Washington standard. [volume] (Olympia, Wash. Territory) 1860-1921, 1878-04-27

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aE0ssa fset long and Eve scet in d.
noeex, was placed in position. and
z - of three-ineh wrought iron
- Nas laid 3 feet under ground foI
- distance of half a mile. This
- sas purposely laid in the sparse
Titled portion of the city, Cor the
Pons Of testing the power of steam
Ih00t interruption. Junction SER
Z Vi pipes were placed in the main
- sat intervals Of from 100 to 200
=, and at these points and at the
eminus Of the line tests were made
Odetermine the amount of conden-
tion, tho power of the steam, and
3 requisite sizes of pipe.
Hhe results from the half mile of
u were 80 satisfactory that ad-
onal piping was laid, making a
4 distance of a mile and a third,
We size Of the pipe being modified
a. follows:s Four-inch pipe was used
4nr the ifst 400 feet, three-inch pipe
cE the next 1,600 feet, two and one
AH inch for the next 600 feet, and
SMo-inch for the rest of the line. In
Ais distance were eight right angles,
toorners OF streets, and ten valves
the main pipe. For the first mile
/ " grade descended twenty feet; for
/ be pext quarter of mile it ascended
venty-two feet, and for the rest of
| NJ distance it descended forty feet.
4sNaa fQng6ls That I Of = pressure Of
'f0rty pounds Of steam delivered to
the service pipe at the boiler house, q
pressure of thirty-two pounds of steam
was perceptible at the emo of the line,
showing a loss from friction and con-
densation OF but eight pounds. In all
this line there were NO traps, thus
obviating one objection which had
been strongly urged. Twenty dwell
ings scattered on tho line were con-
nected with the junction service
pipes, and the tests proved the en-
tire feasibility of the system for
district two and one-half miles
square, the extent of territory to be
heated depending upon the size OF
pipe used. 1t was found that pipe
could be economically laid as follows:
One and one-half inch pipe for l 900
feet, three-inch for 5000 feet, six
inch for 5000 feet, and twe]ve-inch
for 18, 900 feet.
One boiler with a blower is suffi-
cient for the work required, but two
additional boilers have been placed
in the boiler-house, for alternate use
and to guard against accidents. To
attend the furnace and boiler, one
man for the day another for the
night are sufficient. During the
months of October and November,
1877, two miles of additional mains
were laid.
The narrow trenches to receive the
pipe are dug about three feet deep,
SO as to be above all gas and water
pipes. In the bottom of the trench
Q drain of two-inch tile is placed, to
receive moisture. The tiles are sur
rounded with broken stone, over
which the steam pipes are laid upon .
strip Of board. The mains are made
OF wrought iron simil ar to gas pipes,
covered with asbestos and hair felt
ins. and placed inside Of wooden
pipes bored oat lengthwise. the
wooden tubes besng from two inches
10 four inches thick Osssade of the
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