Enter the extension wall length into wall length and double the extension wall width then minus ridge thickness into the wall width entries.
Hip roof stick framing with 2 different pitches.
Porch roof extensions for hip roof porch extensions from an existing building wall you can use half the calculator results.
Blind valleys simplify framing.
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.
Explore framing complexities that result when roofs of two different pitches intersect.
This is exactly the same ratio as the pitch for the other side but i find it helps to work the two sides separately to avoid confusion especially.
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.
Minus ridge thickness to allow for ridge becoming pole plate roof peak will be slightly higher ridge thick must be same.
You ll have to find the secondary roof hip pitch the same way you found the main roof hip pitch as in figure 3b.
The line where the two roofs meet is called a valley.
The hip pitch in relation to the secondary roof measures out at 9 5 8 18 13 16.
A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration.
The most common type of a hip roof.
Types of hip roofs.
Learn more about off angle roof framing.
The hip roof framing calculator returns the value of the main rafter the side rafter the length of the hip the height of the knee wall and the lengths of the jack rafters.
It has a polygon on two sides and a triangle on two sides.
A hip roof or a hipped roof is a style of roofing that slopes downwards from all sides to the walls and hence has no vertical sides.
Use separate hip roofs on homes with different wings.
The sides come together at the top to form a simple ridge.
Similar to a cross gable roof.
While the slope of the common rafters are expressed as x in 12 the slope of the hip and valley rafter on the same roof will be x in 16 97 so where two roof sections intersect to form a 90 angle a regular hip or valley and each roof.
How to use the hip roof framing calculator.
Select the following information by using the drop downs to enter values in feet and inches.