They will either be a part of the primary drainage system or they will be a part of the secondary overflow drainage system a primary drainage system is designed to remove water from the roof as quickly as possible.
Roof drainage scupper.
The roof is sloped toward the scuppers and water simply drains out through the scuppers.
Flat roof drainage system specifications designs troubleshooting problems solutions for interior drains on flat building roofs flat roof drains scuppers and screens questions answers about keeping the flat roof drainage system working or about installing new drains in a flat roof.
Round x 12 in.
The factors which affect proper roof drainage are deck slope drain flashing size and placement of drains.
Scupper drain 3 1 2 inch od round x 12 long drain with 4 inch outer face and front lip.
Scuppers are used to provide an outlet through parapet walls or gravel stops on flat and built up roofs to allow drainage of excess water.
Scuppers will play one of two roles in a roof system.
They can be used in conjunction with gutters and downspouts to divert the flow to the desired location.
26 gauge galvanized soldered face connection.
3 where the height of the parapet is more than 150 mm or exceeds the height of the adjacent wall flashing a emergency roof overflows or scuppers described in clause 2 c shall be provided and b there shall be a minimum of two roof drains.
Wide mouth scuppers are the best for draining water off a flat roof.
Debris and small objects will not get stuck.
1 2 3 next 2 review s scupper rnd3 5x12.
Drains scupper roof drains side outlet drains sheet metal.
E there is at least one drain for each 900 m 2.
An overflow drainage system will be designed to function independently of the primary system to drain water from the roof.
Scuppers are open holes or channels cut into the roof edge or parapet.
The full flow capacity of a drain is not realized until the water reaches approximately 2 5 inches above the inlet in a four inch drain and 3 5 inches in a six inch drain.
Scuppers can be installed to carry water into gutters or directly into downspouts through conductor heads.
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.
Scuppers are commonly used on flat roofs that have a parapet or other type of perimeter barrier enclosing the roof.