20' x 55' Bypass Chamber - Upper Braes

Project Location
Houston, TX
Construction cost
Construction Start/End
10/2013 - 05/2014



Cast-in-place 20’ diameter x 55’ deep by-pass chamber was constructed to give a lift station means of bypassing during plant inspection and repairs. This structure can serve as addition storage in wet weather and high water events.  Danby PVC Lining was installed to provide a corrosion resistance to the by-pass chamber.

Depth of structure:
Health and safety:
Standard confined space safety protocol and forced air was used during construction.
Has any re-inspection been performed? What was the condition of the structure?
Yes, in 2016, the chamber was 3 Years old. Chamber was found to be in great shape and is being used for other projects that require the lift station to be by-passed.


Danby Panel Lok III-E Flat Panels were installed in 10’ sections for the cast-in-place round structure.

Method of flow bypass or diversion, if used:
Well points were installed as necessary during excavation and construction of the chamber. The main trunk line to the WWTP was kept intact until construction allowed to saw cut the main trunk line, the flow was bypassed as needed to complete.


Problems encountered during construction:
Problems encountered after construction: