Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing


Thread Tools Search this Thread Display Modes
Old 12-01-2012, 10:02 PM   #1
Join Date: Feb 2009
Posts: 291
Share |

Trap on main sewer line?

After hurricane sandy destroyed my basement with backed up sewer water, we decided to put a backwater valve on our main sewer line. Our main sewer lines comes into the house about 2' below our basement floor, and is accessible in a "pit" near the front of my house. Coming into my house I have a 4" cast iron pipe, which then attaches to a double trap ( it has two clean outs) then there is a tee which goes to a vent. the vent and everything after that is PVC. I have been told that plumbing codes no longer require traps on the main sewer line by some plumbers, others tell me I need one. I am located in Staten Island, NY. I would be very happy if I was not required to have one, because I could take out the trap and Put in the backwater valve. If I need the trap then that means a LOT of breaking of cement. Any advice on how to proceed? Should I take out the trap? The house is about 15 years old. There are no drains without traps anywhere in the house.

Thank you!

mazzonetv is offline   Reply With Quote
Old 12-01-2012, 10:44 PM   #2
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,946

Trap on main sewer line?

You will need to check your local building code or plumbing code. In general a master trap for the building is not needed nowadays.

Stop wasting time re-adjusting the pattern. Have several lawn sprinklers, one for each pattern.
AllanJ is offline   Reply With Quote
Old 12-02-2012, 08:05 AM   #3
Join Date: Apr 2007
Posts: 525

Trap on main sewer line?

I was surprised to reach the end and see that your house is only 15 years old. I usually only see house traps on much, MUCH older buildings. But, as AllanJ said, you'll have to consult your local plumbing codes and/or inspector.
Ishmael is offline   Reply With Quote
Old 12-03-2012, 03:20 PM   #4
Join Date: Feb 2009
Posts: 291

Trap on main sewer line?

Thank you - the building department is insanely jammed over here with all the hurricane damage. I asked four plumbers now. 2 say yes and 2 say no... I need a tie breaker...=)
mazzonetv is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
odd sewer main clog mkIIslowrider Plumbing 5 04-01-2012 09:45 PM
Tap 2" Drain Pipe into 4" PVC Main Sewer Drain Pipe brmatthews Plumbing 3 12-20-2010 07:49 PM
exposing main line under concrete wopachop Plumbing 3 03-07-2008 11:59 PM
Main Sewer Line repair Unregistered Plumbing 3 03-14-2005 07:10 AM
sewer main line repar Babar Plumbing 1 01-26-2004 06:39 AM

Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.