Want this question answered?
Most of the one's I have run across do not have an overflow. Mainly used for disposal, dumping out drinks, etc, not for washing so overflow not really an issue. Also, most are stainless which do not lend themselves to an overflow drain.
Usually. Going through the overflow drain gets you straight into the drain without having to make the sharp bend in the tub drain. There could be a trap that comes apart in the drain underneath if it is accessible.
The sewer
YES, you do need a trap. Usually the bathtub drain is on the same sewer line as the nearby toilet.The smell from the toilet's discharge will sneak up through the bathtub's drain line without a trap ... not pleasant!.
create something like a hole or drain that can drain out the water
Typically right under the faucet in a bathtub is a round metal piece with holes. This is an overflow outlet. It connects to the bathtub drain. If water rises over that disk, it will go through the overflow...so your tub does not fill completely and overflow the edge of the tub. The overflow prevents accidental flooding of the bathroom.
Its your bathtub drain.
A quick way would be to drop into a plumbing supply store. They often have tubs on display with the overflow drain hooked up. You will be able to see where the overflow water goes down the drain. Des Perado
AnswerIt may not, but it should. The International Residential Code gave this clarification: "Yes. An overflow is required to remove displaced water when a bather enters the bathtub or to protect against accidental flooding resulting from an unattended filling operation."Most tub drains lead to the same outflow pipe as the bottom drain, so if the pipe has a blockage, it will do no good. Also, the rate of flow of water into the tub can exceed the ability of the over-flow drain to keep up.
In my experience, I would say no. Several reasons can prevent the overflow from working. Since the overflow of the sink is rarely used it has a tendency to be blocked at the lower portion where the sink joins the drain pipe. During normal use and over years the holes in the sink drain at the point where the overflow and drain pipe meets has a tendency to clog making the overflow drain slowly. You can notice this when your sink drains with a "gulping" sound. You can test the overflow drain and see how obstructed it is, but do it slowly and do not turn on the faucets on full.
Do you have the tub where you can measure it? If so, measure from the back of the tub to the center of the overflow, that will give you the measurement for the drain.
NO -- you will have to open up wall behind tub to see where it is leaking from.
You hire a plumber to put in a one way sewer drain valve.
There is an overflow pipe on every tub. There is no further need to vent.
The overflow is built into the sink, it is not part of the drain. If there is no overflow, you can not add it.
It either goes into the ceiling undetected for a long time Or it can go down the over flow past the stopper and into the drain line depending on whom did the installation
In this usage, "bathtub" is an adjective, modifying the noun "drain."