concrete cloth
TRANSCRIPT
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Slope Armoring for Pond(Jan. 17, 2017
By Kurt S Chirbas, PE CPESC
Milliken Infrastructure
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Pond slope failing
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Detail Designs
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Detail Designs
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Detail Designs
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The general pullout strength of percussion anchors in the fields:
A) TLA -2 ( 400 lbs peak) and average around 250-300 lbs
B) TLA-3 ( 600 lbs peak) and average around 300 -400 lbs
*however we notice that the anchors still had a slight movement
during the load measurements which means over time the loads could
potentially decrease
Determining anchor pullout in field
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Percussion anchor spacing
Given the field pullout information, we recommendedusing the TLA-3
anchors and not the previous suggested TLA -2 and changing the
anchor spacing from 6 foot intervals to 5 foot intervals on all overlaps
and offset center panel anchors from 3 ft. to 2.5 ft. That equates to 2
anchor for every 17.5 sq.ft. (or 1 anchor for every 8.75 sq.ft.) of
surface area plus additional anchors in the anchor trench (top and
bottom at every overlap). The original spacing equated to 2 anchor
for every 21 sq.ft. of surface area (or 1 anchor for every 10.5 sq.ft.).
The recommend minimum anchor depth completely installed after
loading is 5 ft. depth to ensure long term load capacity.
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Reconstructing Slope and installing anchor trench before deploying Concrete
Cloth)
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Deploying Concrete Cloth
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Deployment of Concrete Cloth
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Installing Percussion Anchors
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Installation in Progress
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Installation Completed