HDPE Vs SDR 35 Piping For Gravity Sewer Line - Excavation & Site Work - Contractor Talk

HDPE Vs SDR 35 Piping For Gravity Sewer Line

 
Thread Tools Search this Thread Display Modes
Old 03-31-2014, 09:24 PM   #1
Registered User
 
chart321's Avatar
 
Trade: CM
Join Date: Mar 2014
Posts: 1
Rewards Points: 10

HDPE Vs SDR 35 Piping For Gravity Sewer Line


Why is SDR 35 the preferred piping for gravity sewer applications? Its life span is less than HDPE piping? http://www.contractortalk.com/images...milies/sad.gif
chart321 is offline  

Warning: The topics covered on this site include activities in which there exists the potential for serious injury or death. ContractorTalk.com DOES NOT guarantee the accuracy or completeness of any information contained on this site. Always use proper safety precaution and reference reliable outside sources before attempting any construction or remodeling task!

   

Advertisement

 

Old 03-31-2014, 09:58 PM   #2
Pro
 
dayexco's Avatar
 
Trade: entrepreneur of excavating expertise
Join Date: Mar 2006
Posts: 6,383
Rewards Points: 220

Re: HDPE Vs SDR 35 Piping For Gravity Sewer Line


what trade is "CM"?

Advertisement

dayexco is offline  
Old 03-31-2014, 10:09 PM   #3
Pro
 
dayexco's Avatar
 
Trade: entrepreneur of excavating expertise
Join Date: Mar 2006
Posts: 6,383
Rewards Points: 220

Re: HDPE Vs SDR 35 Piping For Gravity Sewer Line


heavier, harder to lay, harder to maneuver on job sites, (can't imagine it'd be too easy to throw a 20' stick of 8" HDPE over your shoulder and walk away with it like you can PVC. in open excavations, on gravity sewer, it's not standard to the industry. everybody in the sewer biz has bins full of pvc fittings, i'd have to drive 100 miles to get HDPE fittings.

unless you're running large excavators, 20' lay lengths are a miserable son of a bitch. most 22 ton machines are not comfortable handling/pulling 24' boxes. do you fuse the crap in the ditch or up on top and attempt to get it on alignment, on grade, once shoved in the hole?

i can see where it's a great product in pipe bursting jobs...otherwise, looks like an awful lot of extra work to me.
dayexco is offline  
The Following User Says Thank You to dayexco For This Useful Post:
backhoe1 (04-02-2014)
Sponsored Links
Advertisement
 
Old 03-31-2014, 10:09 PM   #4
Pro
 
jhark123's Avatar
 
Trade: Pro Cat Herder
Join Date: Aug 2008
Location: Enumclaw, WA
Posts: 2,507
Rewards Points: 1,708

Re: HDPE Vs SDR 35 Piping For Gravity Sewer Line


My impression is that, for an equivalent wall thickness, hdpe is more flexible than SDR 35 (I could be wrong). Sewer is laid at a very low slope % and any "dip" caused by a flexible pipe could cause a low spot. That is also why it must be bedded in a substantial amount of pea gravel.

ETA: it also sounds like a lot more work to me.

Last edited by jhark123; 03-31-2014 at 10:14 PM.
jhark123 is offline  
Old 03-31-2014, 10:32 PM   #5
Pro
 
HUI's Avatar
 
Trade: Utility, sitework, and erosion control contractor
Join Date: Jan 2011
Location: Plymouth, IN
Posts: 219
Rewards Points: 178

Re: HDPE Vs SDR 35 Piping For Gravity Sewer Line


I wouldn't use it for gravity sewer unless I installed with HDD. It works great for force main that is installed by HDD. But anything open cut is SDR 35 or sometimes SDR 26 if your deeper or in close proximity to another water line
HUI is offline  
Old 04-04-2014, 05:06 PM   #6
Pro
 
JDavis21835's Avatar
 
Trade: Excavation
Join Date: Feb 2009
Location: Saginaw Michigan
Posts: 408
Rewards Points: 386

Re: HDPE Vs SDR 35 Piping For Gravity Sewer Line


Dont forget, any fused pipe has lips inside the pipe that have to be machined, or they will catch solids.

Advertisement

JDavis21835 is offline  



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
fine line bolt slot suspended ceiling diffuser Rich D. HVAC 4 01-03-2013 01:32 AM
Trenchless water line replacement A-Z Cuda Plumbing 0 10-04-2012 07:50 PM
braided fishing line in the toolbox. Rich D. Tools & Equipment 18 08-07-2012 06:43 AM
Sump Pump - Burying the Line Deeper - How Deep? AboveAndBeyond Remodeling 4 02-11-2009 12:22 PM
What Is The List Of Every Line Item Possible For Siding Jobs From Insurance Cos.? Ed the Roofer Windows, Siding and Doors 0 08-27-2008 07:20 PM

Join Now... It's Fast and FREE!

I am a professional contractor
I am a DIY Homeowner
Drywall Talk is for
PROFESSIONAL CONTRACTORS ONLY!

At DrywallTalk.com we cater exlusivly to professional contractors who make their living as a contractor. Knowing that many homeowners and DIYers are looking for a community to call home, we've created www.DIYChatroom.com DIY Chatroom is full of helpful advices and perfect for DIY homeowners.

Redirecing in 10 seconds
No Thanks
terms of service

Already Have an Account?