They allow water to run through the wall via a metal box protecting and surrounding the scupper.
How to do roof drainage.
To put it simply scuppers are openings in the outer walls or curbs along the roof line.
Step by step instructions step 1.
Commonly used on flat commercial roofs siphonic drains allow for a minimal number of drains and all of the drains can be connected to a single leader.
Before commercial drainage layers were developed it was common practice to use a thin layer of gravel to act as a drainage layer.
Determine leader or pipe size.
They catch rainwater as it rolls off the edge of the roof and divert the water into a downspout that dispenses it a safe distance from the foundation of the building.
Not enough drains will cause a problem with water building up.
2 3 4 5 6.
Where the tube passes by the downspout from the gutter we installed a y fitting and drained the roof water from the gutter system directly into the main drainage line.
A siphonic roof drain utilizes siphoning as a drainage mechanism resulting in drainage that is faster than that on any other type of roof drain.
Stormwater flows away from the building naturally to storm drains or in some cases to the street.
For flat sites it may be necessary to drain into a drywell or french drain system or into a pumping chamber that sends drainage to a remote storm drain or drywell.
One of the main concerns that small scale builders have outlined to us is how to drain the roof.
Taking care of your drainage.
2 3 4 5 6 and 8 in.
For most single family residences the roof is pitched allowing rainwater to flow by gravity to a gutter system and discharge to grade.
Determine 100 year 1 hour rainfall rate used for location of building select number of roof drains and calculate the roof area sloped to each drain size horizontal storm drainage piping.
Gutters are the most commonly used and most cost effective drainage solution for flat roofs.
Ipc provides four steps to size the roof drains on a building.
Gravity drainage stormwater simply drains off the roof and other areas to the ground.
Please refer to part 2.
Siphonic roof drain.
A french drain is a small trench with a perforated pipe surrounded by sand or gravel that directs the water flow away from the foundation following the grade.
Not only will it get the water away from the house but it will also do it without any possibility of water runoff damage or erosion.
See french drains for details of handling roof runoff at flat or poorly drained sites.
Be sure there is an adequate and appropriate number of drains for the size of your roof.
The guide gives rational to the whys and hows of allowing free drainage.
Calculate the total roof area by multiplying its length by width.
Calculate total roof area.
