Roof Drain Leader Pipe

Downspouts are usually vertical and usually extend down to ground level.

Roof drain leader pipe.

Approximate leader drain pipe size. Sizing a roof water drain 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. This flexible downspout extension easily bends and holds its shape and can be extended from 25 55 in. Reference leader size with hourly rainfall rate to determine roof area drained by each leader chart b.

The next step is to determine each roof area that will be served by a separate leader drain pipe scupper or downspout. Downspouts are drainage pipes that direct rain water from the roof to the ground. A downspout waterspout downpipe drain spout roof drain pipe leader is a pipe for carrying rainwater from a rain gutter. In general increasing leader size will decrease the number of drains required.

The flow rate in storm drain piping shall not exceed that specified in table 1106 2. 1 inch 25 4 mm 1 foot 304 8 mm 1 gallon per minute 3 785 l m. Featuring durable plastic construction this extension can be buried bent or connected to additional sections. Roof drain selection.

Use this downspout extension to divert water away from the foundation or connect to drainage pipe and catch basin to control drainage. This is where the rainwater is lead away from the building s foundation so that no rainwater is able to pool around the building. Table 1106 2 storm drain pipe sizing for si.