Thursday, April 19, 2007

Sewer connection, day 1

We're running a whole new sewer pipe from the house to the street. The City of Newton usually requires this if you renovate more than 50% of a residence. Frankly, though, we really needed a new line - the 60 year old ceramic pipe had been compromised by roots, and couldn't run straight to the house since we moved 6 feet south.


Michael Shea and Company is doing the excavation, and will also do the water line on Saturday, and landscaping later on. Here's the crew after they'd opened the street and located the sewer main near the old connection.



The surprise was that the sewer main was 11 feet down, although in the "upstream" manhole it was only 5 feet. The main drops low under the aqueduct near us, but we thought the drop was downstream.

You can see our old sewer line running to that brick "chimney", then down to the deep main. The big shallow pipes are storm drains.


The plan was to replicate exactly that structure, but with PVC pipe embedded in concrete instead of ceramic and brick.


The result: the old connection has been capped, and the new one is complete and tied in a few feet downstream.


Then the whole street opening is filled with weak concrete, and plated over for the night while it sets. Newton Engineering insists they are going to require this of everybody this year, even though it adds 50% to the cost of any utility improvements. We kept about half of the perfectly good sand/gravel mix, to replace subsoil on our lot.