Qu'est-ce (qui) est purlin - définition
STRUCTURAL MEMBER IN A ROOF
Purline; Purlins
![Hardwood purlins fixed to steel supports on a [[skillion roof]] and main roof. House under construction, tropical North Australia.](https://commons.wikimedia.org/wiki/Special:FilePath/Hw-purlins.jpg?width=200 "Hardwood purlins fixed to steel supports on a [[skillion roof]] and main roof. House under construction, tropical North Australia.")
![A traditionally framed timber [[queen post]] roof showing the placement of ''principal purlins'' or ''purlin plates'' supporting common rafters](https://commons.wikimedia.org/wiki/Special:FilePath/Trad-queen-post.png?width=200 "A traditionally framed timber [[queen post]] roof showing the placement of ''principal purlins'' or ''purlin plates'' supporting common rafters")
![[[Timber roof truss]] with purlins](https://commons.wikimedia.org/wiki/Special:FilePath/Inside_wboylston_old_stone_church.jpg?width=200 "[[Timber roof truss]] with purlins")
Purlin
·noun ·Alt. of Purline.
purlin
['p?:l?n]
¦ noun a horizontal beam along the length of a roof, resting on principals and supporting the common rafters or boards.
Origin
ME: perh. of Fr. origin.
Purlin
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.
Wikipédia
Purlin
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.
