A view of a roof using common purlin framing. The purlins are marked in red. This view is from the inside of the building, below the roof. The rafters are the beams of wood angled upward from the ground. They meet at the top of the gable at a ridge beam, which has extra bracing to attach it to the rafters. The purlins are the large beams perpendicular to the rafters; from this shot, it appears that there are three purlins on either side of the roof. The sheathing boards are sometimes called the roof deck and are painted white.
A purlin (or historically purline, purloyne, purling, perling) is a longitudinal, horizontal, structural member in a roof. In traditional timber framing there are three basic types of purlin: purlin plate, principal purlin, and common purlin.
Purlins also appear in steel frame construction. Steel purlins may be painted or greased for protection from the environment.
basic types of purlin: purlin plate, principal purlin, and common purlin. Purlins also appear in steel frame construction. Steel purlins may be painted...
rafter interrupted by and joined to a butt purlin. Common rafters pass over and are supported by a principal purlin, if present. A "binding rafter" is not...
loads.[citation needed] A comparable element in roof construction is a purlin. The girt is commonly used as a stabilizing element to the primary structure...
gable end wall by projecting the purlins and are usually capped off by bargeboards to protect the wall and the purlin ends. The overhang at the gable is...
usually occur at regular intervals, linked by longitudinal timbers such as purlins. The space between each truss is known as a bay. Rafters have a tendency...
sheeting or sheathing) to support the roof covering. Heavier under purlins or purlin plates are used to support longer rafter spans. Tie beams, which may...
not in the wall such as crown plate, a purlin-like beam carried by crown posts in roof framing, and a purlin plate which supports common rafters. In...
× 2 inch (7.5 × 5 cm) wooden purlins and 3 × 2 inch wooden spiking plates at the ends of the floor joists. The purlins are attached to eight T-shaped...
cold or temperate climates, it is constructed of rafters, roof trusses or purlins. The pitch of a gable roof can vary greatly. The gable roof is so common...
needed] Log cabins were constructed with either a purlin roof structure or a rafter roof structure. A purlin roof consists of horizontal logs that are notched...
peregrine falcon and a merlin Perlin noise, computer graphics technique Purlin, in building construction, a horizontal roof member This disambiguation...
by using a joist hanger. Beam (structure) Framing (construction) Girder Purlin Rafter Truss Wikimedia Commons has media related to Joists. Look up joist...
in place. The wooden framed roof rests on the wooden beams followed by purlin and rafters. It is an overhanging roof covered in locally sourced slate...
"Norman truss" which is similar to a king post truss. This is a through-purlin truss consisting of a tie beam and paired truss blades, with a central king...
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