Where should a floor drain be placed?

Floor drains shall be installed in the following areas:

  1. Toilet rooms containing two or more water closets or a combination of one water closet and one urinal, except in a dwelling unit.
  2. Commercial kitchens and in accordance with Section 704.3.

Can you drain a kitchen sink through the floor?





Sink drains can go through the floor if this is considered necessary. As long as it is possible for the sink drain to tie in with the existing drain system of the home, then you will be able to install the sink drain through the floor with relative ease.

Can you run drain pipe horizontally?

Drain piping can be horizontal (1/4” per foot), vertical, or 450- vent piping shall be free of sags and be graded and connected to drip back by gravity to drain pipe it serves.

How far from floor should kitchen drain be?

The standard distance between a kitchen sink drain and the floor is 18 – 20 inches.

Where should drain be in kitchen sink?

Few know, that moving the drain just inches to the right or left of center may provide benefits greater than keeping with the classic center design. Here are three key reasons you can appreciate having an off-center drain in any Havens copper or stainless steel kitchen sinks. Prep, Wash, and Dry at the same time!

Where does kitchen sink drain lead to?





Water that flows from the tap (or appliance lines) and swirls down the drain, with the help of gravity, is directed through a series of pipes that increase in size until connecting to the city’s sewer main line.

How far from wall should sink drain be?

Rough-In Dimension Terminology

Toilet Sink
Supply Line (Horizontal) 6″ max from center 4″ to left and right of center
Discharge/Drain Hole from Back Wall 12 1/2″ N/A
Discharge/Drain Hole (Vertical) 0″ 16″ to 20″
Fixture (Side to Side Buffer) 15″ to 18″ min 15″ to 20″ min

How high should the drain be for a bathroom sink?

between 18 and 20 inches high

The sink drain lines are between 18 and 20 inches high. Water supply lines are usually just a couple of inches higher, between 20 and 22 inches from the floor, and installed to the side of the drain line. The heights are compatible with most of the sinks.

How much pitch does a drain pipe need?



¼ inch per foot

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.

What fall should a waste pipe have?

1 in 40



What is the recommended fall for a soil pipe? The minimum fall for a waste pipe is 1 in 40. The maximum fall is 1 in 110 (apart from vertical pipes but that’s a different story). So pipes with a gradient between 1 in 40 and 1 in 110 should have adequate flow to prevent blockages from occurring.

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 sewer line have to be straight?

You should design your wastewater pipes in a similar manner, for the most part. It’s a bad plumbing practice to have a hard 90-degree bend in a horizontal drain line that’s buried in a slab or otherwise hidden.

Can you put a bend in underground drainage?

Simply enough these are the changes of direction on a drainage system which are usually available from 11 ¼ to 90 degree in most materials, long and short radius bends are available and they can be plain ended as shown below left (clay) or single or double socket (underground plastic).

How do you run plumbing for a sewer line?



Quote from the video:
Quote from Youtube video: For this job you will need a PVC primer and glue a coupling and your adapter so standard plumbing line coming up from like your sink is an inch and a half you'll take your inch and a half adapter.

Can a toilet drain turn 90 degrees?

A toilet drain can have bends. It’s recommended to avoid having a 90-degree bend as this will lead to blockages and unwanted damage. Instead, it’s best to restrict the bend to 45-degrees and then place a straight pipe before adding another 45-degree bend.

How many toilets can be on a 4 inch drain?

3 tank-type toilets, one urinal, 4 sinks. a drinking fountain. 2 Floor drains.

Can a soil pipe have a bend?

Bends. Bends at the base of stacks should be of long radius. Two 45° bends may be used as an alternative.