Steel Roof Truss Span Table Australia

Use recommended minimum roof pitches as specified by roof sheet supplier.

Steel roof truss span table australia. Safe roof purlins spans. Roof load width rlw and floor load width flw can be determined from as1684 or from the images below. From span table c the maximum allowable single span is 2160mm. High pressure zones kl 1 5 and 2 0 included.

It contains span tables covering various primary and secondary beam spans with common design floor loadings. Spacing span note hopleys trusses this table may also be used for wind uplift to a maximum of 0 4 kpa with suitable lateral restraints. It is intended that these tables will be used by engineers to assist in the preliminary design. The information in this guide can be used for the design of sub floors second storey floors and a number of roof types and beams including lintels.

Max roof span allowed 12m. 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. Here wind load governs ie in excess of 0 4 kpa the span shall be reduced. The imposed uniformly distributed live load in the main span.

Appendix c span tables c 1 introduction this appendix has been taken from the onesteelpublication design note no. Spacing should be interpreted as the centre to centre distance between adjacent parallel members. Roof truss span tables alpine engineered products 15 top chord 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 bottom chord 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2 12 24 24 33 27 27 37 31 31 43 33 33 46 2 5 12 29 29 39 33 33 45 37 38 52 39 40 55 3 12 34 34 46 37 39 53 40 44 60 43 46 64 3 5 12 39 39 53 41 44 61 44 50 65 47 52 70. Spantec has prepared these tables for use by people skilled in the design and specification of the.

Cpe 0 9 and cpi 0 2. Cleated or bracketed fixing only no flange bolting. This is set by the roof use you selected in the previous screen and cannot be modified. Flat roof span tables allow for a maximum roof pitch of 5º.

Step 4 assume the wind classification for the area is n1 and the roofing profile is stramit corrugated cladding 0 48mm bmt thickness in a single span configuration. Design of single span rafters in roofs in houses office buidlings schools and other structures. Loads are calculated in accordance with table 3 1 of as nzs 1170 1 2002. Reading off the empty under table with h 5m hc 2 5m span table c will be used to determine the spans.

The safe spans below are suitable for sheds and class 1 structures with the following assumptions. No provision has been made for the 1 3kn concentrated load. Required size for a given span. Where joist ends have rigid connections or are over multiple.