FHB Logo Facebook LinkedIn Email Pinterest Twitter Instagram Plus Icon Close Icon Navigation Search Icon Navigation Search Icon Arrow Down Icon Video Guide Icon Article Guide Icon Modal Close Icon Guide Search Icon Skip to content
Subscribe

In every issue you'll find...

  • Expert insights on techniques and principles
  • Unbiased tool reviews
  • Step-by-step details to master the job
  • Field-tested advice and know-how
Subscribe Now!
Subscribe
  • How-To
  • Design
  • Tools & Materials
  • Videos
  • Blogs
  • Forum
  • Magazine
  • Members
  • FHB House
  • Podcast
  • Join
  • Log In
Subscribe

Discussion Forum

Discussion Forum

PLUMB AND LEVEL PLUMBING

JohnnytheIntern | Posted in General Discussion on February 22, 2022 09:43am

Okay this is a nube question to the n’th degree, but I cant find information on it anywhere.

I’m a draftsman/designer by trade, working on a small home for myself now. I draw and model everything up a thousand times in by drafting software before I do anything. I’m dropping in pipes now  (digitally of course)…

When plumbing/venting, everything connects to the main drain pipe, which is angled a few degrees (mine 4″ at 1.2 to be precise). All horizontal runs should also have a slight slope. I plan on using PVC for everything. My question is with all the fittings at 90, 45 some 22.5, are pipe never “perfectly” aligned? With glue and all it doesn’t matter? Does one slightly nudge vertical and horizontal runs to fit

On this image from a plumbing article, if the trap arm is has slope to how does it fit tightly to the fittings am I missing something?

Reply

Replies

  1. JohnnytheIntern | Feb 22, 2022 09:48am | #1

    Reference image

    1. mikemahan3 | Feb 22, 2022 12:03pm | #2

      1. These are slip joint fittings and are somewhat flexible. 2. Even if it were level it would either empty into the drain or the trap and not make the slightest difference. 3. Your plumber is not going to pay the slightest attention to your drawings.

      1. JohnnytheIntern | Feb 22, 2022 01:04pm | #5

        Mike,
        1: how about with basic fittings, glue and primer
        2: good point
        3:...i know, i know....

    2. calvin | Feb 22, 2022 12:50pm | #3

      What is this in inch per ft?

      When plumbing/venting, everything connects to the main drain pipe, which is angled a few degrees (mine 4″ at 1.2 to be precise)

      1. JohnnytheIntern | Feb 22, 2022 12:59pm | #4

        1/8" per foot

        1. Tim_William | Feb 22, 2022 01:30pm | #6

          Code for drain pitch is 1/4" per foot, I believe.

          1. JohnnytheIntern | Feb 22, 2022 02:06pm | #7

            For 2.5" diameter or less, diameters of 3-6" a slope of 1/8" per foot is the minimum

Log in or create an account to post a comment.

Sign up Log in

Become a member and get full access to FineHomebuilding.com

Video Shorts

Categories

  • Business
  • Code Questions
  • Construction Techniques
  • Energy, Heating & Insulation
  • General Discussion
  • Help/Work Wanted
  • Photo Gallery
  • Reader Classified
  • Tools for Home Building

Discussion Forum

Recent Posts and Replies

  • |
  • |
  • |
  • |
  • |
  • |
View More Create Post

Up Next

Video Shorts

Featured Story

Building Wildfire-Resistant Homes

13 articles to help you make a new house or existing home safer from the threat of wildfires.

Featured Video

Video: Build a Fireplace, Brick by Brick

Get an overview of the process of creating a traditional-style fireplace that burns well and meets current building codes from experienced mason Mike Mehaffey.

Related Stories

  • Keep Craft Alive Podcast: Ep. 19, Jesse Neumann, Arborist
  • FHB Podcast: Special Edition With Neil Freidberg of Louisiana Pacific and Kyle Stumpenhorst of RR Buildings
  • DeWalt Recalls 12-in. Sliding Compound Miter Saws
  • Podcast 483: Recalled Electrical Panels, Drainage Behind Brick, and Lazy Additions

Highlights

Fine Homebuilding All Access
Fine Homebuilding Podcast
Tool Tech
Plus, get an extra 20% off with code GIFT20

"I have learned so much thanks to the searchable articles on the FHB website. I can confidently say that I expect to be a life-long subscriber." - M.K.

