RSJ Span Table Lookup

Domestic floor planning sizes by clear span. Use for budgeting, then get engineer calculations.

RSJ Span Table Lookup

Pick a clear span and load band to see a planning section from our domestic span table. Estimates only — confirm with a structural engineer.

Lookup uses nearest table row between 2.5 m and 6.0 m

Full table (typical column highlighted in tool above)

SpanLightTypicalHeavy
2.5 m152×89×16178×102×19203×133×25
3.0 m178×102×19203×133×25203×133×25
3.5 m178×102×19203×133×25203×133×30
4.0 m203×133×25203×133×25 / 254×146×31254×146×31
4.5 m203×133×30254×146×31254×146×37
5.0 m254×146×31254×146×37 / 305×165×40305×165×40
5.5 m254×146×37305×165×40305×165×46
6.0 m305×165×40305×165×46 / 356×171×45356×171×51