Ayres Knowledge Center HD Scanning for Infrastructure | Page 6

PROJECT: BYLLESBY DAM UPGRADES
PROJECT: WEST 6TH STREET BRIDGE
The City of Racine, Wisconsin, hired Ayres Associates to design the replacement of the historic West 6th Street bridge
over the Root River and Horlick Drive. The 1929 bridge is a 161-foot-long combination open spandrel concrete arch
structure.
Ayres used HD scanning
to capture the unique
features of the existing
bridge in measurable
digital detail to aid in
emulating those features
in the new structure’s
design. The scan also
included relevant details
from the surrounding
street and community,
including a building
directly next to the
channel wall of the river.
HD scanning gathered
detailed measurements
while minimizing site visit
costs, exposure to heavy
traffic, and the need to
access private property.
6 | SCANNING FOR INFRASTRUCTURE
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Dakota County, Minnesota, hired a team led by
Ayres Associates to evaluate turbine operations
at Byllesby Dam, including turbine management,
historical river flow rates, historical power production
data, and current turbine information. The County
subsequently contracted with our team to design
major turbine and powerhouse upgrades.
Under the turbine and powerhouse upgrade design
contract, the team designed improvements to
accommodate two SAXO turbines within the
century-old
powerhouse
The client can see pits in
building shell.
the concrete – that’s how
Services included
dense and accurate the
collecting an
data set is.
HD laser scan
of the existing
powerhouse
interior. Our team provided 3-D Revit models for up
to three alternatives, using LumenRT for realistic
lighting concepts. The architectural renderings
showed windows, lighting, concrete staining, and
details consistent with early 1900s architecture
and provided interior dimensions of turbine
and generator equipment, access and clearance
requirements, and options for the arrangement of
various control equipment.
This scanning process is more cost-effective and much
more precise than physically inspecting all parts of
the site and making architectural drawings by hand,
and the level of detail gathered is much higher.
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