Draw Riser Diagram

Draw Riser Diagram

By: Tim Carter

You need to draw a riser diagram to get a plumbing permit. This drawing is a good idea because it proves to the plumbing department that you have a clear idea of the correct pipes to put in your home.

You should follow all of the code requirements in the Uniform Plumbing Code when you draw your riser diagram.  A building inspector will FAIL your drawing if you draw the wrong drain, waste, and vent pipes.

What Does a Riser Diagram Look Like?

A riser diagram is a three-dimensional drawing that shows all the drain, waste, and vent pipes in a home or business. The pipe sizes are all shown on the drawing.

It is a good idea to have general notes on the drawing that speak to the slope of drain pipes, the height of toilet flanges above a finished floor, and the proper way to support pipes so they don’t act as beams.

riser diagram plumbing
This is a typical riser diagram. Copyright 2024 Tim Carter

Who Draws Riser Diagrams?

I happen to draw them. I love doing it. I’ve been a master plumber since 1981 and to me drawing a riser diagram or plumbing isometric drawing is like solving a crossword puzzle.

Call Tim Carter now if you want me to draw your riser diagram in days: 603-470-0508

tim carter master plumber

What do Riser Diagrams Show?

A riser diagram for plumbing drain, waste, and vent (DWV) piping shows:

  • all drain pipes
  • all waste pipes
  • all fixture vent pipes
  • the building drain
  • general notes
  • pipe sizes
  • code-approved pipe connections

How Long Does it Take to Draw One?

I can draw a riser diagram in as little as 24 hours if you have an emergency. It normally takes five business days to draw a riser diagram because of the other orders already in the queue.

Mechanical engineers might take weeks to produce this drawing.

Are Building Drain Layouts Important?

Yes, a building drain layout is very important. Non-plumbers almost always install the wrong fittings that cause serious clogs.

If you’re a DIY plumber, you should seriously consider asking me to draw your Building Drain Layout drawing.

Where Can I Get DIY Phone Coaching Help?

I offer DIY phone coaching. I’ve helped many homeowners over the phone install all the pipes in their homes. My favorite job was helping Zoe, a 28-year-old woman, in New Mexico with all the plumbing in her rural new home.

You can hire me for 15 minutes at a time and do either a voice or video call. Using video, I can see exactly what you’re up against to give you the best advice.


tim carter master plumber seal