Residential Wood Frame Flat Roof Details

This will help you create a flat roof framing plan.

Residential wood frame flat roof details.

From there the flat roof system you choose will determine the materials you apply. This is known as prescriptive. Roof snow drift surcharge a n g l e note a 15 increase in the allowable capacity of wood for loads that include snow which is a short term load snow loads 7 12 cs 0 99 slope 8 12 0 91 9 12 0 83 10 12 0 75 11 12 0 69 12 12 0 63 note that roofs exceeding an angle of 30 degrees may reduce the ground snow load. Although flat roofs are cheaper to build than pitched roofs they have a shorter life span.

Standard details for metal roofing siding post frame and residential structures distributed by. The focus of this project was on connections used with conventional light frame wood roof construction. Best materials ph. Flat roofs are always built at a slight incline at least 1 8 inch per foot.

A literature review was conducted and supplemented with new research on the performance of conventional roof systems and components including ceiling joist to rafter connections and roof framing to wall connections. You can do this with a foam layer that exactly fits your roof. Of course you don t need to live in a modern house to deal with a flat roof. Some roofs actually slope in several directions ensuring optimal water runoff.

Underneath the basics flat roofs are usually constructed with a ceiling nailed to joists which support a deck usually wood in residential construction a vapor barrier insulation and a roof board. Timber frame flat roof detail. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. Flat roof construction for residential.

Details for conventional wood frame construction the first approach to achieving a strong durable struc ture involving economical use of materials is to follow a. When framing a flat roof you will need to create a slight incline. Introduction to prescriptive roof framing 3 prescriptive roof construction the international residential code irc and the international building code ibc set out specific guidelines within which conventional light frame wood structures may be built without the need for engineering analysis of each component.