House Long Span Roof Design

Floor beam span tables of residential structural design we will now look at roof rafter and beam design.

House long span roof design. It may consist of a flat roof on top but the main design element is the multi pitch sloped in what is essentially a hip roof on top of another hip frame. Long span roofs are generally defined as those that exceed 12 m in span. Let s consider a basic gable wood roof framing design. Let s consider pricing for a simple structure a 26 x40 gable style house.

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. Another is to create a custom gravel stop drip edge flashing piece that changes profile along the length of the roof to compensate for the change in pitch. The intent is to create a uniform edge on the outside but a varying profile on the inside along the sloping roof. Continuing on from part 3.

Also different architectural styles will use the same type of roof. Long span roofs can create flexible column free internal spaces and can reduce substructure costs and construction times. Near the top is a very steep pitch and near the upper walls of the home are a lower pitch though still fairly steep. One way is to design the roof to have a parapet wall covering the roof edge.