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The direct bury portion of the project
ranged from 60cm to 8m in depth and
was installed primarily in sandy material.
The embedment specified and used
was 2.5cm minus stone with filter fabric
to prevent migration of native soil into
the embedment zone.
The design engineer at Bowen, Collins
& Associates received help from the
Hobas engineering staff to specify
the appropriate pipe stiffness rating
based on depth and soil conditions.
Also provided were the appropriate pipe
zone backfill specification requirements
for Hobas pipe.
The Jordan River project required
additional planning because of the
extensive groundwater that was present.
Apart from this, it lies in an area that
experienced some H2S derogation of
the existing concrete pipe. Hobas pipe
was selected for its H2S resistance and
water tightness.
The pipe used in this project had an
SN of 5,000, which is standard for
direct bury and tunnelling applications.
This stiffness allows for routine burying
methods with predictable performance
that can handle deep covers.
Hobas FWC couplings were used for
the Jordan River project installation.
The couplings are factory assembled to
one end of each pipe for ease of use in
the field.
The sealing design includes both lip
and compression elements, so the joint
is suitable for both non-pressure and
pressure service.
Hobas Engineering GmbH – Austria
High stiffness Hobas pipe is easy to S S
install by routine methods
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