Rafter span tables nz. They are aligned at the roof and run perpendicular to the ridge and top plate. Carpentry Squares - Framing Squares and Speed Squares for roof framing. Jun 6, 2013 ยท When selecting suitable rafters using NZS 3604:2011 Timber-framed buildings Table 10. For buildings where the design wind speeds are less, a multiplier is used to determine the permitted span for the given rafter size and spacing. Exceeding max panel span & Over length panels To exceed the spans indicated in the tables in this document, specific engineering design with rafters will be required. 2m more lengths spans available add 10% Application: Rafters A Rafter is one of a number of parallel members required to support roofing loads, via an overlying set of battens or purlins. The live loads considered in the tables are those used in NZS 3604:2011; Timber Framed Buildings. What next? Leave the roof pitch calculator and visit our home page. 140x45 span SG10 = 3. Roof Framing - How to design and build Shed and Gable roofs.
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