Timber floor joists are still the most popular way of constructing suspended floors (although for suspended ground floors, concrete beam and block floors are becoming more widely used).

If the floor joists are just supporting the floor construction then they can be easily designed using load/span tables.

However if the joists are also supporting partition walls, or the spans are unusually long, or the loadings are unusually heavy, then the load/span tables won't cover these situations.

Our structural calculations for floor joists will cover any situation which is likely to arise in a residential property.

We need the following information to design timber floor joists:

the span of the joists

details of any unusual loadings

details of any partition walls the joists have to support

details of any restrictions on the maximum depth of the joists

Design information

All design work is carried out in accordance with BS5268 (The structural use of timber).

The calculations provided will be suitable for Building Regulation approval.