Depth Of Floor Joists Uk

Floor joists ceiling joists flat roof joists rafters purlin span tables for domestic floor joists to bs 5268 7 1 note.

Depth of floor joists uk.

True floor joist span calculations can only be made by a structural engineer or contractor. Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1. Live load is weight of furniture wind snow and more. The floor joists comprise the bulk of the floor thickness.

The following table gives details of allowable spans and spacing between joists for the most common timber sizes used in floor construction. Joists are to have minimum end bearing of 40mm. The actual width of those boards however isn t identical to what their name implies. This means that some values are slightly more conservative than span tables from other sources if those do not include the.

With extensive timber engineering and roof truss experience scotts of thrapston has partnered with wolf systems to offer the easi joist metal web floor system. 2 grade of douglas fir are indicated below. Standard floor joists are usually 2 by 10 or 2 by 12 dimensional boards installed on edge. Note this only works in imperial and is for domestic loadings only.

1 psf lb f ft 2 47 88 n m 2. Therefore joist depth is 8 inches. A 2 by 10 joist is really only 9 1 4 inches wide and a 2 by 12 is only 11 1 4 inches wide so depending upon. The use of engineered floor systems is growing in the uk replacing traditional solid timber floor joists or concrete flooring.

The floor joist span tables are based on the loadings given in the amended version of bs 6399 1 which is an imposed load of either a uniformly distributed load of 1 5 kn m or a concentrated load of 1 4 kn. The weight of the timber floor itself consists of the timber joists the plasterboard ceiling underneath it except for suspended timber ground floors the floorboards and the nails or screws used to fix both of the aforementioned coverings. 1 ft 0 3048 m. Eg joists spans 14 ft wall to wall dived by 2 1 8.

Dead load weight of structure and fixed loads 10 lbs ft 2. Maximum floor joist span for no.