Sewer Pipes Abandonment
Sewer Pipes Abandonment
(OP)
Toronto and other old cities in Canada are starting to feel the need of standardizing the way sanitary and storm sewers are abandonded. So far there has not been a standard requirement nor have the specs on a particular project been enforced and complied with. With redevelopment and recent brownfield legislation the sloppy abandonment that has taken place in the past has surfaced and has become an issue.
I wondered if you have standard specification or practices in your municipality that addresses this issue.
I would appreciate any feedback.
I wondered if you have standard specification or practices in your municipality that addresses this issue.
I would appreciate any feedback.





RE: Sewer Pipes Abandonment
Good luck
RE: Sewer Pipes Abandonment
Please see FAQ731-376 for great suggestions on how to make the best use of Eng-Tips Fora. See FAQ158-922 for recommendations regarding the question, "How Do You Evaluate Fill Settlement Beneath Structures?"
RE: Sewer Pipes Abandonment
It used to be flushed only and then stoppers are used. but causes other problems such as collapse
RE: Sewer Pipes Abandonment
It seems to me you (or your jurisdiction) have had dealt with the issue extensively. I would be interested to read a standard spec or a contract document excerpt pertained to this practice. Particularly, if there is some QC stipulation. The problem in Southern Ontario seems to be that the Contractors are not doing diligent job.
Thanks.
RE: Sewer Pipes Abandonment
Filling with flowable fill is a great idea, but costly as well. Plugging with concrete in the manholes and removal of the frames and covers are cheaper but come with issues as well. Since the municipalities I managed did not have abundant capital funding, in most instances, efforts were made to update the record drawings and cadastral plans showing abandonment of the utility. In many cases, these pipes were too small for any use or too fragile but were of sufficiant depth that collapse realy did not impact or disturb the exisiting road surface.
Cost was always an important consideration, and in many cases was the deciding factor as to the methodology of abandonment. In some cases, some pit run or soil, a half yard of concrete and a pavement patch was the extent of the physical abandonment, and the records/cadastral/GIS were updated.
KRS Services
www.krs-services.com
RE: Sewer Pipes Abandonment
Please see FAQ731-376 for great suggestions on how to make the best use of Eng-Tips Fora. See FAQ158-922 for recommendations regarding the question, "How Do You Evaluate Fill Settlement Beneath Structures?"
RE: Sewer Pipes Abandonment