Traditional Rafter And Purlin Roof Construction

They span from the wallplate to the ridge board providing a platform for the underlay battens and tiles.

Traditional rafter and purlin roof construction.

Note that these are normally only required to trussed rafter roofs and not for traditional purlin and rafter roof construction. Purlin plates are beams which support the mid span of rafters and are supported by posts. The overall construction of a traditional cut roof is to ensure that the load of the roof is evenly transmitted to the walls below. The rafters are the main load bearing elements of the roof.

9 complex purlin roofs. 11 some examples of older traditional roofs. All the figures are based on roofing tiles or slates laid on. These are normally only required to trussed rafter roofs and not for traditional purlin and rafter roof construction.

The term plate means a major horizontal supporting timber. Pitched roof construction. A common arrangement is a rafter and purlin system which combines purlins and rafters. Building control guidance note purlin and rafter roofs timber sizes and construction details.

A purlin plate in wood construction is also called an arcade plate in european english under purlin and principal purlin. Purlin plates under purlin principal purlins and common purlins. Parts of a traditional queen post roof truss. Traditional or cut roofs usually comprise a series of sloping timbers rafters fixed to a wall plate at their feet and a ridge board or possibly a wall plate at their head.

A cut roof this is the traditional method of cutting the timber on site and building up the roof using rafters ridge boards joists and purlins etc the exact details being determined by the size of roof size of timbers etc. Sizes used in traditional roofing construction. Purlin plates in wooden construction. 8 simple purlin roofs.

There are two basic methods of pitched roof construction. The roof support system is a ridgepole and either rafters which run perpendicular from the top of the walls to the ridge or purlins which run parallel to the ridge. In architecture structural engineering or building a purlin or historically purline purloyne purling perling is any longitudinal horizontal structural member in a roof except a type of framing with what is called a crown plate. 10 complex new roofs.

7 simple traditional roofs. The longitudinal horizontal beam that is sitting on a post or the principal rafter of a truss and used to support common rafters. Exposed rafters are a feature of some traditional roof styles.