Sanitary Sewer Replacement
and Relief Program
Phoenix,
Arizona
The City of Phoenix
has initiated a Sanitary Sewer Relief Program
to systematically address sanitary sewer mains
that exceed capacity during peak day weather
flows. Dibble developed basin-wide solutions
that consisted of the design of 8,200 linear
feet of 8-inch through 24-inch relief/replacement
sanitary sewers. Dibble completed nine design
projects utilizing traditional open cut and
trenchless technologies under both construction
manager at risk and job order contract delivery
methods.
Design methodologies
employed for sanitary sewer relief/ replacement
included a combination of design of parallel
relief sewers, redirecting flows to alternate
sewers, upsizing pipeline diameters, and utilizing
traditional excavation replacement techniques
to replace
