Overflow Scuppers Roofs

Scuppers shall not have an opening dimension of less than 4 inches.

Overflow scuppers roofs.

Installing overflow drains to the same lines will eliminate flow due to the primary drains constraints. Discover time off the roof benefits with scuppers and pitch pans from exceptional metals and duro last. They are often too small by factors of two or three or more and in the case of overflow scuppers they are often positioned two or three times too high. These metal accessories come with membrane welded to them reducing installation time and providing a clean aesthetically pleasing finish.

Scuppers shall not have an opening dimension of less than 4 inches. Flat roofs that do not drain over the roof edge and roofs that have parapet walls must utilize roof drains to get the water off the roof. Scuppers can also be provided as primary or secondary drainage points. Where you have roof drains you are also required to have overflow drains.

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. In short a scupper is a detail that provides drainage to a roof system by allowing the water runoff from the roof to exit the roof through a metal edge parapet wall or through the deck into a downspout or leader not run through the interior of the building. In effect these roofs represent nightmares just waiting to play out in real life. The detail shows an alternate method of constructing either type of scupper.

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. 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. This is especially true whenever scuppers are used for primary drains and or overflows. The sides of the flange are sealed against the masonry.

Overflow drains and scuppers roof drainage. The scupper is locked and soldered to the closure flange on all sides. The top of the roof side flange is extended into a masonry joint. On the roof side overflow scuppers can be detailed similar to detail 10 5d.