Roof Truss Timber Sizes

All the figures are based on roofing tiles or slates laid on timber laths over sarking felt.

Roof truss timber sizes.

This is the right way to fix truss clips connecting the rafter and. 0 75 kn m snow load. 35 timber size information. Standard roof truss general load settings.

Imposed loads roof snow load and short term point load altitude not exceeding 100m. 600 timber thickness mm. 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. 0 250 kn m ceiling live load 0 250 kn m tank load 0 450 kn max tile batten centres.

Shop our wide selection of stock and custom roof trusses to complete your building project available in a variety of styles and sizes. The cost of roof trusses. The tr26 grade timber that we sustainably source is in accordance with bs en 14081 kiln dried and planed all round. A timber roof truss is a structural framework of timbers designed to bridge the space above a room and to provide support for a roof trusses usually occur at regular intervals linked by longitudinal timbers such as purlins the space between each truss is known as a bay.

Structural calculations for timber joists timber beams glulam beams flitch beams using the latest design codes. 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. The truss is a framework consisting of rafters posts and struts which supports your roof. Pitched roof timber sizes.

360 mm general truss information. Automatically calculate suitable rafter sizes enter a specific rafter size 1 3 timber strength. The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction. Rafters have a tendency to flatten under gravity thrusting outwards on the walls.

Member size grade tc 1 4 4 7 97 tr26 bc 6 10 72 tr26 bc 10 2 72 tr26 wb 3 8 5. A project of this nature would typically cost 982 80 as indicated by our roof truss instant quote estimator below. 0 524 kn m ceiling dead load. Tr26 grade timber has been a cornerstone product of timber roof truss manufacturing for a number of years and therefore is the only kind of timber that we use and provide for our customers.

Click to add item 26 spreadweb residential roof truss 6 12 pitch 87 to the compare list.