which to commence an
carduit
aqueduct and this contour the hills (as shown on the plan ) to Victoria. Parts of the conduit being
may
excavated on the hill sides with a covered
" heading" or tunnels. At the Tztam Stream on the live of contour adopted by the Colonial Engineer, the foundation of an embankment
channel and parts heading
may
be laid
outlet
as will
to damn the water of the stream to a deptle of 15 or 2.0 feet vertical of water and an culvert or tunnel may be formed (such be useful for a completed reservoir of full dimensions) to connect the water of the stream with the Aqueduct . 13 Diagrams
they
are
are herearth furnished, - Plano, Cross-sections and Details of the proposed Aqueduel. The tunnel headings are similar to those drawn by the Colonial Surveyor.
The proposed Aqueduct ( in its water channel) is to be on cross-section le feet unde by 3ft lome deep when flowing full of water.
• The water in the hunnel headings to be
5 feet in depth..
The Aqueduct to contour the sides of the mountains and where in rock or material which will stand in the forms as indicated the channel, if not watertight, to be lived with hydraulic mortar or cement equivalent quality to mortar made from Portland or Lias limes
615
Where the Engineer considers it necessary the Aqueduct must be covered as shewn, or in some equally efficient manner. There must be
for ventilation on each 100 yards in length, and washout-pipes at each mile of lough there also
means
may
be
rreano
for entrance to the Aqueduct Channel at each mile.
It is proposed to arrange the conduit in -lengths of 1/4 of a mile, with level bottern
und vertical falls of 12. miches at each step, with a stop gate above each step - This arrangement will form the conduct into a series of elongated tanks, which
may to retain water to the depth of 3ft leis the flow being over the stop gates;
a
sypho
or
be made
a noted in the top of the stop gate or through a circular pipe or througly gates; or through fisced over the top of the gate. I is intended that the conduit shall act as a service- tank when more water is flowing in than is being consumed - In extreme dry
weather, and when the entire volume of water is being used, the stop-gates nearest Iztam be opened to allow the water to be delivered freely-
Some
of the stop gates at the town and being shut through the night or tuvies of least use of water, to accumulate water for periods of the day when it is most in demand. The intention is so to utilize I m
and use the Conduit as to make it act as
Service Reservoir.
may
а
On the line of Carduit means must be