To calculate spans for ground floor bearers supporting walls of a two storey construction the joist span shall be taken as the maximum of second storey and ground floor joist spans.
C purlin floor joist span tables.
Design specification data section z or c thickness mm yield stress mpa mass kg m 75 95 0 95 550 1 26 75 12 1 2 500 1 59 75 15 1 5 450 1 97 100 10 1 0 550 1 77 100 12 1 2 500 2 10 100 15 1 5 450 2 61.
Span tables for domestic floor joists to bs 5268 7 1 note.
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Bearer the joist span shall be taken as the average length of the joists connected to the bearer.
Conventional joist over bearer systems see open link in same page tables 3 4 2 1 and open link in same page 3 4 2 2 for acceptable sizes and spacings.
Engineered purlin metal mart offers a complete line of engineered purlin material.
The maximum ground floor bearer spans are.
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Available in cee or zee shape red oxide primed or galvanized 16 14 or 12 gauge sizes from 4 up to 12 flange widths of 1 1 2 up to 4 cut to your specified lengths hole punching available load tables available for all material.
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This means that some values are slightly more conservative than span tables from other sources if those do not include the amended guidance.
Also available for the android os.
Where purlin spans are unequal between supports each purlin should have 6 25 of each adjacent span added not 6 25 of that purlin s span.
Purlin load tables are valid up to and including 25 roof slopes.
Sales speedfloor co nz po box 5420 wellesley st auckland new zealand www speedfloor co nz the speedfloor steel joist span table is.
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Span calculator for wood joists and rafters also available for the android os.
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Z and c15015 purlin span table single span span inward load outward load deflection.
Has been derived by calculation in accordance with bs en1993 1 3.
Tables are based on a deflection limit.
Our floor joist span tables are based on loadings given in the newer amended version of bs 6399 1.
Load table technical details for our full range of purlins systems for the construction and manufacturing industries.
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