Residential Roof Framing Design

Another common design in the northeast is the saltbox which is a gable roof with one longer side.

Residential roof framing design. Although truss designed roofs are predominant throughout most of the residential construction industry there are regions where building with stick frame roofs is still common. These or similar load combinations are often used in practice as short cuts to those load combinations that govern the design result. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial. A design and construction handbook nahbrc 1994.

For high wind conditions prescriptive guidelines for design and construction may be found in the wood. Poorly constructed roofs endanger the people living in a building so you need to make the roof compatible to the rest of the building in a well engineered style. Water easily runs off the slopes of the roof and the modified hip structure make it more durable than a gable roof. On the upcodes website.

Impact to building design. Shed gable hip gambrel and mansard. Also different architectural styles will use the same type of roof. 2018 international building code.

Let s consider a basic gable wood roof framing design. It is a waterproofing layer made of regular felt stacked above the solid. Floor beam span tables of residential structural design we will now look at roof rafter and beam design. The load combinations in table 3 1 are simplified and tailored to specific application in residential construction and the design of typical components and systems in a home.

Chapter 9 roof assemblies. Similar prescriptive design aids and efficient framing practices can be found in cost effective home building. Intricate roofs have many parts that incorporate several of the basic roof designs such as a gable roof sitting atop a gambrel or variations of the gable valley roof design using one or a variety of different types of roof trusses also see our very detailed diagrams showing the different parts of a roof truss. In this post randy shackelford discusses some design choices available to stick frame builders the challenges they pose and the solutions offered by the simpson.

Here we have a wood framed gable roof. Roof framing is one of those carpenter skills that appears quite complicated and indeed some roof designs are difficult. A roof is an integral part of a building and people try to personalise the roof designs to achieve optimum architectural splendour. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load.

The colour and material of the roof complement the structural integrity of a building. The complex design requires more building materials and it s more difficult to construct. This makes the bonnet roof more expensive than other more simple designs. A horizontal timber or metal resting at the peak of the roof the rafters and trusses are connected to the ridge board for a cohesive framework.

Roofs are basically five types.