Metal Roof Purlin Span

Available in cee or zee shape red oxide primed or galvanized 16 14 or 12 gauge sizes from 4 up to 12 flange widths of 1 1 2 up to 4 cut to your specified lengths hole punching available load tables available for all material.

Metal roof purlin span.

We do recommend it however. They are available in galvanized and stainless steel and can be coated in zam and or prime painted. Meanwhile there are two kinds of purlin span for metal roof based on the shapes which are the c purlins and z purlins. Galvaspan steel c section purlins come in different sizes and thicknesses to cater for your needs.

The cos of the purlin spacing is because the load on the purlins is vertical and the purlin spacing is with the run of the roof. For sake of discussion we will assume a minimal roof snow load of 20 psf pounds per square foot and a 4 12 roof slope. C and z span load table. Continuous purlin span are simply supported at each end and at a series of equally spaced intermediate supports.

To identify whether yours is the earlier or the latter type look for the end of the rails and check whether the shapes mimics the shape of letter c or letter z. Do all roofing projects require purlins. Non cyclonic sites only cpe 0 9 and cpi 0 2 high pressure zones kl 1 5 and 2 0 included max roof span allowed 12m. Tables are given for 5 or more spans.

02 6554 6422 email. Z purlin and girt section properties. Purlins are non pressure treated 1 x 4 x 12 lumber that is installed on to the roof in a specific layout pattern and screw pattern. In this section you ll find sample calculations for determining wind and snow loads as well as z purlin and z girt weight tables.

Purlins near roof edges or changes of roof slope are subject to higher wind forces than interior purlins. These tables are for spans in which purlins are lapped over each support where the lap length is 15 of the span. Safe roof purlins spans the safe spans below are suitable for sheds and class 1 structures with the following assumptions. Roof purlins are used for fastening metal roof panels.

Dead load will be the actual weight of the roof steel and the roof purlins. Homepage metal roof metal roof purlins spacing and rafter distance details by rooflast posted on june 29 2020 june 29 2020 during the roof installation or re roofing process after the roof sheets are prepared it is time to support their framework by installing purlins. Engineered purlin metal mart offers a complete line of engineered purlin material.