Measure straight down from the center of the overflow to the point at which the drain is mounted to the tub: depending on what’s easiest to get to, you can measure from outside the tub down to its underside, or from inside the tub to the tub floor. Do not follow the curve of the tub; measure straight down.

What size pipe is standard for tub drain?

For a bathtub drain pipe, the correct size is almost always a minimum of 1 1/2 inches, as set by code. However, in other areas, codes set the minimum tub drain pipe size at 2 inches.

Can a shower drain be 1.5 inches?

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.

What size is a sink drain pipe?

Some older sinks may have drains that connect to a 1 1/4-inch tailpiece, but most modern drains have a 1 1/2-inch outlet. All the pipes that connect to the tailpiece, including the P-trap assembly and all the horizontal extensions, are either 1 1/4 or 1 1/2 inches in diameter.

Are bathtub drain locations standard?

The position of the tub drain will vary, depending on the size and design of the tub, and you’ll need to cut an access hole in the floor at the drain end of the tub to allow for positioning and installing the drain line. This hole should be 9 inches wide and extend at least 12 inches from the wall.

How big is a bathroom sink drain?

Most sources claim that the most common size for the sink drain hole is 1 1/4 inches, although some cite 1 1/2 inches as the standard. These two sizes are the most common, explains Bathroom Vessel Sinks, although you may also see sinks with a 1 5/8-inch drain hole.

What size should a bathroom sink drain be?

The standard size for a bathroom sink drain pipe is 1.25 inches in diameter. However, this is determined based on your state’s housing code, and you may find that they suggest 1.5 inches or 1.65 inches in diameter, and your home has been built with this plumbing standard.

What diameter is a shower drain?

The majority of shower drainpipes are two inches in diameter, but if you have two-inch drains and you run into a three-inch drainpipe, you’ll be making another trip to the plumbing supply store.

How do you measure a drain pipe?

NOMINAL PIPE SIZE (inches)ANY HORIZONTAL FIXTURE BRANCHANY ONE VERTICAL STACK OR DRAIN11/2b342b61021/2b122032048

What is code for shower drain size?

Shower drains shall have an outlet size of not less than 11/2 inches (38 mm) in diameter.

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Can a tub and shower share the same drain?

Yes, they will both be using the same drain pipe at somepoint inside or outside of your house. But the the pipes must join well below the level of both items or the pipe must be large enough for the combined flow, otherwise when you put water down one of them, it will flow out of the other!

How far does a bathtub drain need to be from the wall?

You will need to cut a hole in the floor at the drain end of the tub to position the tub drain and install it. The hole should be at least 9 inches wide and 12 inches from the wall.

Are all tub drains in the same place?

All bathtubs drain in basically the same way, with a drain assembly located on the bottom of the tub linked to an overflow that may or may not have a toggle switch. When the plunger or stopper is opened, water drains out of the bathtub, through the drain assembly, down a tailpiece and into the trap.

Does a shower drain need a P 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. … This pipe really is an essential component in your home’s plumbing system.

How far can p-trap be from tub drain?

Maximum Distance According to the International Residential Code, the maximum vertical distance between the sink drain and the entrance to the p-trap is 24 inches.

Does tub drain need vent?

Bathtubs should have a vent to help drain wastewater properly. All drains in your bathroom, from your bathtub to your toilet, need a plumbing vent stack. Without a proper vent, you may hear gurgling pipes, smell a putrid odor, or notice slow-draining water.

Can a shower drain be connected to a sink drain?

The shower and sink can use the same drain pipe if it is well below the sink and shower level. The pipe must also be big enough to handle the combined water flow because if not, you will run the water’s risk to flow from the pipes of each other instead of it flowing out.

How close should vent be to shower drain?

According to the UPC, the distance between your trap and the vent should be no more than 6 feet. In other words, for the vent to work properly, it needs to feed into the drain line within 6 feet of the trapways that connect to it.

How much slope should a bathtub drain have?

The ideal slope of any drain line is ¼ inch per foot of pipe. In other words, for every foot the pipe travels horizontally, it should be dropping ¼ inch vertically. Many drains either have too little slope or too much slope. That’s right, it is possible to have too much slope in your drain lines.

How do you measure a bathtub drain stopper?

Measure from the piping section where it branches out toward the drain over to the drain hole and write that horizontal distance measurement down. That will give you the length and width that is needed for your drain. Your local hardware or home improvement store should carry a bathtub drain that fits your needs.

Is a brass drain better than PVC?

PVC drains are generally more flexible, though brass, among the metals used for drains, is the most malleable. PVC is lightweight and easier to work with, whereas brass often requires more specialized labor. … They are also known for tight fittings, making them more waterproof and leakproof than brass.