combination check by a licensed engineer is required.
Only the largest of Lr, S, and R is used per combination - they don't stack.
This calculator provides preliminary, indicative structural calculations only, intended to assist with initial sizing and understanding. It is not a substitute for assessment by a qualified structural engineer, and cad-steel.com accepts no responsibility for its use in any final design.