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The solid concrete dam
at Wyre Wynd Hydro (built
in the 1920's) was showing some uniform erosion of the downstream surface.
Consequently, during 2009 the dam was resurfaced employing a 3-step process:
1) pressure wash old concrete surface, 2) lay reinforcing steel, and 3)
shoot approx. 6" thick concrete utilizing Gunite placement process. |
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The resurfacing project
involved 7 men working 7 weeks, 450 man hours of pressure washing, 242 yards
(35 truck loads) of concrete, 2 tons of epoxy coated rebar. Job completed
11/2/09. |
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A-1 Gunite Construction, Inc.
employee Kevin shoots a section.
The Gunite process eliminates
the cost of form work that would be necessary with poured concrete. |
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SHI employees, Rick (left) and
Bob are identical twins who keep things running smoothly at the hydros. Who
do you think is the harder worker on this day? |
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Newly resurfaced dam and two
new eel net ladders, 11/3/09. |
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Woodstock, CT High School
student Riley S. did a class project on hydropower. In order to understand
some of the tasks involved we had her help rake the trash racks! |
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Glen Falls hydro project planned for redevelopment by SHI. |
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Beginning of blade seal
replacement job at blade trunion, September 2009. |
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September 2009 forebay was
drained and stone walls were Gunite finished to eliminate leakage and strengthen
walls. |
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The Gunite process consists of
dry concrete mix blown through a hose with water introduced at the nozzle.
Adding minimal water at the last moment results in zero slump and a very
strong finished product. |
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Duncan smoothes and levels the
concrete to minimize erosion from flowing water. |
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Photo shows newly resurfaced
dam and new eel ladder voluntarily installed October 2009 in conjunction
with DEP. Eels climb the netting and swim into the impoundment through the
white pipe. |
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New timber intake gates and trash rack structure built by SHI for Glen Falls project.
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Surplus turbines, generators, hydraulic controls and switchgear purchased by Summit Hydropower for a hydroelectric project in Connecticut.
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View of propeller looking
upstream, approx. 10' diameter, 4 blades. |
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Installation of new blade seal
with brass crescent section removed. |
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