A purlin includes a horizontal bar or beam used for a building’s structural support, most typically in a roof. They’re supported by either rafters or the building’s walls. They most commonly are used in metal structures, although sometimes they replace closely spaced rafters within wood frame buildings.
The roof’s purlins support the roof deck’s weight. The roof deck includes the ply board, wood panel, or metal sheeting which creates the roof’s surface. When made of wood, it usually is covered with some type of weatherproofing and occasionally an insulation material.
Kinds of Steel Purlins
There will include three kinds of steel purlins. Rectangular Hollow Section in Edmonton (RHS) includes a kind of purlin oftentimes used in roofs in which the support structure is visible while construction is complete. For instance, covered patios and decks oftentimes use this kind of purlin. As the bar is hollow, the caps are welded to the purlin’s ends to keep moisture from seeping inside and causing metal corrosion. Its rectangular shape provides the roof the exact same aesthetic quality of a roof that is supported by wooden beams.
C or cee purlins are shaped similar to a squared-off letter C. Oftentimes, they’re used for structural support within walls and floor joists in addition to roofs. Also, C purlins might be used to form ties, columns, or braces in sheds.
The Z or zed purlin is shaped similar to the letter Z. The shape permits the purlin to overlap with other ones at the joints. It’ll give Z purlins the probability to be stronger than cee purlins. They mainly are used for large roofing projects or walls.
For more information on our Hollow Section in Edmonton, contact Maximum Metals Ltd. today at 1 (780) 725 9042.
