Standard Roof Truss Sizes Australia

We also supply e battens at 65mm x 35mm in 6 3 metre lengths to match truss and rafter spacing.

Standard roof truss sizes australia.

This is the distance between trusses. Although there is no single standard roof pitch used on all sloped roofs factors such as roofing materials and local climate help to determine the appropriate range of pitches for a given building. Roof pitch is a measurement of a roof s slope expressed as a ratio. Minimum size of temporary ties truss spacings for top chords for bottom.

The standard roof truss spacing is 2. This is an exciting product made from structural laminated veneer lumber lvl that meets the as nzs4357 standard. A gambrel room in attic truss also provides extra living space while giving your roof a barn like appearance. You will also incur additional costs because it is much harder to deck and shingle a roof that is 12 12 pitch versus a 4 12 roof.

Using the standard 90x35mm looks a bit flimsy so using bigger sizes adds to the aesthetics. Roof trusses can also be designed to have bigger sizes on all the members of the truss too if required. This guide is based on australian standard as4440 installation of nailplated timber roof trusses. They are also engineer certified to meet as 1684 2 2010 and wind loading requirements up to n4.

Roof trusses are capable of supporting service loads from heating units air conditioned units hot water service etc. 1 4 services 1 4 1 general. Gable room in attic trusses provide an economical way to add extra living space to your home or garage. Provided the design takes them into account.

The room size will vary depending on the width and slope of the truss. If you have any doubts about using or interpreting the guide please do not hesitate to contact your truss fabricator or multinail australia for advice and assistance. This table is considerably more useful that the one that was in the previous 1990 edition of the regulations as not only maximum truss spans are indicated but also the allowable and recommended pitch of the roof and the member sizes and grades of timber that are specified in sans 1783 2. The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases.

The guide is intended to be used only for roof trusses supplied by accredited.