TNAG-0532-FCO40-627-Conservation-of-wildlife-in-Hong-Kong-1976 — Page 89

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