Roof Drain Pipe Size For A 170 Sq Ft Roof

Following this logic it is possible that for roof drains 6 in.

Roof drain pipe size for a 170 sq ft roof.

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. Froet 100clp nh dual outlet drain low profile. Equals 32 6 or 33 drains required. Sizing a roof water drain.

5 inch hr. 1 inch hr. Enter table 1108 2 until you find a diameter pipe that will carry 9 375 sq ft. Take the roof s total square footage and divide by the total square footage handled by one drain.

The roof drain typically will not remove the water as fast as you may think. Sizing data for conventional. Or 12 drains required. For larger roof drains the pipe may.

2 inch hr. To convert to an area for use in table 1108 2 do this. Quick view compare. Divided by the 4 600 sq.

3 inch hr. The first step in sizing a roof drain is to calculate the surface area of the roof that the drains will be covering as well as the average hourly rainfall rate at the building location. The next step is to determine each roof area that will be served by a separate leader drain pipe scupper or downspout. 6 inch hr.

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. 4 inch hr. Pipe cross section drainage area. Divide total roof area by area found in step 3 to obtain the number of drains required example.

Or less in diameter the piping will be larger in diameter than the roof drain. 5 19 6 sq in. 300 x 500 150 000 sq. Rd rd 10 000 4 x 3 75 9 375 sq ft.

Roof area is 300 x 500 ft. An 8 inch diameter pipe on 1 4 inch per foot slope will carry 16 300 sq ft but a 6 inch will carry only 7 550 sq ft therefore use. 4 leader size is selected. Maximum horizontal projected roof area that can be drained in square feet.

Rainfall rate inches per hour. For example a 4 in. Roof drain connected to a 6 in. Determine the size of leader to be used.

Quick view compare choose options. Flat roof drainage capacity of a single drain pipe or leader. Each drain can handle 4 600 sq. The drains should be equally spaced and located symmetrically about the roof.

Canplas frank pattern froet josam marathon mifab miro pipe support modi systems olympic plastic oddities portals plus sioux chief smith thunderbird the vault wade. Calculate total roof area. The result is a roof collapse. 50 000 4 400 11 36.

Step by step sizing of zurn drains step 1. Shop for roof drains at ferguson. 12 500 ft 2. Horizontal drain 10 000 sq ft.

The result is the number of drains needed.