CO129-447 - Governor Sir May - 1918 [1-3] — Page 496

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raising three million gallons of water daily a height of 400

fest, the taking up and relaying of 13 miles of 18" main,

and the laying of 32/3 miles of new 18" mains, besides other

minor works. The extreme length of the dam is 1,255 feet or

nearly mile, its extreme height from the deepest part of

the foundations to the roadway where we stand is 171 feet and

its greatest thickness at the base is 115 feet. The maximum

depth of water impounded by it is 117 feet. The quantity of

concrete roquired in its construction amounted to 128,117

cubic yards and of stone facing to 223,260 cubic feet, Nearly

200,000 bags of cement wore used in the work.

The total cost of the works has amounted to nearly

$2,500,000. The works were designed and supervised from start

to finish by lir. Jaffé and I am sure you will agree with me

that they reflect the highest credit on his engineering skill.

He was ably assisted by Kesars. Henderson and Newhouse.

When

it is remembered that the foundations extend to a depth of

49 feet below sea level and that provision had to be made not

only for dealing with flood-water from the Tytan Valley on the

one side, but also for the exclusion of the waters of the Bay'

on the other, the difficulties of the work may be realized.

In this respect, the dam is probably unique among works of its

class for the impounding of fresh water.

I must not omit to beatow a word of praise on the contrad-

tors, Hessrs. Sang Lee and Co., who have executed the work in '

such a manner that it will bear comparison with works of a

similar nature anywhere in the wide world. Not only so, but

they have completed it within the contract time, namely, five

years. So far as I am aware, only two deaths from accidents i

have occurred during the execution of the works. The construction

of an extensive system of catchwatora still remains to be carried

out and this should be proceeded with at an early date.

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