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Keywords

cap
concrete cap
R. South Tyne
aav
rock armour
gabions
2025
low flow
Alston Arches
scour
piles
concrete slab
erosion
viaduct
drought
holes
slab
11thApril2025


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aav - erosion II {14 of 18}

aav - erosion II {14 of 18}
Taken to show the width of the concrete surface - and the relative position of the holes & the viaduct piers.
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A series of 18 images showing erosion and penetrations of the concrete cap, which has allowed scouring of the underlying fill leading to some significant voids and un-supported areas.

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