Week 21

Week 21 Update:

Lots of progress this week to report.  8-inch sanitary sewer was constructed between Clay and Webster Avenue and storm sewer was installed in the Clay Avenue intersection.  Domestic and fire suppression water services were installed to the proposed Samaritas development project located west of Spring Street.  The water main between Clay and Webster is being installed using nitrile gaskets and polywrap.  The nitrile gaskets are high performance gaskets that are resistant to petroleum contaminants and other contaminated chemistries. The gaskets and polywrap were specified in this area due to the underlying poor soils and groundwater chemistry. JMC also began utility investigations in the Webster Avenue intersection and started removal of the concrete box sewer and concrete box storm sewer between Clay and Webster to make accommodations for the new utility placement and construction of the roadway.  Helical pier installation continued in the Webster Avenue intersection.

           

Above:  Storm sewer installation in the Clay Avenue intersection

           

Above:  Helical pier installation

           

Above:  Poured concrete pier cap and reinforcement

           

Above:  Storm sewer construction in the Clay Avenue intersection

           

Above:  Removal of the existing concrete box sewer that was protruding up through the roadway of Spring Street.  The box sewer was constructed on timber piles (due to the poor soils) so as the roadway settled the sewer stayed put and ultimately came up to the surface of the roadway.  Most drivers likely thought it was just a section of concrete roadway.

           

Above:  Placement of water valve and sanitary manhole

Above:  The existing old brick box storm sewer that was removed.

Upcoming the Week of May 3:

Sanitary sewer, water main, and storm sewer construction will continue on Spring Street between Clay and Webster.  The work in this location was always anticipated to be the most time consuming given the conditions: poor underlying soils, high groundwater, required groundwater treatment, helical pier work, and the abundance of existing utilities to work around.  We anticipate 1.5 to 2 weeks more of utility work in this corridor before we are clear of those conditions and move up the hill on Spring Street towards Muskegon Avenue.