Steel Roof Framing Plan Details

Roof pitch the metal roofing panels shown in this manual require a min imum slope of 2 ʺ per foot to ensure proper drainage.

Steel roof framing plan details.

Vertical rise over horizontal run. 12 x24 lean to roof plan. The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Cad details document name pdf dwg download all cad construction details 37 1 mb 3 4 mb mc01 identification of roof areas 694 kb 167 kb mc01a single layer underlayment 678 kb 302 kb mc01b double layer underlayment 711 kb 322 kb mc02 vent pipe flashing 626 kb 349 kb mc03 valley.

Standard details for metal roofing siding post frame and residential structures distributed by. In the u s it is defined by the rise in inches to a 12 run. If you need to cut dozens of metal studs and tracks quickly use a circular saw fitted with a toothless carborundum metal cutting blade 7 when cutting individual steel studs or tracks with a circular saw cut on the closed or web side and support the piece tightly on sawhorses. And the line length measurement from the roof peak to the building wall is the hypotenuse.

For these reasons and many others the use of steel framing continues to grow every year with more than 40 of commercial structures now using steel framing and with nearly 500 000 homes built with steel framing over the past decade. Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is. 10 x24 lean to roof plan. While most home builders will outsource the construction of roofing trusses the rafter supports of the roof itself learning to frame a roof yourself is one of the true arts of carpentry and a basic primer is covered below.

For longer slopes and lower roof pitches contact fabral for other suitable profiles. 4 12 through 9 12 are the most common pitches. 3 inch rise per 12 run is a 3 12 pitch roof. Lsf products are cold formed structural members used as studs joists rafters purlins and girts and in assemblies such as steel roof trusses and panelized walls.

Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage. Best materials ph. The run or half the building span is the base of the triangle. Lightweight steel framing architectural design guide preface this publication is intended as a guide for designers speci ers and users of lightweight steel framing lsf.

The rise or height of the roof at its peak is the altitude of the triangle. 8 x24 lean to roof plan.