Steel Roof Framing Plan Details

8 x24 lean to roof plan.

Steel roof framing plan details.

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. 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. 10 x24 lean to roof plan. And the line length measurement from the roof peak to the building wall is the hypotenuse.

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

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. 3 inch rise per 12 run is a 3 12 pitch roof. 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. Showed that the zinc coating on steel framing materials can protect against corrosion for hundreds of years.

In the u s it is defined by the rise in inches to a 12 run. The rise or height of the roof at its peak is the altitude of 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. To cut individual steel studs and tracks use straight cut aviation snips photo 1.

Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is. Vertical rise over horizontal run. The run or half the building span is the base of the triangle. 4 12 through 9 12 are the most common pitches.

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. Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage.