Framing Irregular Hip Roof

When framing irregular hip valley roofs the h v rafter members are not equally split by the sheathing lines.

Framing irregular hip roof.

View the irregular hip roof valley rafter framing blog for how to layout the hip rafter backing depth mark and the hip rafter side cut mark for hip rafter side cut angles. We ll use the 12 as the rotation point on the framing square and move the other end of the framing square to the edge of the hip rafter material using the 6 rotation dimension. Framing angle hip roof drawings. A regular hip has equal slopes on all sides while an irregular hip has different slopes on the main roof and hip end roof.

Minus ridge thickness to allow for ridge becoming pole plate roof peak will be slightly higher ridge thick must be same. Irregular hip geometry framing dxf auto generated dxf cad file of irregular hip geometry drawing each time script is run. 2007 jlc on complex roof geometry. 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.

Enter the extension wall length into wall length and double the extension wall width then minus ridge thickness into the wall width entries. Such buildings may have more than four hips in the roofs and they form valleys at the inside corners. Irregular hips geometry based on billy dillon s article in the sept. Select the following information by using the drop downs to enter values in feet and inches.

We are the professionals for the future of the craft of carpentry. A hip and valley roof may be part of an irregular structure. It will display the framing square usage for the slope angle of the hip rafter 27 50055 6 12. Porch roof extensions for hip roof porch extensions from an existing building wall you can use half the calculator results.

Pt2 in depth mixed pitch hip and valley roof cutting math theory and technique series. They are off center to illustrate this using sketchup and your models dimensions draw a right triangle with one leg at 25 9 3 8 and the other leg length at 17 2 5 8 now scale the triangle down so the hypotenuse is reduced to 1 1. Saved by norcal a s. Hip roof roof deck backyard gazebo pergola porch extension framing construction roof shapes roof lantern carpentry projects.

This type of roof is also called broken back hip and valley roof because the main hips are intconeected by the rafter of gables on one side and the rafter of the valley on the other. Easy rafters does not calculate a complete four sided hip roof but rather calculates the common hip and jack rafters for one end of a hip roof. Dedicated to the art of carpentery roof framing.