Roof Purlin Dimensions

The roof purlin sizes of both shapes are ranging in length and thickness.

Roof purlin dimensions.

Metal mart offers a complete line of engineered purlin material. Roof hugger retrofit sub purlins are zee shaped structural members that are typically 10 to 12 feet in length. Steel z purlins and z girts are also available with other depths and flange widths. For heavier material such as gage steel the metal roof purlins spacing length could go up to 4 feet.

Generally it will be manufactured due the requirement of the customers. Purlins are 2 by 4 feet and are installed much like metal roofing. We manufacture any component from 1 2 steel subgirts to 12 section up to 10 gauge. Secondary structural steel members z purlins and girts.

They are made from 16 ga 0 060 min 50 ksi structural grade g 90 galvanized steel and specifically notched to fit over the ribs of the existing metal roof panels. Purlins are 2 by 4 feet and are installed much like metal roofing. Purlin plates are beams which support the mid span of rafters and are supported by posts. Like the z purlin the c purlin takes its name from its shape.

The standard of purlin length will vary anywhere between 100 to 300 mm while the thickness will vary anywhere between 1 to 3 mm. For the lighter material such as lightweight aluminum the common spacing length is 4 inches of clear gap. A purlin plate in wood construction is also called an arcade plate in european english under purlin and principal purlin. By supporting the rafters they allow longer spans than the rafters alone.

They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top. Available in a variety of sectional properties lengths and sizes. They give added support to the roof and also provide a nailing surface for the end panels and drip edge. They are installed on top of the roof rafters with a felt underlayment or vapor barrier installed on top.

Metal roof purlins are installed horizontally under metal roofs. Dimension a dimension b dimension c available gauges finish weight per. They give added support to the roof and also provide a nailing surface for the end panels and drip edge. The term plate means a major horizontal supporting timber.

Z purlins and girts c purlins and girts eave struts open track angle purlin and girt clips standing seam roof panel. Pre engineered metal building components. Steel roof purlins and wall girts are produced and available in house. Purlin plates in wooden construction.

Contact flexospan for information on custom purlin and girt structural steel dimensions.