Compared to conventional roofing system it might be a bit pricier in terms of installation but also has longer durability to provide better value for the future.
Purlin rafter roof construction.
J l neal subject.
A common arrangement is a rafter and purlin system which combines purlins and rafters.
The purlins are in turn supported by rafters or walls.
Purlins support the loads from the roof deck or sheathing and are supported by the principal rafters and or the building walls steel beams etc.
Roofs and not for traditional purlin and rafter 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.
Purlin roof structure civil engineering design in architecture or structural engineering or building a purlin or purline is a horizontal structural member in a roof.
In architecture structural engineering or building a purlin or historically purline purloyne purling perling is a horizontal beam or bar used for structural support in buildings most commonly in a roof.
Building control guidance note purlin and rafter roofs timber sizes and construction details author.