How deep is a sewer line? - Pirate4x4.Com : 4x4 and Off-Road Forum
 
Pirate4x4.Com : 4x4 and Off-Road Forum  

Go Back   Pirate4x4.Com : 4x4 and Off-Road Forum > Miscellaneous > General Chit-Chat
Notices

Reply
 
Share Thread Tools Display Modes
Old 02-09-2004, 11:18 AM   #1 (permalink)
Registered User
 
Moby's Avatar
 
Join Date: May 2003
Member # 19981
Location: Orangeless County, California
Posts: 63
How deep is a sewer line?

I have a friend that is going to redo the sewer pipe from the house to the main sewer line, as soon as we find it.
Does anyone know how deep a pipe is typically buried? We have been digging trenches all over the front yard and we cannot find it. We started where he thought it would be, he has a 15í long, 6-8í deep trench now and no pipe.
We have the blueprints from the city; it shows where the pipe is supposed to come in from the street. So we started there, now we have a new 6x6 trench w/ no pipe. Since itís doesnít freeze here I donít think it has to be as deep as it does in other parts of the country. Any advice from the all-knowing Pirate board? Does anyone have experience?
This project has been going on way to long now; the neighbors are starting to get hostile.

for advice.
__________________
JAFN
Moby is offline   Reply With Quote
Old 02-09-2004, 11:21 AM   #2 (permalink)
Registered User
 
NastyNate's Avatar
 
Join Date: Aug 2002
Member # 13276
Location: Chattanooga, TN
Posts: 624
Send a message via AIM to NastyNate
Can you get under the house to see where it exits? That should give you an idea. If not, find the nearest manhole and remove the lid. See how deep the inverts are coming and going. Your service line shouldn't be but about 1' higher close to the main line, then tapering up to the house. Typically around 3'-5' deep, unless the sewer main is really deep.
__________________
Those who give up a little freedom for a little security, WILL SOON LOSE BOTH AND DESERVE NEITHER!
NastyNate is offline   Reply With Quote
Old 02-09-2004, 11:21 AM   #3 (permalink)
Rock God
 
dan58's Avatar
 
Join Date: May 2003
Member # 19330
Location: Easton, PA
Posts: 1,977
Send a message via AIM to dan58
Your best bet is to trace the line from inside the house. The pipe will be about 4" coming from the house. If it's an old house, look for cast iron. New ones will be white PVC. Laterals can also be found by looking for the cleanout. It should be a metal or PVC pipe, laying either flat on the ground or sticking up slightly (6") to avoid lawnmower incidents.
dan58 is offline   Reply With Quote
Old 02-09-2004, 11:24 AM   #4 (permalink)
Registered User
 
Join Date: Jun 2001
Member # 5381
Location: Silicon Gulch, CA
Posts: 152
Typlically sewer laterals (the line from the house to the main on the street) are relatively shallow, 6 feet or so from the surface. But there really is no set rule, they may have had to lay them very low to avoid other things underground (storm drains, power, water, etc) or they could be very deep in order to maintain the slope needed for adequate flow velocity.

You know where the alignment is from the plans you gut, just keep going deeper, you'll find it. Be careful though, the 4 or 6 inch clay pipe they are made of isn't the toughest stuff, don't wanna break it. EEWWW
RockHammered is offline   Reply With Quote
Old 02-09-2004, 11:24 AM   #5 (permalink)
Hillbilly Houndsman
 
SilverZuk's Avatar
 
Join Date: Aug 2002
Member # 13420
Location: Kenna, West Virginia
Posts: 7,120
Not how deep, it's slope.

You are recommended to have a minimum of 2% slope throughout a 4-inch line.

If you cannot maintain slope, make sure you have a positive slope throughout the length.

You should have a minimum of 18-inches of cover. I usually specify 24-inches.
__________________
The penalty for punching someone in the mouth is way too high in our society.

www.MountaineerOffroad.com
SilverZuk is offline   Reply With Quote
Old 02-09-2004, 11:27 AM   #6 (permalink)
Hillbilly Houndsman
 
SilverZuk's Avatar
 
Join Date: Aug 2002
Member # 13420
Location: Kenna, West Virginia
Posts: 7,120
Most sewer laterals are hand dug, or done with a small trencher. They are seldom over 30-inches deep.

I require a minimum of 42-inches of cover over municipal sewer lines. This is mostly to protect it from freezing. Frost depth in our state is either 36 or 42-inches depending upon location. Sewers seldom freeze (Iíve never heard of one around here) because the waste going into them is usually around 60-degrees, and moving/mixing constantly.
__________________
The penalty for punching someone in the mouth is way too high in our society.

www.MountaineerOffroad.com
SilverZuk is offline   Reply With Quote
Old 02-09-2004, 11:36 AM   #7 (permalink)
Registered User
 
Join Date: May 2000
Member # 943
Location: Slightly North of Crazy
Posts: 1,820
Depending on where you intercept it at the depth could really vary. I use to do underground concrete work (dont ask) and they can tie into the main line at any where from 4' to 15' in depth. I helped my Father dig down to put a tie in for his motor home and at the edge of the road he was about 6' to 7' deep.

Closer to the house you dig the shallower it will be so you exploration ditches dont have to be so deep.
The Joker is offline   Reply With Quote
Old 02-09-2004, 11:42 AM   #8 (permalink)
Registered User
 
Moby's Avatar
 
Join Date: May 2003
Member # 19981
Location: Orangeless County, California
Posts: 63
Thanks guys. We took the man hole cover off, I say it was 10-12í deep, my pal says 8-10í.
I guess Iíll see if they have a crawl space or some kind of access under the house. That and just keep digging by the street.

for all.
__________________
JAFN
Moby is offline   Reply With Quote
Old 02-09-2004, 11:48 AM   #9 (permalink)
Registered User
 
Join Date: May 2000
Member # 943
Location: Slightly North of Crazy
Posts: 1,820
Find the main outlet under the house and the direction it goes. Quite often they dont end up where the plans say. Dont dig by the street that will be the deepest part, dig by the house until you find it.
The Joker is offline   Reply With Quote
Reply

Thread Tools
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 On
Pingbacks are On
Refbacks are On



All times are GMT -7. The time now is 03:02 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 ©2011, Crawlability, Inc.