The Delta independent., 1921-10-28

They provide the system a means O.
rendering uniformity of service
which is very desirable, II not essen
tial
Line From junction Box to Pressure
Tank
From the junction box to the Dough
Spoon and Dirty George pipe lines te
the pressure tank on Orchard Mesa
the distance is 5000 feet, and the fall
200 feet The conduit is an S-inch
vitrified clay pipe similar to that in
the Dough Spoon line. If the pipe
was laid on a uniform grade through
out. if that were possible without un
due detour, it would have discharg
ing capacity of not less than 2.25
C. F. 8.
The profile shows grades as low as
so per cent, which would produce a
discharge of about .35 c. F. S. The
capacity of the pipe. however, is re-
duced more or less by leakage in a
section which is under pressure and
operating as an inverted siphon.
1t is quite evident that the profile
does not represent the line as actual
ly built on, and accordingly the above
figures are subject to modification
Apart from exact data, however, it is
apparent that the capacity of the sys-
tenn is throttled in this section of pipe
line. If the line had been laid out on
uniform, or nearly uniform, grade.
or if it be accepted as pressure pipe.
the fall between the terminni is suf-
ficient to produce a greater discharge
than the minimum given above for a
gravity flow line. There is dis
crepancy, and conditions suggest
closer investigation by instrumental
survey. There may be an obstruction
in the pipe.
In the absence of definite knowl-
edge and detailed Topographic data of
this important link in the supply sys-
TEN l recommend that survey OF it
be made SO that the controlling grades
and conditions may be ascertained
In this way it can be determined
where the contracted section exists.
if such a section does exist, and the
extent of work necessary to put the
line in good running order.
The proper size of pipe can only
is made. This does not imply the
abandonment. of the present pipe. 1t
is likely the greater portion of it will
fit into the present capacity needs.
The stand pipes are in need of
substantial repairs. They should be
provided with strong locked covers
Like those on the Dough Spoon line,
they are too accessible. They are
unsanitary and open to contamina-
ton.
Line From Pressure Tank to the City
and Garnet Reservoirs
The distances between the pressure
tank, and First street and Meeker
avenue, and Garnet reservoirs. are
3.6 miles, and So miles, respectively
Similarity the differences in elevation
are 290 feet, and 81 feet, respectively
From the pressure tank the line con-
sists of a 10-inch steel pipe for n
distance of 500 feet; thence two g.
inch pipes to the rim of Orchard
Mesa, distance of about 1.3O miles:
and thence. for 220 miles. 1O-inch
pipe to connection with the distribu-
tion system at First street and
Meeker avenue.
From the last mentioned point to
the reservoirs the principle routes are
via a 12-inch main on Main street,
and an S-inch main on Meeker to
Third, thence on Third to Leon, and
thence on Leon to Fifth, where juno
tion is made with a 12-inch main from
Main street. From here the S-inch
main continues to the reservoirs. the
last circulating connection being with
6-inch main at Leon and Seventh.
The capacity OF the 8.inch line to
The required capacity Is 2 C. F. s.
Under the proposed plans the ca
pacity OF the distribution system is.
for the present. sufficient. A new g.
inch main Will be required from First
and Meeker to the zone boundary, to
take care OF the services at present
supplied by the S-inch main which
becomes the higher zone main ex-
clusively.
Garnet Reservoirs
The combined capacity OF these
reservoirs is 100000 gallons. that of
the larger being 100000 gallons
They have commanding location.
and in them the system has po-
tential storage capacity whose value
would appeal strongly to the water
consumers were It available. At pres
ent as a part Of the system, they ap-
pear to have little real value. In
other words the capital investment is
practically idle. Only one Of them.
the smaller. is functioning, to rela-
lively small portion OF it's capacity.
as an equalizer or regulator.
AS part Of a plan to put the water
system on satisfactory operating