CO129-302 - Public Offices - 1900 — Page 230

1

بریم

1.

good building stone.

sources Nos.

1 and 2, on account of apparent scarcity of

I must however record my opinion

1

223 that a masonry or concrete dam, like that at Tytan, will be far preferable, even if it cost somewhat more.

ile trench

With

a masonry dam, a leakage merely amounts to a loss of

water.

With an earthen dam, it may result in destrug- tion. I therefore recommend that careful examination be made for building stone, before earth is decided upon as I have never visited the mainland, beyond a material. the former frontier; but I presume that the geological formation is similar to that of Hong Kong, where solid masses of granite are found imbedded in decomposed gran-

If I remember its; but not visible at the surface. rightly, in the Tytan Valley, in its original condition, very little rook appeared at the surface; yet plenty of

It must be clearly understood that, stone was obtained. with care, a thoroughly efficient and safe reservoir can be construeted. I merely assert that, if stone can be obtained, masonry or concrete is a preferable material.

(6) I am of opinion that, unless the most excellent puddle clay is readily obtainable, a concrete stop wall

At any rate it is good is preferable to a puddle wall. practice to fill in the puddle trench below ground wita concrete, using puddle only in the bank, thus

Clay Puddle

tura

Concrete