Roof Gutter Drain Pipe Size

6 inch 7 960 square feet.

Roof gutter drain pipe size.

Problems with gutter sizing. The 6 in 12 pitch factor 1 1 multiplied by 1 000 yields an effective area of 1 100 square feet. Most of all is location and your average rainfall during a large downpour. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

Primary cause for water spillage is debri in the gutter. The flexible design easily bends and holds its shape and can be extended from 25 in. If a roof s various drainage areas call for different size gutters go for the biggest one k style. This wizard makes it easy to calculate the roof design area by providing various shape calculations and the calculation for vertical walls area per international plumbing code ipc.

I will be collecting water from 2 or 3 downspouts and sending it around the house to the street. The roof drain or gutter or drain piping or downspout leader size diameter other size constraints e g. To size the vertical roof drain for the same parameters 5 000 square feet of room area and 6 per hour of rain consult table 1106 2 figure 3. 5 inch 2 500 square feet.

Use this downspout extension to divert water away from the foundation or connect to drainage pipe and catch basin to control drainage. Or less in diameter the piping will be larger in diameter than the roof drain. Smacna s new downspout and gutter sizing calculator enables the user to manually enter the design area of the roof or use the design area wizard for the calculation. I plan to use 3 corrugated pipe but would 4 inch be better.

5 inch 5 520 square feet. Roof drain connected to a 6 in. For example a 4 in. For larger roof drains the pipe may be smaller such as a 10 in.

6 inch 3 840 square feet. Following this logic it is possible that for roof drains 6 in. 6 inch 7 960 square feet. 5 inch 5 520 square feet.

According to the chart for 1 8 slope per 12 of pipe for 5 000 square feet of roof area with a 6 per hour of rainfall the required pipe size is 8. Then use the information below to see what size gutter you need. A house in chicago has a roof whose actual drainage area is 1 000 square feet. I have enough slope but not sure what size drain pipe to use.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. How do i figure how much each pipe can handle. Roof drain connected to an 8 in. For the vast majority of rains gutter and downspouts sizes considerably less than recommended will do the job.

Many factors can effect the proper size of gutter.