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The trap outside a structure would be a Storm type where there is little possibly of freezing and it must be a deep seal type to prevent evaporation

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Q: What is the plumbing trap outside the house used for?
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What is a trap house?

A trap house is a place usually in the ghetto used to sell all sorts of drugs and has nothing to do with plumbing, mice or rats


Which is the most common used trap in plumbing?

a "p" trap


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Can drano be used in plumbing pipes outside?

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What is a legal and common used trap?

building codes in the jurisdiction may require you to use a certain type of trap in certain plumbing designs.A bell trap is used in floor drains (although this particular trap is sometimes erroneously installed in a drainage system).Answers.comAnswers.comAnswers.com. So is a drum trap. S traps are much more common.A p trap is used for sinks


What is a legal and commonly used trap a bell trap a S trap a drum trap or a P trap?

Two types are traps are commoningly used in civilized areas with model codes. P traps used for fixtures and Running traps used for storm or main house sewers


Where is copper pipes used in houses?

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An S trap is a length of water plumbing pipe used under sinks. The pipe is shaped like an S and prevents the pipe from becoming air locked. An air locked pipe cannot drain.


What are some terms used in plumbing?

In plumbing, a trap is a U-, S-, or J-shaped pipe located below or within a plumbing fixture. An S-shaped trap is also known as the S-bend invented by Alexander Cummings in 1775 but became known as the U-bend following the introduction of the U-shaped trap by Thomas Crapper in 1880. The new U-bend could not jam, so, unlike the S-bend, it did not need an overflow. The bend is used to prevent sewer gases from entering buildings. In refineryapplications, it also prevents hydrocarbons and other dangerous gases from escaping outside through drains.The most common of these traps in houses is referred to as a P-trap. It is the addition of a 90 degree fitting on the outlet side of a U-bend, thereby creating a P-like shape. It can also be referred to as a sink trap due to the fact it is installed under most house sinks.Because of its shape, the trap retains a small amount of water after the fixture's use. This water in the trap creates a seal that prevents sewer gas from passing from the drain pipes back into the occupied space of the building. Essentially all plumbing fixtures includingsinks, bathtubs, and toilets must be equipped with either an internal or external trap.Because it is a localized low-point in the plumbing, sink traps also tend to capture heavy objects (such as jewelry) that are inadvertently dropped into the sink. Traps also tend to collect hair, sand, and other debris and limit the ultimate size of objects that will pass on into the rest of the plumbing, thereby catching over-sized objects. For all of these reasons, most traps can either be disassembled for cleaning or they provide some sort of cleanout feature.