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...

originally called Firstsäule ("ridge columns"). On a purlin roof the ridge posts carry the ridge purlin. On the latter are hung the sloping rafters to which...

× 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...

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...

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...

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...

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...