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

BOOKS, DVDs, & MERCH

Shop the Store
  • Outdoor Projects
    Buy Now
  • Code Check Building 4th Edition
    Buy Now
  • Pretty Good House
    Buy Now
  • 2021 Fine Homebuilding Archive
    Buy Now
  • Shop the Store

Fine Homebuilding Magazine

  • Issue 309 - Aug/Sept
    • 10 Steps to Install Crown Molding on Cabinets
    • How to Get Sturdy Walls Without OSB
    • Choosing the Right Construction Tape for the Job
  • Issue 308 - July 2022
    • Pretty Good House Book Excerpt: Copper Farmhouse
    • 10 Dos and Don'ts for Electric In-Floor Heat
    • A Sturdy Rail for Outdoor Stairs
  • Issue 307 - June 2022
    • How to Raise a Post-Frame Home
    • Trimming Deck Stairs
    • Evolving an Energy-Efficient Envelope
  • Issue 306 - April/May 2022
    • Framing Stairs to an Out-of-Level Landing
    • Building a Zero-Energy Home for Less
    • Good-Looking and Long-Lasting Traditional Gutters
  • Issue 305 - Feb/March 2022
    • The Steady Surge in Residential Solar
    • The Fine Homebuilding Interview: William B. Rose
    • How Good Is Your Air Barrier?

Fine Homebuilding

Follow

  • twitter
  • facebook
  • instagram
  • pinterest

Newsletter

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

Membership & Magazine

  • Online Archive
  • Start Free Trial
  • Magazine Subscription
  • Magazine Renewal
  • Gift a Subscription
  • Customer Support
  • Privacy Preferences

Taunton Network

  • Green Building Advisor
  • Fine Woodworking
  • Fine Gardening
  • Threads
  • About
  • Contact
  • Advertise
  • Careers
  • Copyright
  • Terms of Use
  • Site Map
  • Do not sell my information
  • Privacy Policy
  • Accessibility
  • California Privacy Rights

© 2022 The Taunton Press, Inc. All rights reserved.

X
X
This is a dialog window which overlays the main content of the page. The modal window is a 'site map' of the most critical areas of the site. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page.

Main Menu

  • How-To
  • Design
  • Tools & Materials
  • Video
  • Blogs
  • Forum
  • Reader Projects
  • Magazine
  • Members
  • FHB House

Podcasts

  • FHB Podcast
  • ProTalk

Webinars

  • Upcoming and On-Demand

Account

  • Log In
  • Join

Podcasts

  • FHB Podcast
  • ProTalk

Webinars

  • Upcoming and On-Demand

Popular Topics

  • Kitchens
  • Business
  • Bedrooms
  • Roofs
  • Architecture and Design
  • Green Building
  • Decks
  • Framing
  • Safety
  • Remodeling
  • Bathrooms
  • Windows
  • Tilework
  • Ceilings
  • HVAC

Magazine

  • Current Issue
  • Past Issues
  • Magazine Index
  • Subscribe
  • Online Archive
  • Author Guidelines

All Access

  • Member Home
  • Start Free Trial
  • Gift Membership

Shop the Store

  • Books
  • DVDs
  • Taunton Workshops

More

  • FHB Ambassadors
  • Reader Projects
  • Podcast
  • Customer Support

Account

  • Log In
  • Join

Newsletter

Get home building tips, offers, and expert advice in your inbox

Signing you up...

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
See all newsletters
See all newsletters

Follow

  • twitter
  • facebook
  • instagram
  • pinterest

Join All Access

Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features.

Start Your Free Trial

Subscribe

FHB Magazine

Start your subscription today and save up to 70%

Subscribe

We hope you’ve enjoyed your free articles. To keep reading, become a member today.

Get complete site access to expert advice, how-to videos, Code Check, and more, plus the print magazine.

Start your FREE trial

Already a member? Log in