Emergency Overflow Roof Drains

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.

Emergency overflow roof drains.

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. 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.

Roof drains from zurn include combination primary overflow control flow dual outlet siphonic retrofit and more which cater from educational to commercial needs. Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor. Scuppers shall not have an opening dimension of less than 4 inches. Discontinued zurn z166 vandal resistant emergency overflow drain.

Product replaced with z100 st 89. Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application. 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. 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.

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. By the 1997 edition of the upc section 1101 11 2 had been added that completely prescribed where and how secondary roof drainage was to be provided.