Rhs Roof Beam Span Tables

Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters. Keep in mind that these are maximums in other words shortening spans slightly will result in a more solid structure. The figures are based on quality materials.

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N1 to n3 duragalplus rhs as fioor beams bearers ddcm olume 3 january 2017 span tables design data scope this volume of the duragal domestic construction manual covers the design of duragalplus rhs bearers which conform to wind classifications of up to category n3.

Rhs roof beam span tables.

Spantec has prepared these tables for use by people skilled in the design and specification of the. The imposed uniformly distributed live load in the main span. Also see assumptions for table development. The beams gauge is indicated by the suffix i e.

Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. The tables below give maximum spans for rafters and beams. 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. 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. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. View joist rafter tables. Flat roof span tables allow for a maximum roof pitch of 5º.

This is set by the roof use you selected in the previous screen and cannot be modified. Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002. For each application a pdf download is available. Roof beams 20 verandah beams 22 garage roof.

You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. For lesser grades spans should be shorter. This ensures that an economical boxspan beam can be obtained for each individual project. Pitching beams 23.

Single span beams are beams supported at two points only. Loading conditions are detailed below. 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. Refer to sfpa s publication southern pine headers beams download in publications that includes all size selection and allowable load tables.

Continuous span beams are beams supported at three or more points along their length. Use recommended minimum roof pitches as specified by roof sheet supplier.