How Do You Figure Hip Roof Framing From Flat Drawings

To do this do not make the tail cut until this has been established.

How do you figure hip roof framing from flat drawings. For example say that 2 of the sides of your hip roof measure 6 feet 1 8 m 2 sides measure 10 feet 3 0 m and the roof is 3 feet 0 91 m high. Use the bottom edges of these boards to mark the level line cut. Select the following information by using the drop downs to enter values in feet and inches. Mark the end plumb cut angle line back from square on both sides of the hip.

If you build a flat roof try to have it slope in multiple directions to drains or gutters. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. Measure back from this line and mark a second parallel line on both sides of the hip. Think of a flattened hip roof.

To mark and cut hip plumb and side cuts with a circular saw print a paper template easy accurate or. The preview window displays a dimensioned plan view of the hip roof. Hip roof by roof raise length and width. 3 inch rise per 12 run is a 3 12 pitch roof.

Here you can calculate hip roof parameters by hip raise and base parameters. Draw the sub fascia and finish fascia board on the end of the rafter and against the plumb tail cut. Next you will want to look for a hip roof angle calculator so that you can make sure all of your precision detailing for the roof itself is going to be. Don t cut yet 2.

For example you might need a hip roof framing calculator to work out the depth and the range of the frame that is to go up to make sure everything can be cut and prepared to the right size. In the u s it is defined by the rise in inches to a 12 run. A flat roof has a slope of 1 8 per foot to 2 12. Finally divide the area of the whole roof by the area of one plywood sheet to figure out the number of sheets you ll need.

4 12 through 9 12 are the most common pitches. Vertical rise over horizontal run. This is the pointy end. Digits after the decimal point.

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. This is the line to cut along. Roof rise h roof base length a roof base length a roof base width b roof base width b calculation precision. Given pitch and a horizontal area measurement multiply the horizontal area by a correction factor corresponding to pitch provided in the table below to determine the actual area of the roof to be used in the roofing material calculator.

Depending whether the roof area is measured horizontally possibly from a drawing or photograph a correction factor is necessary to determine the actual area of the roof.