We usually opt for the 35mm thickness in timber when designing.
Timber roof trusses dimensions.
If you re building rafters and aren t sure where to start when determining the length of your lumber you re in the right place our rafter stock size calculator shows you how long your rafters should be so you ll know what you need in terms of framing lumber dimensional lumber studs and more.
Just enter the dimensions of the roof rise and run to get started.
The truss is a framework consisting of rafters posts and struts which supports your roof.
The pros of using roof trusses instead of stick framing.
0 524 kn m ceiling dead load.
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.
360 mm general truss information.
Here are the pros of trusses.
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 room size will vary depending on the width and slope of the truss.
Gable room in attic trusses provide an economical way to add extra living space to your home or garage.
But 99 of the time a roof truss is going to give you so much more.
Sure there may be an instance where stick framing is your only option and that is understandable.
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.
Standard roof truss general load settings.
Click to add item 24 spreadweb residential roof truss 5 12 pitch 87 to the compare list.
Our timber wood roof trusses are made from the strongest grade of timber tr26 grade timber.
0 785 kn m snow load.
Pitched roof timber sizes.
The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction.
Shop our wide selection of stock and custom roof trusses to complete your building project available in a variety of styles and sizes.
All the figures are based on roofing tiles or slates laid on timber laths over sarking felt.
Member size grade tc 1 4 4 7 97 tr26 bc 6 10 72 tr26 bc 10 2 72 tr26 wb 3 8 5.
0 250 kn m ceiling live load 0 250 kn m tank load 0 450 kn max tile batten centres.
A gambrel room in attic truss also provides extra living space while giving your roof a barn like appearance.
