4 Diameter Roof Drain

Cast iron roof drain with 2 in.

4 diameter roof drain.

Cast iron roof drain with flange flashing ring gravel stop locking dome. 3012 baa buy america act compliant cad drawings. 3111 12 square deck drain. This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table.

The number of drains can vary and you can increase the number of roof drains to select smaller diameter roof drains. Watts drainage products rd 300 r series 4 in. Below you can find the different roof drains that wade us offers. 3012 9 3 4 diameter roof drain.

The above sizing data is offered as a guide only. 3012 9 3 4 diameter roof drain. Submittal specification sheets. In addition to the primary roof drains there will also be overflow drains which are used for redundancy and sized in the same manner.

Take the roof s total square footage and divide by the total square footage handled by one drain. The result is the number of drains needed. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. Calculate drains needed.

3101 14 square deck drain. These drains are distinguished by having higher rims. 4 select a reference of a roof drain size with hourly rainfall together with the roof area square footage you have estimated and then determine from the chart below how many roof drains you require. 3105 15 diameter deck drain.

Unfortunately recommendations aren t that straightforward because you also need to account for water pressure material friction and more. Roof drains 3043 9 3 4 diameter roof overflow drain regularly furnished. We regularly get asked about the water flow capacity of different pipe sizes and which is the best roof drain for a specific pipe size. Each 4 drain size in a 6 hourly rainfall area will accommodate drainage of 3 070 sq.

Cast iron roof overflow drain with flange flashing ring gravel stop bearing pan with hardware external overflow dam. As we will see in steps 3 4 the size. For additional information on sizing and other specifications simply download the submittal sheets located underneath each product.