Roof Area Data

Divided by the 4 600 sq.

Roof area data.

Roof area is 200 x 500 100 000 sq. Area is defined as the expanse or measurement of a given surface and there are a few methods for measuring your roof s area. Us demand for residential roofing products is forecast to advance 4 0 percent per year to 147 million squares in 2020 valued at 10 4 billion. From table 1 one 4 leader at 4 rate of rainfall will take care of 3 460 sq.

There are currently over 50 000 establishments engaged in the installation roofing siding and sheet metal work valued at a total of 31 4 billion. Divide total roof area by area found in step 3 to obtain the number of drains required example. Number of roof. Total roof area 500 by 200 100 000 sq.

Equals 32 6 or 33 drains required. You should of course see the manufacturer provided technical data sheet for the r value of specific products. Here s a handy r value table that covers most types of roof coverings building insulation and a few other materials. Determine rate of rainfall for this example use 4.

4 roof drain 3 determine your building s location on the above map to determine the approximate rainfall as measured in inches per hour. By experimenting with different aircraft camera systems and applying computer vision we continue to produce the highest resolution imagery available in the market today so we can exceed any customer requirement. 2 estimate the roof drain outlet size you will likely use. The base width is the distance from one corner of your roof to the other at its base on the short side of your house.

1 calculate the roof area to be drained. Our roof calculator uses base length and base width to find the estimated area. R value of various materials. For a very good introductory overview article on r value see r values over at the website of.

For a 4 hourly rainfall and 4 leader each drain can handle 4 600 sq.