May_1970 — Page 34

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