Roof Pitch Multiplication Factor

From the roof pitch factor table note down the roof pitch conversion factor corresponding to the roof pitch calculated.

Roof pitch multiplication factor.

The roof pitch factor will help in figuring out the exact roof estimate. For example suppose you have a 4 12 pitch roof and the width of the house is 28 feet. Step 2 find the value of 7 12 from the roof slope multiplier table which is 1 16. Step 3 multiply step 1 and step 2 i e.

Pitched roof provide you protection again heavy rains. 800 multiplied by 1 16. There are lots of advantages that you can get by having pitched roof on your house as compare to flat roof. Then you ll be able to measure slope from an unfinished attic space under the roof.

Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. Step 1 multiply 20 and 40 which equals 800. To obtain an accurate roof pitch measurement properly measure the rise and run.

If the home measures 20 x 40 and has a 7 12 roof then to calculate the slope of the roof follow these steps. In our example the roof pitch was calculated as 9 12 which has a factor of 1 25 in the table. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof. Looking at the chart the factor is 1 0541.

To find the roof pitch you need to place a level across the top ridge with a 12 mark that rests directly above the center top of the ridge. If you have already decided that you are going to have pitched roof on your house then you have made a nice decision. Dividing the house width by two equals 14 feet. For roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1.

Roof pitch factor calculator. The combination of two numbers are used to display or show the roof pitch. You need to first figure out the dimensions of the roof by multiplying the length with width to calculate the square footage.