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.

How do you figure hip roof framing from flat drawings.

Hip roof by roof raise length and width. This is the pointy end. It is not ideal for snow or heavy rain but modern materials and proper drainage have helped. 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.

In the u s it is defined by the rise in inches to a 12 run. Roof rise h roof base length a roof base length a roof base width b roof base width b calculation precision. 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. Here you can calculate hip roof parameters by hip raise and base parameters.

Again once all cuts have been marked cut the pattern rafters test and you re ready to erect the roof framing. The preview window displays a dimensioned plan view of the hip roof. Select the following information by using the drop downs to enter values in feet and inches. This is the line to cut along.

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. 4 12 through 9 12 are the most common pitches. Roof pitch the roof pitch is the numerical measure of how steep or shallow a roof is. A flat roof has a slope of 1 8 per foot to 2 12.

Digits after the decimal point. 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. 3 inch rise per 12 run is a 3 12 pitch roof. Use the bottom edges of these boards to mark the level line cut.

If you build a flat roof try to have it slope in multiple directions to drains or gutters. Mark the end plumb cut angle line back from square on both sides of the hip. 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. To calculate a hip roof select hip from the roof type dropdown list or click on the corresponding button on the toolbar to calculate a hip roof.

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. Draw the sub fascia and finish fascia board on the end of the rafter and against the plumb tail cut. Vertical rise over horizontal run. Measure back from this line and mark a second parallel line on both sides of the hip.

Don t cut yet 2.