Page 34 - McWane Poles Sales Manual 2024

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McWane Poles, A Division of McWane Inc.
Ductile Iron Alley Arm structure assembled on
the ground.
Ductile Iron Alley Arm structure being set in
pole hole.
PUBLICATIONS
Innovation at Avista or
Thinking Outside of the Box
By Jeff Budke, PE
Sometimes unique design constraints are the
impetus for unique engineering solutions. Recently
a simple road move project in the City of Spokane
Valley turned into a design challenge. The City
of Spokane Valley initiated a road improvement
project on Mission Avenue, west of Barker Road.
The engineering constraints city engineers left
Avista with, was our utility poles could only be
located within a 24” wide strip on the edge of
the right-of-way. Normally this would not be a
horrific issue. Obtaining overhang and or down
guy easements for the occasional road crossing
is a fairly straight forward venture. However, not
in this case. This stretch of customers do not see
Avista in a favorable light and many refused to sign
any easement, no matter what the payment. Thus
the engineering challenge. Which construction
standards and materials would allow for zero
overhang of the property line and withstand a
non-symmetrical loading without any side guys for
structural integrity?
Alley Arm construction satisfies the zero overhang
requirement, but Alley Arm construction requires
a side guy to prevent the pole from bending and
deforming over time. Engineering analysis showed
a 55 foot class H1 wood pole, buried extra deep
would handle a non-symmetrical framing of our
largest distribution conductor (556 AAC), Joint