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.
Purlin rafter roof construction.
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.
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.
The purlins are in turn supported by rafters or walls.
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.
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.
Purlins are supported either by rafters or the walls of the building.
A common arrangement is a rafter and purlin system which combines purlins and rafters.
J l neal subject.
Roofs and not for traditional purlin and rafter roof construction.