AMV A
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* how due 7% 273 +
PR HAMI #0
محمد
PHILE Lunt to
A L
JAMIES BEd Aved
KOWLOON
WATERWORKS
GRAVITATION SCHEME.
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Present.
Messrs. 0. Chadwick, C.M.G.
W. Chatham, and
L. Gibbs.
24. 4. 2.
Decided.
1. The stepping of foundations on the longitudinal
section of aam 1s to be avoided.
98
2.
Waste weir to be so arranged that it shall act as
a measuring weir both with "boards in and out, the question
of providing a Stoney's sluice to take the place of boards
to be considered, at any rate "boards" to be of iron.
A V notch, or if necessary V notch and rectangular weir to
be provided below overflow to measure small quantities, all
to be provided with self-registering water level measuring
gear.
3.
Catchwater to be of such a gradient as
velocity of 5 or 6 ft. per ascond.
to give
5.
Gauge basin to have V notch and hook gauge.
Safety valves on draw off to be either flap valve
with chain and balance weight or ball resting in vertical
bell mouth. Outlet valves to be reduced to 6" and scour
to 9" with taper pipes.
6.
Sectional area of outlet culvert may remain as
originally designed.
1
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Private notes are available after approval.