Flat Roof Roof Joist Span Calculator Uk

For pitched roofs flat roofs and ceiling joists.

Flat roof roof joist span calculator uk.

Surveyors and structural engineers utilise data from tables below to help calculate the correct size strength and centres of roof timbers for the required spans and loadings. Suitable for uk building regulation approval. Joists under each partition. These spans were calculated using our flat roof joist calculation engine.

Span calculator for wood joists and rafters also available for the android os. The full version allows any size. 1 enter joist details 1 1 span and joist spacing. This demo version is fixed at 1m clear span.

Span tables for flat roof joists to bs 5268 7 2 imposed loads of 0 75 kn m for maintenance and snow load are applicable where there is no permanent access no fixed ladder or staircase and most areas where the altitude does not exceed 100 metres refer to bs 6399 3. Size of joists mm clear span c16 joist m clear span c24 joist m 47 x 95 47 x 120 47 x 145 47 x 170 47 x 195 47 x 220 1 77 2 40 2 89 3 38 3 87 4 36 2 04 2 75 3 47 4 20 4 93 5 66 floor joists flat roof joists assumptions at 400mm centers supporting permanent load excluding self weight of joists up to 50kg m2. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. Usually 400 450 or 600mm but.

Surveyors span tables for designing roof rafters. This is the distance between joist centres. Also available for the android os. This span table is to the format and methodology given in bs 5268 7 2.

Flat roof joist calculator. These span tables are the equivalent of other industry standard span tables and are calculated to the same standards.