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 undersized
pipe.
