The Pacific commercial advertiser. [volume] (Honolulu, Hawaiian Islands) 1885-1921, 1907-06-24

! ton and the length of the tunnel
Eighteen months were required in cut
1 ting tunnel No. 2-2446 feet in length
| Very hard rock was found. Com
pressed air and percussion drills were
used in tunnels 1, ,. 3 and to furnish
power and. incidentally. air.
The formation in the long tunnels
was principally Of lava rock Of alter
nate strata Of IA and pahoehoe. with a
slight dip to the sea.
The fumes, 80 in number. vary in
size according to grades and capacity
required-3X4, AKA, 4x6 and 4x7 feet.
The waterways are constructed of red
wood lumber with trestle and floor sys-
tenn of northwest lumber.
The open ditch varies in cross sec
ton and grades to comply with the
conditions of soil and capacity, being
designed to carry the maximum capa-
city without cement lining. Approx
mately 20 per cent of the open ditch
has been cement lined on bottom and
sides
The steel pipeline crossing the IA
nous lao Valley is 1858 feet in length
and three feet inside diameter, convey
ing the water under the bed of the lao
stream and delivering it into a cement
basin thirteen feet in diameter, thence
through tunnel No. 1873 feet in
length-to a permanent weir, where the
total flow of the canal can be accu-
rately measured at all times.
The capacity of the conduit is 4500O.-
900 gallons in "a hours, or 69.S1 cubic
feet per second, after making liberal
allowance for seepage and evaporation.
Construction on the canal was COM
menced in March, 1905, and completed
in June, 1907. The construction of the
canal was the result of an exchange of
land and water rights on the part of
the Wailuku Sugar Co. and the Hawai-
ian Commercial & Sugar Co. in settle
ment of their respective rights to the
waters Of the lao Valley, which had
been in litigation for years past.
The waters of the Waihee stream
(after providing for the Waihee kule-
anas), those developed, and the new
Waihee canal TO where water is de-
livered to the H. c. & S. Co, are owned
by the Waikiki Sugar Co. and the
Hawaiian Commercial & Sugar Co..
TIP and SIP respectively: the cost of
the construction of that portion of the
portion. The Waikiki Sugar Co. ac-
Quired in the exchange a large area of
land of extremely fertile soil. enabling
them to extend their plantation and
double their area of cane land. The
construction of the new canal and ex-
of land and water will enable
both plantations to perfect their sys-
TEN of irrigation adding very materi-
ally to the value of their estates.
The cost of the new Waihee canal
in round numbers is $4,000.
The writer has been chief engineer
of the works from start to finish, To-
eating and designing and constructing
the works for the Wailuku Sugar Co.
of Waikiki, Maui; Brewer & Co. of
Honolulu, agents. The canal is an ex-
ample of high-class irrigation works.
Mr.. George B. Sturgeon, c. E., now To-
Gated in Oakland, California, was as
sstant engineer on the location and the
principal portion of the construction
work.
The water was turned into the new
canal on the fifteenth day of May,
1907, in the presence of the representa-
-ives of the plantations interested and
4 number of the visiting Congressional
party, and gathering of local cfti-
zens.
JAMES r. TAYLOR,
Member American Society c. E., Con-
sulting Hydraulic Engineer