Can you use a 1 1 2 inch pipe for shower drain?

For more than 20 years, many plumbing codes have listed the minimum shower drain as 1 1/2 in. This was based on the lowering of the showerhead flow rate to 2.5 gal. per min. As the plumbing engineers pointed out, a 1 1/2 in.

Can you shower with 1.5 inch drain?

Current plumbing codes (IPC as well as MA Plumbing Code 248 CMR 10 for instance) need 1.5 inches to drain for a tub with a shower. The tub can drain at leisure and the shower function when in utilize, with flow-limiting showerheads, fall within the flow rate that a 1.5” drain can handle.

Can 1 1/2 PVC be used for a shower drain?

A 1 ½ pipe can be used for shower drain in some areas. It is effective for draining water in small bathtub areas but may overflow the shower base if the water flow is high. Though a 1 ½ pipe is not as efficient as a 2 inches shower drain pipe, it would suffice in small areas.

What size should drain pipes be?

Toilet drain pipes are usually 3 inches in diameter. Washing machines and laundry sinks generally need 2-inch drain pipes. Shower and bathtub drain pipes are usually 2 inches in diameter. Sinks usually require a 1.5-inch drain pipe.

Does a shower require a 2 inch drain?

A 2-inch pipe is the recommended size because showers have a low threshold for flooding, and a 2-inch pipe helps the water drain faster than does a 1 1/2-inch pipe. So, if you are converting from a tub and shower combination to a shower, you’ll likely have to change the drain pipe size.

Does shower drain need a trap?

According to regulations, all shower drains are required to have P-traps. This includes all fixtures connected to a building’s main plumbing system. P-traps are curved pipes installed under showers and drains of all kinds.

How many gallons per minute can a 2 inch drain handle?

1106.2 Size of Storm Drain Piping

PIPE SIZE (inches) CAPACITY (gpm)
2 34 44
3 87 111
4 180 231
5 311 331

How far can P-trap be from tub drain?

Plumbing Codes

P-Traps must connect to the same size drain outlet, with a diameter of at least 1.5 inches. The vertical distance from the fixture to the trap can not exceed 24 inches. The horizontal distance from the fixture to the trap should not exceed 30 inches.

What size is bathtub drain pipe?

According to Bonnets Stems and Accessories, Inc., a standard modern bathtub drain is 1 1/2 inches in diameter – the width straight across the middle. Rough-in plumbing should be calculated for a 1 1/2-inch pipe.

Can I use a 2 inch P-trap for a bathtub?

The proper size for both a bathtub drain and trap is 1 1/2 inches in diameter, regardless of the bathtub size. The type of trap used on a tub drain is a p-trap. Because they are the same size, the trap will glue directly onto the PVC drain pipe without the use of adaptors or fittings.

How do you install a P-trap in a shower drain?

How to Remove and replace a Shower Drain P Trap …

What is a shower drain flange?

This PVC Drain Flange Coupling connects the waterproof membrane on a low-profile shower drain to the plumbing beneath. This durable connector is created specifically for tile floors and works with the following shower drains: Werner Square, Effendi Linear, Siewart Linear and Loup L-Shaped Linear.

Is 3 inch drain OK for toilet?

In new construction, 4-inch drains can be installed from every toilet, or you can run a 3-inch drain line from a toilet to the home’s main 4-inch drain pipe — the line running from the house to the sewer or septic system. Older homes may have only 3-inch drains, so that’s what you have to work with.

How many fixtures can be on a 3 inch drain?

710.1 Maximum Fixture Unit Load

DIAMETER OF PIPE (inches) MAXIMUM NUMBER OF DRAINAGE FIXTURE UNITS (dfu)
11/2 3 8
2 6 24
21/2 12 42
3 20 72

Can a shower and toilet share a vent?

Wet vents are typically used when plumbing a bathroom group. So yes the shower can also be vented by the wet vent along with the toilet. There is one major stipulation when wet venting multiple fixtures when a toilet is one of them: the toilet must be the last fixture connected to the wet vent.

Will a shower drain without a vent?

Without a vent, your shower won’t drain correctly. While a shower usually requires a 2-inch drain pipe, the vent pipe must be either 1 1/2 inches or 2 inches depending on local requirements.

How much fall does a shower drain need?

In a stall shower, the plumbing code requires the floor to be sloped one quarter (1/4) of an inch per foot in order to carry the water effectively to the drain. This slope, according to the TCNA Handbook is called “sloped fill” or commonly known as the pre-slope.

Can you put a 90 in a shower drain?

How to Install Shower Drain Pipe Part 1

Can a shower and sink share a drain?

1:Can multiple bathroom sinks, baths, showers ect share a common drain pipe ? Yes they can and do all the time.

What size is a shower P-trap?

Trap Size. The usual size for a shower drain trap is 2 inches, which is the diameter of the trap. This size is the minimum size that is allowed, which means that you cannot install a trap with a smaller diameter, or the trap is not within code.

How many GPM will a 3/4 pipe flow?

Water Flow (GPM/GPH) based on Pipe Size and Inside/Outside Diameters

    Assume Average Pressure (20-100PSI). About 12 f/s flow velocity
Pipe Size (Sch. 40) I.D. (range) GPM (w/ min. PSI loss & noise)
1/2″ 0.5 – 0.6″ 14
3/4″ 0.75 – 0.85″ 23
1″ 1 – 1.03″ 37

How much water can flow through a 2 inch drain pipe?

2-inch pipe: 850 gallons per minute.

How many GPM can flow through a 2 inch pipe?

Metric PVC Pipe

    Assume Average Pressure. (20-100PSI) About 12f/s flow velocity
1.25″ 1.25-1.36″ 62 gpm
1.5″ 1.50-1.60″ 81 gpm
2″ 1.95-2.05″ 127 gpm
2.5″ 2.35-2.45″ 190 gpm

How far below the shower drain does the P-trap have to be?

The maximum distance between the shower drain and the P-trap is 5 feet. However, the P-trap should be as close to the shower drain inlet as possible. You should even have the P-trap directly under the shower drain for the best results.

Does trap have to be directly below drain?

It is not ideal to have the p-trap below the the exit drain because water gravity has to force the water out instead of it flowing downwards naturally. They both work and have seen it many times. But essentially anything below already creates its own p-trap- so using another is redundant.

What does the P stand for in P-trap?

A P-trap gets its name because it combines two 90 degree joints with a horizontal overflow pipe and gives the entire unit the shape of the letter “P.” One of the 90 degree joints exits the drain of the sink and then is joined to another which contains a water seal system that allows for water to flow into the overflow …

What size of drain is required for a combination tub shower?

A 1 1/2-inch drain pipe and P-trap is required for tub and shower combinations. It is better to have a 2-inch drain pipe. A 2-inch drain and P-trap is required for shower only units.