To stop sewer gasses from being expelled from the sewer
One word for a water trap in a street is a drain.
A silt trap is a designated area where water that is contaminated with suspended sediment as a result of construction activity or water runoff is contained. While the water is in a silt trap, the sediment can settle to the bottom of the trap until it can be removed.
The trap should be before the vent. The trap is used to maintain a watter barrier to prevent waste water and sewer gasses from entering the home. The vent is use after the trap to allow the water to flow freely in the pipe with out drawing the water from the trap.
Same thing
heath
The trap is in the toilet. There shouldn't be one in the drain itself.
A gully trap is a way of removing waste water before it is returned to the sewer. The gully trap collects waste water from the kitchen and bathrooms.
Because the weight of the water in the trap must be greater than the esp or the trap will be ineffective,and the trap size dictates how much water it can hold thus determining the weight.
A trap primer line is typically connected to the domestic cold water line, not the DWV system. Its purpose is to prevent evaporation of water in floor drains or traps by periodically supplying small amounts of water. In some cases, local plumbing codes may dictate specific requirements for trap primers.
resealing a P trap is by simply adding water to the trap. If you have a P trap that is not being used for a long time then the trap will go dry. A quick fix for traps that don't get used very much is to pour a little vegi oil after you pour some water and that will extend the time of your trap going dry.
photosynthesissunlight (which the leaves trap)+CO2+Water = Oxygen+Glucose
A P trap goes thru the wall, an S trap goes thru the floor.