Emergency Overflow Roof Drains

Discontinued zurn z166 vandal resistant emergency overflow drain.

Emergency overflow roof drains.

1108 2 separate systems required. Overflow drains shall be the same size as the roof drains with the inlet flow line two inches above the low point of the roof and shall be installed independent from the roof drains. An overflow drainage system will be designed to function independently of the primary system to drain water from the roof if the primary drains or scuppers become blocked and to prevent overloading of the roof. Z166 vandal resistant emergency overflow drain.

Scuppers shall not have an opening dimension of less than 4 inches. A primary drainage system is designed to remove water from the roof as quickly as possible. Product replaced with z100 st 89. Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application.

Where roof drains are required secondary emergency overflow roof drains or scuppers shall be provided where the roof perimeter construction extends above the roof in such a manner that water will be entrapped if the primary drains allow buildup for any reason. 1108 1 secondary emergency overflow drains or scuppers where roof drains are required secondary emergency overflow roof drains or scuppers shall be provided where the roof perimeter construction extends above the roof in such a manner that water will be entrapped if the primary drains allow buildup for any reason. Smith carefully designs and manufactures a full line of roof drains deck drains scupper drains promenade and parking area drains and more to satisfy both the artistic eye of the architect and the calculating mind of the engineer. Dura coated cast iron body dome cap steel perforated overflow sleeve and vandal proof securing device.

Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor. When scuppers are used for secondary emergency overflow roof drainage the quantity size location and inlet elevation of the scuppers shall be sized to prevent the depth of ponding water from exceeding that for which the roof was designed as determined by section 1611 1.