4 Diameter Roof Drain

In addition to the primary roof drains there will also be overflow drains which are used for redundancy and sized in the same manner.

4 diameter roof drain.

This table is based on zurn s roof drain vertical requirement for horizontal roof areas at various rainfall rates table. The result is the number of drains needed. Below you can find the different roof drains that wade us offers. 3063 9 3 4 diameter receptor drain.

The number of drains can vary and you can increase the number of roof drains to select smaller diameter roof drains. Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. 3012 baa buy america act compliant cad drawings. The above sizing data is offered as a guide only.

Roof drains 3043 9 3 4 diameter roof overflow drain regularly furnished. Calculate drains needed. Unfortunately recommendations aren t that straightforward because you also need to account for water pressure material friction and more. 3105 15 diameter deck drain.

Cast iron roof drain with 2 in. Submittal specification sheets. 3012 9 3 4 diameter roof drain. 3115 12 diameter.

3111 12 square deck drain. 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. 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.

3012 3d view click here. 3012 9 3 4 diameter roof drain. For additional information on sizing and other specifications simply download the submittal sheets located underneath each product. Cast iron roof overflow drain with flange flashing ring gravel stop bearing pan with hardware external overflow dam.

Watts drainage products rd 300 r series 4 in. Cast iron roof drain with flange flashing ring gravel stop locking dome. Take the roof s total square footage and divide by the total square footage handled by one drain.