Emergency Floor Drain Venting

The venting requirements for a floor drain that meets specific criteria like those mentioned above.

Emergency floor drain venting.

The true vent is aligned vertically and attaches to your drain line through the roof. If the drain line runs away from the wall where you want the vent use a reducing y and a 45 degree street elbow to point the vent line toward the wall. These emergency drains are not to be confused with the drains in table 7 3 of the los angeles plumbing code 2014 edition. The horizontal vent pipe runs right next to the closet bend.

If a floor drain is between 450mm and about 12 and tie directly into the sbd which has to terminate at it s upstream end in a minimum 3 stack to open air it need not be vented. They are intended solely to receive water from automobile drippage fused sprinkler heads ruptured piping and other similar conditions. This is the purpose of a venting system. Through the stack sewer gases are carried up to the roof through vent lines.

This is best implemented if a fixture rests close to the stack and the top floor of your home allowing the stack to serve as a vent. True vents also have no water running through them. Toilet vent option 1. If the toilet drain does not connect directly to a vent you must find another way to vent it.

Another thing to consider is pitch. Drain pipes take the wastewater to the soil stack. Behind the wall where you can t see a vent line and drainpipe lead to a soil stack which is the control center of the wastewater system. The drain in the toilet bowl is basically a p trap.

Roof flashing made from heavy grade rubber lead or sheet metal holds the vent pipe in place. Emergency drains are floor drains within a building and serve only the area used for parking of motor vehicles. If the drain lines in your home have poor venting as in figure a for example water rushing down the drains will pull water from nearby p traps. Venting allows water to pass out of the drains easily.