P.W.E. Hongkong,
Q 66
involved an additional expenditure of $45,000. Authority for this additional expenditure was duly obtained from the Secretary of State, after reference to the Public Works Committee.
By the end of the year, the containing walls of the reservoir were nearly completed and a considerable area of the concrete invert had been laid.
The excavation for the filter beds was continued and the concrete side-walling and inverting of one of them was proceeded with. Certain 14" and 12" pipes, which were available, were laid from near the service reservoir along Pokfulam Road to the junction of High Street and Western Street, a distance of about 755 yards, as part of the rearrangement of mains in connection with the new works. The laying of these mains entailed considerable alterations to the sewers and storm-water drains met with en route. A number of 6" cast-iron pipes, which were superseded by the new mains, were recovered.
In addition to the above, a length of 242 yards of 12″ cast-iron pipe was laid from near the reservoir to the junction of Bonham and Pokfulam Roads. This will form a portion of the pipe-line for conveying unfiltered water from Tytam to the new filter beds.
1916 Estimates, $200,000.00 | Total Estimates, $310,000.00
Expenditure to 1916 Expenditure, 75,835.05 31/12/16, 119,521.86
113. Tytam Tuk Scheme, Second Section.-Good progress with the construction of the dam was maintained throughout the year. The total length over which excavation had been completed by the end of the year was 1,218 feet, as compared with 630 feet at the end of 1915, whilst the height to which the concrete and masonry had been carried, except in the case of a short length which was purposely kept low to provide a temporary overflow, varied from 102 to 118 feet above Ordnance Datum. For the temporary overflow already referred to, a length of 75 feet was kept down to 86 feet above Ordnance Datum.
In all, 9,533 cubic yards of soft material and 2,994 cubic yards of rock were excavated during the year. The quantities of cement concrete deposited and of granite ashlar and rubble set were as follows:-
Fine cement concrete, 14,546 cub. yds.
Hearting concrete, containing granite displacers, 50,493 "
Granite ashlar, 114,603 >> feet
Rubble, 43,983
As already mentioned in paragraph 64 of this Report, the incidence of the rainfall during the year was very unfavourable for the storage of water in the low-level reservoir. Considerably more than half the total rainfall of the year fell in May and June, when, for constructional reasons, the water in the reservoir could not be maintained at a higher level than 40 feet above Ordnance Datum. A great quantity of water consequently flowed to waste over the temporary
P.W.E. Hongkong,
Q 66
involved an additional expenditure of $45,000. Authority for this additional expenditure was duly obtained from the Secretary of State, after reference to the Public Works Committee.
By the end of the year, the containing walls of the reservoir were nearly completed and a considerable area of the concrete invert had been laid.
The excavation for the filter beds was continued and the concrete side-walling and inverting of one of them was proceeded with. Certain 14" and 12" pipes, which were available, were laid from near the service reservoir along Pokfulam Road to the junction of High Street and Western Street, a distance of about 755 yards, as part of the rearrangement of mains in connection with the new works. The laying of these mains entailed considerable alterations to the sewers and storm-water drains met with en route. A number of 6" cast-iron pipes, which were superseded by the new mains, were recovered.
In addition to the above, a length of 242 yards of 12′′ cast-iron pipe was laid from near the reservoir to the junction of Bonham and Pokfulam Roads. This will form a portion of the pipe-line for con- veying unfiltered water from Tytam to the new filter beds.
1916 Estimates,...$200,000.00 | Total Estimates, $ 310,000.00
Expenditure to 1916 Expenditure, 75,835.05 31/12/16,...
119,521.86
113. Tytam Tuk Scheme, Second Section.-Good progress with the construction of the damn was maintained throughout the year. The total length over which excavation had been completed by the end of the year was 1,218 feet, as compared with 630 feet at the end of 1915, whilst the height to which the concrete and masonry had been carried, except in the case of a short length which was purposely kept low to provide a temporary overflow, varied from 102 to 118 feet above Ordnance Datum. For the temporary overflow already referred to, a length of 75 feet was kept down to 86 feet above Ordnance Datum.
In all, 9,533 cubic yards of soft material and 2,994 cubic yards. of rock were excavated during the year. The quantities of cement concrete deposited and of granite ashlar and rubble set were as follows:-
Fine cement concrete,... Hearting concrete, containing granite
displacers,
Granite ashlar,
rubble,
14,546 cub. yds.
50,493
"
114,603
>>
feet
43,983
As already mentioned in paragraph 64 of this Report, the in- cidence of the rainfall during the year was very unfavourable for the storage of water in the low-level reservoir. Considerably more than half the total rainfall of the year fell in May and June, when, for constructional reasons, the water in the reservoir could not be main- tained at a higher level than 40 feet above Ordnance Datum. A great quantity of water consequently flowed to waste over the temporary
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