Domestic Floor Joist Calculator

Calculations to BS5268-2:2002

The beam span length is fixed for this demo version. The full version allows you to design beams of any size.

1 Enter Joist Details

This demo version is fixed at 1m clear span. The full version allows any size

Joist spacing

This is the distance between joist centres. Usually 400, 450 or 600mm, but any value can be used up to 610mm max

Automatically calculate sizes suitable for supporting the loads below

Enter a specific joist size

2 Dead load

Suspended ground floor with no partitions above, 0.25 kN/m²

Intermediate floor (first and 2nd floors etc.) with no partitions above, 0.5 kN/m²

Intermediate floor with lightweight timber stud partitions above, 0.75 kN/m²

Other

Quick and affordable Timber Beam Calculations in just minutes!