Flow Control Roof Drain Design

Zurn makes it easy to size roof drains.

Flow control roof drain design.

3 size of leader required. The control flo weir is linear functioning with integral membrane flashing clamp gravel guard and poly dome. The flowcontrol assembly is secured to the drain body sump area by the clamping ring. Control flo drains the roof at a controlled flow rate at predetermined levels.

50 000 4 400 11 36. As with all building materials it is the roofing contractor s responsibility to review product use with a design professional to confirm safety compatibility and acceptance with the roof cover manufacturer as well as local building codes. Standard primary roof drains are designed to drain storm water as quickly as possible. Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application.

The result is the number of drains needed. Sizing quantity and location of raintrol roof drains are separate and distinct procedures from those for regular roof drains. These techniques will minimize the amount of water that accumulates or that causes erosion in the problem area. The end result is roof drains 6 in.

Or smaller in size have the ability to flow more water to the piping than the piping can handle using 33 for the vertical and full flow for the horizontal. Roof drains from large area roof drains and siphonic roof drainage systems to green roof drains balcony drains and roof drain accessories we cover the gamut of roof drainage needs for addressing varying rainfall rates and types of sites. 2 total area of roof. Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor.

When sizing roof drains the limiting factor for the amount of water each drain will carry away is the size of leader therefore increasing. All roof openings whether they are at the roof drain or at the vent stack should be protected from vandalism. The flow through the roof drain is very efficient directing the water into the drain. If you have heavy runoff from roof downspouts and neighboring properties redirecting or capturing runoff can provide better control.

The zurn z105 15 diameter control flo roof drain for dead level roof construction has a dura coated cast iron body. And 4 area handled by each drain. Take the roof s total square footage and divide by the total square footage handled by one drain. Smith raintrol metered flow rate roof drains are designed to provide this control.

Control flo is a method to remove rain water from flat or sloped roofs. Or 12 drains required. The four things you will need to know are. 1 rate of precipitation.