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.

Residential roof framing design.

Let s consider a basic gable wood roof framing design. A design and construction handbook nahbrc 1994. The complex design requires more building materials and it s more difficult to construct. Water easily runs off the slopes of the roof and the modified hip structure make it more durable than a gable roof.

This makes the bonnet roof more expensive than other more simple designs. Another common design in the northeast is the saltbox which is a gable roof with one longer side. 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.

Impact to building design. Roof framing is one of those carpenter skills that appears quite complicated and indeed some roof designs are difficult. 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. A roof is an integral part of a building and people try to personalise the roof designs to achieve optimum architectural splendour.

Roofs are basically five types. It is a waterproofing layer made of regular felt stacked above the solid. Here we have a wood framed gable roof. Shed gable hip gambrel and mansard.

On the upcodes website. A composite decking made of solid materials it resembles real wood and particularly strong and stable for bearing heavy load. 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. The image below shows a cross section of our simple 12 x 13 house from the joist span tables section of this tutorial.

Similar prescriptive design aids and efficient framing practices can be found in cost effective home building. 2018 international residential code. Also different architectural styles will use the same type of roof. The colour and material of the roof complement the structural integrity of a building.

These or similar load combinations are often used in practice as short cuts to those load combinations that govern the design result. Continuing on from part 3. 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. See chapter 10 means of egress particularly 1011 12 stairway to roof 1011 12 2 roof access and 1011 16 ladders.

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.