Underground Construction - June 2022 - 17

LEFT: Large-diameter AGS couplings were used in the project's buried applications.
ABOVE: Victaulic Series W719 Butterfly Valve and AGS couplings were installed in tight spaces
within the valve vault to allow thermal contraction and expansion, reducing footprint.
Manager Kyle Hucul, to provide a variety
of grooved solutions that enabled efficient
installation of the piping systems
throughout the project. The project
scope included replacing the traditional
M11 harness system with Advanced
Groove System (AGS) couplings on
42-inch to 48-inch pipes.
This eliminated flanging of up to 100
bolts throughout a single system and
allowed simpler connections. The joint
only requires four nuts and bolts on either
side to install.
in 2016. Contractor Graham General
and mechanical subcontractor Balzer's
Canada Inc. were tasked with upgrading
existing solids-handling digesters,
as well as installing new primary clarifiers,
secondary clarifiers, and secondary
treatment bioreactors, and new thermal
hydrolysis,
effluent
filtration,
biogas
handling and storage facilities.
As a large wastewater treatment plant,
Bonnybrook's specifications demanded
the use of large-diameter valves, up to
48 inches. Additional piping solutions
were also prefabricated for ease of installation
on systems, including mixed liquids
suspended in solid lines and buried lines
going to the clarifier ponds.
Alternative pipe-joining solutions
Victaulic was engaged by Balzer's Project
" I typically like to avoid bolting up
because you often encounter time-consuming
issues, like misplacement of a few
studs or nuts from the thousands of bolts
we order. With Victaulic, we were able to
eliminate the need to flange. All our team
had to do was cut, groove and join. It
saved a lot of time, " Hucul said.
Finding an abundance of skilled labor
able to weld or appropriately bolt up
flanges is a pressing challenge, as every
sector of the construction industry grapples
with worker shortages.
Due to the combination of the easy-toinstall
grooved designs and prefabrication
solutions, Balzer's Canada Inc. was able
to reduce the number of skilled laborers
needed for the job, while completing
Plant D's piping installations on a reduced
schedule.
" We simply dropped in the spool
pieces and connected them, " Hucul explained.
" The ease of installation also
allowed my crews to accommodate misalignments
because they did not need to
rework and reweld any parts to do so.
" We were able to install hundreds
of feet of large-diameter pipes underground
in a couple of weeks. The client
was very happy. "
The project also employed Victaulic
pipe joining solutions and valves, including
vertically installed Series W719
Butterfly Valves on large-diameter pipes,
14-inch Series 365 Plug Valves installed
by rings, Victaulic Style 31 AWWA couplings
for the sludge lines, and Bermad
Series 972 Pressure Reducing Valves, expediting
installation and improving safety.
Dynamic movement
A detailed stress analysis calculates the
expected rate of differential settlement
and identifies where settlement will occur
when applying traditional buried
services solutions, like an M11 harness.
However, since Victaulic's AGS coupling
is designed for dynamic movement
and accommodates both settlement
and thermal contraction and expansion,
contractors working on the Bonnybrook
Expansion Program didn't have to worry
about calculating settlement risk or
needing to re-excavate and backfill due
to relaxed bolts.
This solution allows more couplings
to be placed close together as part of its
dynamic design, requiring less space for
trenching and, therefore, accelerating
UCONonline.com | JUNE 2022 17
http://www.UCONonline.com

Underground Construction - June 2022

Table of Contents for the Digital Edition of Underground Construction - June 2022

Contents
Underground Construction - June 2022 - Cover1
Underground Construction - June 2022 - Cover2
Underground Construction - June 2022 - Contents
Underground Construction - June 2022 - 4
Underground Construction - June 2022 - 5
Underground Construction - June 2022 - 6
Underground Construction - June 2022 - 7
Underground Construction - June 2022 - 8
Underground Construction - June 2022 - 9
Underground Construction - June 2022 - 10
Underground Construction - June 2022 - 11
Underground Construction - June 2022 - 12
Underground Construction - June 2022 - 13
Underground Construction - June 2022 - 14
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Underground Construction - June 2022 - 17
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Underground Construction - June 2022 - Cover3
Underground Construction - June 2022 - Cover4
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