Steel Flat Roof Framing Details

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

Steel flat roof framing details.

Today flat roofs are used by architects for the same reasons that they became a cornerstone of modernist architecture. If you build a flat roof try to have it slope in multiple directions to drains or gutters. For longer slopes and lower roof pitches contact fabral for other suitable profiles. 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. Best materials ph. Jun 3 2017 explore anthony valentine s board flat roof on pinterest. The run or half the building span is the base of the triangle.

Some roofs actually slope in several directions ensuring optimal water runoff. Think of a flattened hip roof. Flat roofs are always built at a slight incline at least 1 8 inch per foot. Roof pitch the metal roofing panels shown in this manual require a min imum slope of 2 ʺ per foot to ensure proper drainage.

It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Refer to the rain carrying table in this booklet for the maximum allowable panel length per slope that will provide adequate drainage. When framing a flat roof you will need to create a slight incline. You can do this with a foam layer that exactly fits your roof.

See more ideas about flat roof steel structure steel house. This will help you create a flat roof framing 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.

The rise or height of the roof at its peak is the altitude of the triangle.