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Started By
Message
Cast Iron Sewer Lines. When did they stop using them?
Posted on 11/10/24 at 4:06 pm
Posted on 11/10/24 at 4:06 pm
We've looked at homes and the one I have now has them and I've made repairs already to half of them.
When did they move away from these pipes in SWLA? I've read mid 70s in a lot of areas. Would they ha e continued into the 80s?
I'd like to not do this again. Remodeling above ground isn't an issue as I can do much of the work.
We are in an area where the larger older homes are more in a price range as well as trying to avoid particle board homes. We're looking in areas that either have homes in mid 80s to early 90s or brand new DR Horton specs (I'm not interested in).
When did they move away from these pipes in SWLA? I've read mid 70s in a lot of areas. Would they ha e continued into the 80s?
I'd like to not do this again. Remodeling above ground isn't an issue as I can do much of the work.
We are in an area where the larger older homes are more in a price range as well as trying to avoid particle board homes. We're looking in areas that either have homes in mid 80s to early 90s or brand new DR Horton specs (I'm not interested in).
8
Posted on 11/10/24 at 4:11 pm to thejudge
cast iron is still used every day in the year of our lord 2024. We put some down last week
Posted on 11/10/24 at 4:17 pm to thejudge
Technical term is ductile iron, and they are in every sewer spec book in every city in the country. Most of the time the contractor has the option of using pipe materials that range from iron to plastic.
Posted on 11/10/24 at 4:24 pm to cgrand
quote:
We put some down last week
Ok. Good to know.
I had assumed everything went to PVC. Dad used to build homes and all I've every seen when laying pipe before concrete was PVC.
Posted on 11/10/24 at 4:24 pm to thejudge
Started being PVC in the 80s. 70s and prior was cast iron with clay in the yard
Posted on 11/10/24 at 4:37 pm to thejudge
When Pvc/ abs became popular
Posted on 11/10/24 at 4:45 pm to thejudge
They still use them. Charlotte pipe and Tyler pipe are both the US manufacturers. They are also some Chinese makers that are crap.
They are still used commercially, mostly above ground, but some locations underground. Biggest reason for above ground commercially is they can pe placed in a plenum ceiling space where PVC cannot because of fire spread. (NFPA code).
Cast iron is more expensive material cost as well as labor cost. That is why the switch to PVC.
Also PVC cannot be placed in direct UV exposure as it will break it down.
EDIT:
Personally I prefer cast to PVC above ground but it is cost prohibitive for residential. Cast is quieter and you can’t accede to put a crew in it hanging a picture and cause sewer gas smell to leak out.
They are still used commercially, mostly above ground, but some locations underground. Biggest reason for above ground commercially is they can pe placed in a plenum ceiling space where PVC cannot because of fire spread. (NFPA code).
Cast iron is more expensive material cost as well as labor cost. That is why the switch to PVC.
Also PVC cannot be placed in direct UV exposure as it will break it down.
EDIT:
Personally I prefer cast to PVC above ground but it is cost prohibitive for residential. Cast is quieter and you can’t accede to put a crew in it hanging a picture and cause sewer gas smell to leak out.
This post was edited on 11/10/24 at 4:55 pm
Posted on 11/10/24 at 5:15 pm to thejudge
I spent $20k replacing mine
Posted on 11/10/24 at 5:19 pm to jmarto1
Replaced all my sewar lines myself to save money. My back hurt like hell for 2 weeks afterwards - should have spent the money.
Posted on 11/10/24 at 5:47 pm to Logician
Not at all correct homie.
Posted on 11/10/24 at 5:57 pm to Logician
Ductile iron is for water main piping and is different to cast iron piping.
Cast iron piping is hard but brittle. It can be cut using a snap cutter. A chain.
It is painted with a special tar type paint both inside and out that prevent a dusting. However it has a life span and will wear out and start rusting. Also acid will eat out cast iron piping.
Cast iron piping is hard but brittle. It can be cut using a snap cutter. A chain.
It is painted with a special tar type paint both inside and out that prevent a dusting. However it has a life span and will wear out and start rusting. Also acid will eat out cast iron piping.
Posted on 11/10/24 at 5:58 pm to cgrand
quote:
cast iron is still used every day in the year of our lord 2024. We put some down last week
Yep. An old head plumber told me it was their job security.
Posted on 11/10/24 at 6:18 pm to thejudge
PVC toilet flanges are garbage, that’s all I got.
Posted on 11/10/24 at 6:21 pm to LSUtoBOOT
engineers spec cast iron above ground 90% of the time. If the budget allows it we always recommend that the owner use it.
underground can be a budget buster but I find that in at least half the cases failure there is due to breakage by force which is the downside of PVC
underground can be a budget buster but I find that in at least half the cases failure there is due to breakage by force which is the downside of PVC
Posted on 11/10/24 at 6:27 pm to cgrand
problem with bell and spigot cast iron is the soil settles uneven and separates. Polyethylene works in pressure applications with pvc used for non pressure
Posted on 11/10/24 at 7:47 pm to gsharky
It’s all correct…when it comes to heavy construction for municipal sewer lines. Didn’t realize he was talking residential. Strike my comments from the record.
Posted on 11/10/24 at 8:50 pm to tigeraddict
quote:
lso acid will eat out cast iron piping.
Cast iron is used for sulfuric acid
Posted on 11/10/24 at 8:56 pm to cgrand
I gotta assume cast iron has to be only in certain areas? I’m not in construction but I haven’t seen cast iron in years in Florida? Is there a reason it maybe used in Louisiana?
Plumbing is relatively simple when it’s exposed. The hardest part is usually exposing it.
Plumbing is relatively simple when it’s exposed. The hardest part is usually exposing it.
Posted on 11/10/24 at 9:05 pm to cgrand
Smaller diameter tends to be non metallic due to costs.
Posted on 11/10/24 at 9:40 pm to Logician
I have never seen ductile used for gravity sewer main, except in special spots for a very specific reason.
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