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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.
What size pipe is standard for tub drain?
Down the Drain 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.
What kind of pipe do you use for a tub drain?
Tub drain assemblies are commonly made from one of three different pipe materials: brass, ABS (acrylonitrile butadiene styrene) plastic, or PVC (polyvinyl chloride plastic). Tub drain assemblies can be joined with slip fittings (brass, ABS, or PVC), or with solvent-glued fittings (ABS or PVC only).
Can I use 1.5 inch pipe for shower 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.
What is the minimum size pipe for a shower drain?
The minimum size for a shower trap drain is 2 inches if it is a new installation. If you are replacing an older shower or tub, you might find that the existing trap and pipe are 1 1/2 inches.
Does a tub drain need AP trap?
P-traps are S-shaped pipe components that keep toxic sewer gases from escaping into your residence. They are required on all plumbing fixtures, including sinks, tubs and showers. A bathtub trap begins at the end of the tub drain assembly, where it is glued onto a fitting screwed to the drain outlet.
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!Mar 24, 2011.
Why is ABS pipe no longer used?
Manufacturers used the regrind or recycled plastic as a way to reduce costs and make ABS pipe more competitive with PVC pipe (which has a lower resin cost than ABS); it was generally not done for environmental reasons. Nov 1, 1994.
What size is main drain line?
Sewer drains from laundry sinks or washing machines are 2 inches in diameter and those from sinks in the kitchen, bathroom or powder room generally use a 1.5-inch pipe. The main sewer pipe leading to the septic tank or public sewer is usually 4 inches.
Are all tub drains the same size?
Thanks to the standardization, any bathtub drain can fit any standard bathtub between 14 and 26 inches in depth. The size of the drain is standardized because it needs to fit to the P-trap, which is the next component of the drain.
Are tub drains universal?
Bathtub drains are 1 1/2 inches wide and fit all standard bathtubs ranging from 14 to 26 inches deep.
What is the standard pipe size for a shower?
The standard thread size for shower heads in the US is 1/2 inch. You don’t have to worry about fitting since the size of shower head threads is standardized.
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 much slope 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.
What size is a tub p-trap?
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.
Does a tub need a 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.
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 far can a vent be away from a drain?
For a 1- 1/2-inc pipe the vent must be 42 inches away at the most while a 2-inch pipeline must have an optimum distance of 5 feet. For pipelines that have a diameter of 3 inches the range is 6 feet and for a 4-inch pipe the most it should be far from the vent is 10 feet.
