The truss is a framework consisting of rafters posts and struts which supports your roof.

Timber sizes for roof trusses. The important point to keep in mind when you use your truss calculator is that every truss calculation is completely unique and is based on the size of your roof and its specific dimensions. That means roof truss systems can bring nearly any conceivable roof design to life without blowing your budget including cathedral ceilings and cross gables. Temporary braces at all mid panels maximum 3000 mm apart but not required for creepers jacks hip trusses dutch hip girders and tg trusses with stations up to 3600 mm. As our name suggests timber roof trusses are central to our business.

All truss images are for visual aid only and may not truly represent the roof truss supplied or designed by your chosen supplier. We design a variety of timber roof systems to suit projects of every size from low to high set custom homes multi unit developments roof replacements renovations and extensions. Roof trusses are generally fabricated offsite reducing price and speeding up the construction of your roof frame. 600 timber thickness mm.

Most basic timber roof trusses timber dimensions are 90x35mm and start at strength grade mgp10 old grading called f5. Eastland truss timber s roof trusses are designed and manufactured using mitek systems to ensure compliance to bca and as 1720 and as 4440. Member size grade tc 1 4 4 7 97 tr26 bc 6 10 72 tr26 bc 10 2 72 tr26 wb 3 8 5 9 72 tr26 wb 4 8 4 9 72 tr26. Roof trusses provide support for the roof deck the framing and counteract wind load.

If the truss requires a bigger timber size due to the load it is to carry the bigger size is usually applied to the bottom chord first leaving the top chord and webs at 90x35mm. Eastland truss and timber manufactures trusses using non toxic termite protected hyne t2 blue pine timber. Timber roof trusses fixing bracing guidelines for timber roof trusses vic 03 8795 8888 nsw 02 8525 8000 qld 07 3861 2100 sa 08 8234 1326 wa 08 9412 3534 new zealand 09 274 7109 the timber roof trusses you are about to install have been manufactured to engineering standards. 100 natural timber is safe to handle and ages without decomposing into harmful toxins.

Use 70 x 35 f5 or mgp10 fixed with 2 65 nails or 1 65 screw per truss crossing for truss spacing not exceeding 1200mm.

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