Rhs Roof Beam Span Tables

Boxspan comes in a range of varying beam sizes and gauges from 100 x 50 mm to 250 x 50 mm with base metal thickness bmt of 0 6mm to 1 0mm.

Rhs roof beam span tables.

Also see assumptions for table development. Refer to sfpa s publication southern pine headers beams download in publications that includes all size selection and allowable load tables. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Continuous span beams are beams supported at three or more points along their length.

Flat roof span tables allow for a maximum roof pitch of 5º. The tables below give maximum spans for rafters and beams. This ensures that an economical boxspan beam can be obtained for each individual project. For lesser grades spans should be shorter.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. The figures are based on quality materials. For each application a pdf download is available. The imposed uniformly distributed live load in the main span.

1 n1 to c3 duragalplus rhs as roof beams rafters under purlins strutting beams roof battens ceiling joists ddcm volume 1 february 2017 contents page foreword letter of certification duragalplus product specifications 2 span tables design data 3 duragalplus rhs shs as roof beams 4. Loading conditions are detailed below. Use recommended minimum roof pitches as specified by roof sheet supplier. Pitching beams 23.

Roof beams 20 verandah beams 22 garage roof. Spantec has prepared these tables for use by people skilled in the design and specification of the. Posts these span tables are designed for a minimum post size of 50 x 50 x 2 5mm up to a maximum height of 3 0m. Span for the purpose of using these tables span may be interpreted as the clear distance between supports measured along the beam.

Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Keep in mind that these are maximums in other words shortening spans slightly will result in a more solid structure. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads.

This is set by the roof use you selected in the previous screen and cannot be modified. The beams gauge is indicated by the suffix i e.