30
12
-
3 **
10
+
-12-
65.83
2 fall.
Road
12
Approx top line of gravel fill 53.00 O.D.
3 oversite
concrete
1
39.00
3
64.77
T.W.L.65.0 O.D.
-
Water stop
Reservoir lining membrane
0.06 thick butyl sheet
lining protection
24
12
-12
*** 3 ***
10
110.D.
41
18
·2·
30
4 thick rolled sand membrane base
Figure 1. Section through buttress wall
6 open drain 3 oversite concrete
Aerial view of the reservoir under construc-
tion showing how the buttress wall follows the site boundary
Far East BUILDER, May 1970