Steel Flat Roof Framing Details

Standard details for metal roofing siding post frame and residential structures distributed by.

Steel flat roof framing details.

The framing of a basic gable roof is based on a right angle triangle and the various roof framing components fit the triangle. Flat roofs are always built at a slight incline at least 1 8 inch per foot. This will help you create a flat roof framing plan. The run or half the building span is the base of the triangle.

Contemporary designers frequently aim to produce the same clear and simplified forms that appeared at the beginning of the 20th century but are now free to use a wide range of new materials and construction techniques that reflect present day technology. For longer slopes and lower roof pitches contact fabral for other suitable profiles. 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. You can do this with a foam layer that exactly fits your roof.

When framing a flat roof you will need to create a slight incline. 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. Framing a roof is the last step in framing new construction. See more ideas about flat roof steel structure steel house.

If you build a flat roof try to have it slope in multiple directions to drains or gutters. And the line length measurement from the roof peak to the building wall is the hypotenuse. Best materials ph. Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage.

Some roofs actually slope in several directions ensuring optimal water runoff. Think of a flattened hip roof. Roof pitch the metal roofing panels shown in this manual require a min imum slope of 2 ʺ per foot to ensure proper drainage. The rise or height of the roof at its peak is the altitude of the triangle.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped.