Roof drains watts roof drains provide flexible solutions for specifiers and installers in any commercial roof application.
Emergency overflow roof drains.
Roof drainage 2016 05 11 plumbing mechanical.
The flexible bellows allow differential movement up to 1 2 54 cm in any direction between the roof deck roofing system and the plumbing.
By doni anto october 31 2016.
Emergency overflow roof drains.
Our exclusive dual functional structural deck flange and combination roof drains streamline specifications saving installation time and labor.
Where primary and secondary roof drains are manufactured as a single assembly the inlet and outlet for each drain shall be independent.
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.
Roof drainage 2016 05 11 plumbing mechanical.
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.
Scuppers shall not have an opening dimension of less than 4 inches.