How To Calculate Gable Roof Pitch

Measure with a speed square.

How to calculate gable roof pitch.

Angle the angle of a roof is the same as the roof s slope except instead of being. Calculating the gable s square footage. 144 12 12. Multiply this 12 by the roof pitch rise.

Convert plate length amount of 12 6 into inches 12 12 6 150 inches. Outside of the u s a degree angle is typically used. The calculator above can handle much of this math. Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run.

A gable is the part of the side wall of a building above a line between the eaves. For a simple gable roof the span wall to wall will be twice the size of the run wall to ridge horizontally. If you do need to calculate the pitch an estimate or shortcut is usually more practical than measuring the roof s overall dimensions. Divide the rise by the run 5 12 0 4166667.

72 12 6 at the highest point the gable is 6 high. Calculate the height of a gable rake wall based on roof slope and half of the wall s horizontal length the rake run. There is no standard universal roof pitch roof pitch varies depending on culture climate style and available materials in the usa the range of standard pitches is anywhere between 4 12 and 9 12 in the uk the typical house has a pitch between 40 50 although 45 should be avoided. 12 6 72 convert the inches back to feet.

Contemporary houses often have flat roofs which shouldn. What is the standard pitch for a roof. Gable roof framing calculator plan diagram with full dimensions for a good straight fascia add an extra inch or 2 to the tails of all your rafters total length. Split the gable into two triangles and form a rectangle 6 12 72 the total area for your gable.

Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. The pitch of this roof is 4 8 12. Divide the slope by two to get the pitch. It can be looked upon as the part of the wall that seals the end of the roof structure.

Divide this amount by the run of the roof pitch. After they re up you can snap a line to mark and trim the tails in a nice straight line to make up for any ridge warp or marking cutting and fixing errors. Set the level on the edge of the speed square as shown below then place the heel of the speed square on a rafter or gable edge of the roof. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

Here are a couple examples. When a gable consists of a sloping roof rather than a flat one the gable forms a triangle. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. To see how pitch impacts the look of a garage and changes cost click the design center button on our pole barn kits page.

A gable end is the gable and the wall beneath it. Bottom plate length 12 6 roof slope 5.