Washington state plumbing codes

What plumbing code does Washington state use?

Authority: The Uniform Plumbing Code (Chapter 51-56 WAC) is adopted by the Washington State Building Code Council pursuant to Chapters 19.27 and 70.92 RCW. This code was first adopted by reference by the Washington State Legislature in 1974.

Is an air gap required in Washington State?

The air gap is required in Washington State . Each kitchen sink gets one. In some areas, a high loop is the minimum requirement , but in many other jurisdictions, an air gap must be installed with all new dishwashers.

What is the latest plumbing code?

The 2021 National Standard Plumbing Code –Illustrated provides the latest information about common materials, fixtures, devices and equipment systems used or installed in plumbing systems. The NSPC contains revisions that have been included to promote sustainable plumbing practices.

What is code for sewer pipe?

4″ Sewer pipes are required to have a minimum slope of 1/8″ per foot. Using 1/4″ per foot allows them to carry more DFUs ( Drain Fixture Units). For 2″ and 1.5″ pipes you should use 1/2″ per foot. Note that IRC 2009 does not specify a maximum slope.

Do I need an air gap if I have a garbage disposal?

Yes According to the Bosch website,They are requiring air gaps per local codes to prevent backflow. “To prevent back flow into the dishwasher, connect drain line to an air gap or use a 30″ high drain loop, depending on local codes.

Do modern dishwashers need an air gap?

Air gaps are the most effective means of preventing your drain from cross-contaminating your dishwasher with waste. If you want to protect your dishwasher from flooding with contaminated water, you need an air gap . Dishwasher air gaps are also required by plumbing codes in many locations.

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How do I find local plumbing codes?

Before you get started, learn where to get the plumbing code requirements for your area, so you’re sure to pass inspection. Visit your town hall. Go online and visit your town or state government’s page to see what codes or versions of federal recommended codes your state or town uses. Visit your local library.

Why are plumbing codes important?

Plumbing codes help ensure the proper performance of plumbing systems. That’s it. By doing so the codes make for more efficient systems while safeguarding the health and safety of the public. To put it as simply as possible, plumbing codes help ensure the proper performance of plumbing systems.

What is the difference between UPC and IPC?

Missouri has adopted the Uniform Plumbing Code ( UPC ) developed by the International Association of Plumbing and Mechanical Officials. New York has adopted the International Plumbing Code ( IPC ) developed by the International Code Council.

Are saddle tees code?

Saddle tees are strong, reliable, and easily installed. It is an artifact of ignorance if they are not allowed into the code . Perhaps the reason they remain prohibited by code is they routinely fail in applications where they are allowed. Hence due to their unreliability they remain an illegal connection

How many toilets can be on a 4 inch drain?

3 tank-type toilets , one urinal, 4 sinks.

Where are Cleanouts required?

A cleanout is only required on the building drain as it is defined in Chapter 2: Building Drain – “That part of lowest piping of a drainage system which receives the discharge from soil, waste and other drainage pipes inside the walls of the building and conveys it to the building sewer beginning two feet outside the