Roof Pitch Factor Multiplier

Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter. So the actual roof surface if it were laid down flat on the ground would be 1 118 times larger than the footprint of the roof. The roof pitch conversion factor is a number that when multiplied by the area covered by the roof gives an estimate the total surface area of the sloped roof itself.

swivel sling chair set rooftop solar power plant images rolex milgauss wall clock silver tacoma rv park sumner wa roofing iron sheet sizes in kenya roof parapet flashing roof fan price in pakistan roofline supply delivery south san francisco ca

Roof Area Calculator Surface Area Multiplied By Pitch

Conversion Of Plan To Pitched Dimensions

How To Measure Estimate A Roof For Roofing Contractors Roofing Company Tampa Fl

Estimating Roof Pitch Determining Suitable Roof Types Diy Guide

Roof Pitch Multiplier What Is It How To Use

Roof Pitch Factor Chart Latest Rooftop Ideas

Determine how many square feet of roof area a building has by measuring blueprints or plans.

Roof pitch factor multiplier.

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. If you know the pitch of a roof you can use the numbers in the following pitch table to do the following. It is sometimes called the roof pitch multiplier. If the home measures 20 x 40 and has a 7 12 roof then to calculate the slope of the roof follow these steps.

2280 1900 380 feet added for pitch. This roof pitch chart will give you your multiplier. Step 2 find the value of 7 12 from the roof slope multiplier table which is 1 16. The headache of using pythagoras and trigonometry can be spared by making use of these charts.

Step 1 multiply 20 and 40 which equals 800. Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118. This will give you the rise over run or pitch. Determine how many square feet of roof area a building has by measuring from the ground.

For example if you measure 4 inches the pitch of your roof is 4 12. That gives you 5 590 square feet which is the actual area of the surface of the roof. And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier. The roof slope factor chart also consists of conversion factors to determine the slope of the roof.

A 10 slope roof should not be confused with a 10 pitch roof as a 10 slope roof means that the roof rises by ten inches for every foot of run. 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.