FIG 7.
EDGE DETAILS TO PREVENT EROSION BY WILD FOWL
то
Concrete edging
таший
*
1-6"
minimum
3=0" to 4-0'
*
6" to 8" concrete
*
water level!
1~6" to 2′-0′′
with a rough surface which appears 'natural'
to 1:8′′
223
"1
2" to 23/4
gravel
water level
$2"+03"
timber piling
Bank retained by timber piling below water level. This will take less heavy wear than the concrete edging above.
After Beazley 1969
D.S.M.74