Steel Flat Roof Framing Details

If you build a flat roof try to have it slope in multiple directions to drains or gutters.

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. When framing a flat roof you will need to create a slight incline. R7 roof eave and soffit detail r8 rafter and joist bridging r9 collar tie at rafter detail r10 rafter brace connection detail r11 roof framing with wood tail extension r12 wood truss bearing on steel wall r13 collector block detail r14 non aligned roof wall framing r15 hip beam miscellaneous. And the line length measurement from the roof peak to the building wall is the hypotenuse.

For longer slopes and lower roof pitches contact fabral for other suitable profiles. The run or half the building span is the base of the triangle. Jun 3 2017 explore anthony valentine s board flat roof on pinterest. Some roofs actually slope in several directions ensuring optimal water runoff.

Today flat roofs are used by architects for the same reasons that they became a cornerstone of modernist architecture. Think of a flattened hip roof. See more ideas about flat roof steel structure steel house. Roof pitch the metal roofing panels shown in this manual require a min imum slope of 2 ʺ per foot to ensure proper drainage.

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. A flat roof has a slope of 1 8 per foot to 2 12. 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.

The rise or height of the roof at its peak is the altitude of the triangle. Best materials ph. Standard details for metal roofing siding post frame and residential structures distributed by. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped.

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.