CO129-204 - Acting Governor Marsh - 1882 [11-12] — Page 380

30

375

to

may be built.

up and the waters of the stream passed off through the Culvert until the final -completion of the Works. Storm overflows may be left to escape over the top of the dam. They will not do more harm than the washing away of the mortar from between the stones. After the escape of every severe preshet over? the top of the dam it will be necessary remove and relay the top course of M.

of Musenry in fresh mortari The Engineer in charge will find it conducive to the better progress of the Works in the end to turn his whole attention to the preparation and accumulation of materials during the rainy season and to devote the dry season entirely to the, operation of building, for during this period of the year he will experience no trouble from storm

waters.

Quantities and Estimates.

Mr Price informs

me that he has already submitted an approximate estimate of the cost. of the dam and outlet works which he calculates at £55,000, but as this estimate is based

on the assumption that the rubble me

masonry dam will be laid in Chinese Lime mortar, except for the ten feet nearest the reservoir- face where he contemplated using Cement, I am of opinion for the reason given in paragraph 19 that it should be supplemented by another £8500 with a view to encebling Portland Cement to be substituted for Chinese Lime mortar throughout.

14.