8 simple purlin roofs.
Traditional rafter and purlin roof construction.
Pitched roof construction.
They span from the wallplate to the ridge board providing a platform for the underlay battens and tiles.
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.
By supporting the rafters they allow longer spans than the rafters alone.
Purlin plates in wooden construction.
11 some examples of older traditional roofs.
Purlin plates under purlin principal purlins and common purlins.
There are three types of purlins in wood construction.
This is the right way to fix truss clips connecting the rafter and wall plate.
Sizes used in traditional roofing construction.
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.
A purlin plate in wood construction is also called an arcade plate in european english under purlin and principal purlin.
A common arrangement is a rafter and purlin system which combines purlins and rafters.
Parts of a traditional queen post roof truss.
All the figures are based on roofing tiles or slates laid on.
The longitudinal horizontal beam that is sitting on a post or the principal rafter of a truss and used to support common rafters.
Building control guidance note purlin and rafter roofs timber sizes and construction details.
Note that these are normally only required to trussed rafter roofs and not for traditional purlin and rafter roof construction.
The rafters are the main load bearing elements of the roof.
There are two basic methods of pitched roof construction.
9 complex purlin roofs.
Purlin plates are beams which support the mid span of rafters and are supported by posts.
Exposed rafters are a feature of some traditional roof styles.
These are normally only required to trussed rafter roofs and not for traditional purlin and rafter roof construction.
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.
7 simple traditional roofs.
