Roof Truss Dimensions Uk

Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs.

Roof truss dimensions uk.

600 timber thickness mm. To find out more about our roof trusses call our team on. Square the result obtained in step 1. 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.

To use the truss form existing roof dimension calculator. The following tables give details of the allowable spans and spacing for some of the more common timber sizes used in traditional roofing construction. Enter your existing heel size or rafter size. 35mm standard roof truss.

This is the minimum length of the outer board of your roof truss. This could be for fink trusses in a house construction or queenpost trusses for a garage. Weather you re building a shed roof or adding a dormer to your second story it is important to choose the proper size rafter. Enter two of the span height pitch fields.

Pitched roof timber sizes. The tool will calculate the missing field. We usually opt for the 35mm thickness in timber when designing standard roof trusses. The standard roof truss used for the majority of new build houses across the uk.

Add it to the square of the result obtained in step 2. These trusses can also be used for garages and extensions as well as self build projects. Meanwhile the 46mm thickness option is used for attic trusses due to fire regulation guidelines. These trusses are designed as attic style with larger sections of timber to support additional loadings which allow people to live within the truss zone.

There are several variables to consider when determining the proper rafter size. The truss is a framework consisting of rafters posts and struts which supports your roof. 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. 01706 212 238 northern 01785 282 833 midlands northern office.

While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses. All the figures are based on roofing tiles or slates laid on timber laths over sarking felt. Adding 4 41 ans 1 44 gives 5 85 and the square root of 5 85 is 2 42 8 06 feet. These trusses are used when habitable space is required within the room zone.