Purlin Roof Deck

The use of purlins instead of closely placed rafters is common in metal buildings and in wood framed construction.

Purlin roof deck. 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. Purlin or purline is a horizontal part of the support system in a roof. There is an available purlin for every type of roofing material including purlin span for metal roof which is the most common material type to use this item. The steel purlins are in turn supported by rafters or walls.

If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in. 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. Lower than the purlin along the house 12 x 1 4 3. The purlins of a roof support the weight of the roof deck.

They in turn are supported by the main rafters or by the building walls themselves. Several kinds of purlins exist. Steel decking purlins. Purlins are usually supported by rafter building walls or the weight of the roof deck itself.

First mark all the purlin locations on the deck joists. Western metal deck 616 s. When made of wood it is usually covered with some sort of weatherproofing and sometimes an insulation material. The roof deck is the wood panel ply board or metal sheeting that creates the surface of the roof.

Then stretch a string between them. Install the purlin along the house and the outer purlin. Ontario ca 91762 909 467 2016. C purlins roofing structural.

Metal c purlins are light in weight and perfect for simple span construction. In steel construction the term purlin typically refers to roof framing members that span parallel to the building eave and support the roof decking or sheeting. More info add to wish list add to compare composite floor decking. Purlins offer support for the load of the roof deck or sheathing.