Roof Purlin Z Purlin Span Table

Z and c members are shop punched for simple field bolted connections.

Roof purlin z purlin span table.

For 2x4s purlins the posts are spaced in 4 feet distance. Purlin load tables load tables provide unfactored gravity load capacities which are based on the lesser of the purlin working load capacity or as controlled by a deflection limit of span 180. Strong and lightweight our z purlins span upwards of 25 feet depending on the roof load and how spaced out the z purlins are. Additionally z purlins can be nested together as a splice in roof construction.

Houston tx 77075 phone 713 946 7140 us wats 800 324 9992 purlin load tables simple span capacities. Wind snow weight tables flexospan provides standard even profile z purlins and z girts as well as custom profiles and punching patterns. Z and c members are available in 8 10 or 12 inch depths. C z purlin size mass table section thickness t mm height d mm z purlins c purlins mass kg m e f l b l 100 10 1 0 102 53 49 12 5 51 12 5 1 75 100 12 1 2 102 53 49 13 51 12 5 2 09 100 15 1 5 102 53 49 13 5 51 13 5 2 59 100 19 1 9 102 53 48 14 5 51 14 5 3 26 150 12 1 2 152 65 61 15 5 64 14 5 2 86 150 15 1 5 152 65 61 16 5 64 15 5 3 55.

Offering robustness and flexibility z purlins are a traditional yet effective system of sheet support that are easier to install and handle than traditional timber. Lapped span design capacity tables including continuous are based on a 15 lap. Steel z purlins and z girts are also available with other depths and flange widths. Z450 is also available on request.

By the standard the most used placement of purlin span for metal roof is five foot intervals. Coating mass of z350 provides long life under normal circumstances. We manufacture any component from 1 2 steel subgirts to 12 section up to 10 gauge. The tables also provide ultimate load capacities for gravity load wind uplift and for deflection limits of span 180 and span 150.

This means that the final roof support system appears to be one unbroken purlin providing efficiency and durability. Standard secondary framing consists of cold formed z shaped roof purlins and wall girts. Where span lengths are unequal eg reduced end spans each purlin should have 7 5 of each adjacent span added as the lap length on that spans side of the support. Stramit generally recommends a lap length of 15 of the span.

Z and c20024 purlin span table single span span inward load outward load deflection. Tables include simple continuous lapped and combination spans allowing a comprehensive range of spanning options. If the space between posts is greater than 8 feet then brace is needed to avoid buckling.