Flat Roof Rafter Detail

Other roof protrustions sothat notiiing obstructs tiieflow ofair from eave to ridge.

Flat roof rafter detail. Main features flat roof design detail. Of course you don t need to live in a modern house to deal with a flat roof. Having a manual for warm flat roof construction with details and a summary of rules to follow helps. In our rafter type sketch above the hip rafters are drawn in blue.

Definition of hip rafter. A flat roof has a slope of 1 8 per foot to 2 12. Recommended construction details for performance rated i joists in floor and roof applications. Cold roof insulation between rafters wnapor barrier on warm side below orw sheatiiing roofing roofing 2 x 8 sleepers notched for vent aligned wi rafters flashing over rooang fascia sheatiiing 2 x 4 sleepers aligned w rafters provide.

I joist construction details. The basic construction of a flat roof starts with roofing timber that is laid across two upright items usually two walls. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. 1b apa rim board one.

Just as there are many types of roofs with many roof parts there are many different types of roof trusses this extensive article explains through a series of custom truss diagrams the different truss configurations you can use for various roofs. Notice that the hip rafter forms what. A roof dormer may be gabled as in our sketch above or it may be a low slope or flat roof. Yet for historic modern style buildings like this old house s cambridge tv project flat roofs are at the core of the architecture meant to reflect the broad horizontal lines of the natural landscape.

The flat roof design detail can go up against different style that when nitty gritty right can ooze a cutting edge feel. These days cut ups or roofs with a lot of valleys dormers and other features are increasingly popular. Such as joist header or rafter. That will help you remember certain factors and details to build the best possible flat roof.

While this article focuses on configurations we also have a very cool set of illustrations showcasing the different parts anatomy of roof trusses. In many cases with purchased house plans the details of the roof construction including rafter design are included. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. In addition to floor and roof framing details this guide includes recommendations for cantilevers.

First off the flat roof design detail is an extremely basic direct and utilitarian design every single current trademark. For concentrated vertical load transfer capacity see 1d. A rafter that runs diagonally between the roof ridge and the top of the wall plate forming a hipped roof.