Safeira How Two Different Roofs

Two main types of roofs are flat roofs and sloping ones.

Safeira how two different roofs.

A type of roof containing two sloping planes of different pitch on each of four sides. Energy use intensity or eui is a building s annual energy use per unit area. The sides come together at the top to form a simple ridge. Valleys can allow water to pool.

A type of roof containing two sloping planes of different pitch on each side of the ridge. A gambrel roof usually contains a gable at each end just like a standard gable roof. Sheathing blocking is added along the valley and the sheathing pieced in for both roof planes. Having two different temperatures on each side of an area creates energy transfer.

It has a polygon on two sides and a triangle on two sides. Proper waterproofing is a must. The most common type of a hip roof. Also different architectural styles will use the same type of roof.

Compare massings layout and envelope options. Eui is useful for comparing the performance of buildings across sizes types and locations. Here s how to think about the two different slopes. In some ways it is similar in style to the mansard roof discussed above because it has two varying slopes.

The lower side of the roof will have a steep slope almost vertical while the upper side of the roof will. Pick the right strategies. The lower the u value the greater the material resists to heat flow and its insulation properties are better. The flat roof see the figure has historically been widely used in the middle east the american southwest and anywhere else where the climate is arid and the drainage of water off the roof is thus of secondary importance.

The u value unit is w m2 k. The monthly consumption chart in particular tells us what we d like to know. At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing. The lower plane has a much steeper pitch than the upper often approaching vertical.

It is typically measured in thousands of btu per square foot per year kbtu ft2 yr or kwh m2 yr. Study natural ventilation hvac systems for all project types. 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. Similar to a cross gable roof.

To transition the eaves the horizontal fascia extends to the last rafter tail and a vertical return finishes the transition. The line where the two roofs meet is called a valley. The lower plane has a steeper slope than the upper. However a gambrel roof only has 2 sides while a mansard roof has 4 sides.