Framing Hip Roof With Different Pitches

Minus ridge thickness to allow for ridge becoming pole plate roof peak will be slightly higher ridge thick must be same.

Framing hip roof with different pitches.

The pitch of the unequal hip rafter can be expressed in relation to either the main roof or the secondary roof. Modern residential hip roof construction uses common pitch ratios in general. A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration. Using a pitch measuring tool that i d made we also determined that the exact pitch of the shed roof was 3 1 2 in 12.

But here it will be different since the hip rafter doesn t lie at 45 degrees to the commons. As compared to global roof framing hip roof framing is more difficult because it consists of four sides with variable lengths instead of two sides. Blind valleys simplify framing to keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge. Learn more about off angle roof framing.

Hip roofs can be generally framed into a large variety of sizes that can be t or l shaped and may need a more complex frame. Enter the extension wall length into wall length and double the extension wall width then minus ridge thickness into the wall width entries. For example in an equal hip roof with an 8 12 pitch the pitch of the hip rafter would be 8 17. Select the following information by using the drop downs to enter values in feet and inches.

Explore framing complexities that result when roofs of two different pitches intersect. Porch roof extensions for hip roof porch extensions from an existing building wall you can use half the calculator results. The most common hip roof pitch ratios fall between 4 12 and 6 12 although variations occur based on factors such as snow rain and wind conditions which is because steeper hip roof pitch ratios allow for less accumulations of snow and rain on the roof and lower ratios provide less wind resistance.