The morning news. [volume] (Savannah, Ga.) 1887-1900, 1890-04-26


force main answers for collecting water, and
the collecting system is dispensed with-or. to
state it otherwise, the eoiiecting system takes
the place OF the force main, and il the collect
ing system need, in the near future, 70 be two
miles long then the city location will cost less
than the present location by just the outlay
needed TO make force main-probably $780,
009.
The relative merits Of pump house locations
evidently hinges on the relative merits of force
main and conduit. The new force main can car
tainly be considered TO be e necessity of the
near future, If IL is not now. VIII it cost more
or VIII it cost less than a cOnduitg The smallest
force main that could be considered, if new
one is needed (and it Isl would be a 36-inch cast
iron pipe, which could not cost less
than IS per foot. Having driven over the
ground number of times with a viSw to
preliminary examination for & conduit, it is
judged that six-foot conduit could be con-
structed for about IS per foot, or may be less
Such canduit would have a capacity of not
less than 20,OOo,0OO gallons per day. A cast
iron pipe or th3 same capacity would not be less
than forty-two inches in diameter, and would
cost not less than SIP per foot, and probably
more. A most casual observation of the ground
shows that six-foot conduit having equal ca
pacity would cost much less.
The conduit may, however, be somewhat Ion
ger than force main. because the force main
would probably lead toward the present water
tower, and the conduit to some point noe far
from the Springfield well. A fair comparison
should be based on conduit and force main of
equal capacity. in which event the conduit for
10000, 600 gallons per day might be about 50per
cent. larger than the force main aud still not be
more costly. very casual study of the map
shows that it could not have any such excess Of
length
This would seem to be enough to determine
the city location for a pump house. when it is
considered that the Objectionable loss of press
ure in the force main and its attendant expense
would be done away with. If artesian water is
to be used there is another advantage gained
by the city location, which is SO potent that it
appears to lay all doubts aside. If the present
site Tor pumps is used collecting conduit a
mile or more long will be necessary in
IS already at disadvantage. This
represents an additional outlay over city loca-
ton to the extent OF at least $4,000. The con
QUIT to the city. however. would be at least
two miles long, and rise from supplanting
the force main. it has value as a collector to
the extent or at least $4,000. And as already
stated, considering the probable cheaper cost
Oh conduit, the advantage of city location may
approximate to $i50,000 Still further, a city
location allows the Springfield well to be util-
lied, thus adding 90 per cent. TO the artesian
water now available and saving $500
1t seems, therefore, that a city location Is
about as adapted for river water as is the pres
emit location. and that for artesian water it has
a decided advantage. Ii artesian water is used
the conduit conveying it, lnasmuch as it orig
mates at the river. could be equally as useful
for river water, should the use of it ever be-
come necessary.
Again assuming that all water needed could
be obtained from one deep artesian well, still
the city location and conduit would be on at
least equal terms with present location aud force
main. With the conduit constructed it is highly
probable that few shallow wells along its course,
separated by 1000 feet more or less, would give
ample water for the present, leaving the advan-
tage of the deeper wells to the future. One
answer half of present requirements,
and il they arc placed too close
together they would interfere with one another
just as the shallow wells d. thus necessitating
a .r,r,Ixr ,oF
200O0,0 600 gallons per day 10 to be considered,
that is a supply about double of the present
requirements. All this determines on the city
location as being the more advantageous.
PUMPS AT BOTH LOCATIONS.
This plan involves operating expenses at both
pump stations an increased outlay of at least
5000 per year, or the interest on 300 O00 or
about enough to build the conduit connecting
the two stations. In addition it requires more,
and smaller. and therefore less economical
pumps. Also, IL would necesstate two collect
ing systems il provision is to be made now
much In excess OF present requirements. These
things and many other inconveniences deter
mine such an arrangement 20 be far less desir-
able than the two already discussed.
CONCLUSION.
The desirability and availability of artesian
water being conceded. and the decided advan-
tage which belongs to a city location for q
iStfng water works leads TO the following gen.
eral conclusions
l. plan Tor AMI artesIan supply should be
adopted which contemplateS a conduit from
the present pump-house to some point at or
near the Springfield well. Surveys should be
at once made over the possible routes for such
conduit in order TO determine The best
location land to estimate definitely its cost
and make plans and write specifications for its
construction if it should be adopted This sur
vey should also show the routes possible for a
force main in order that its cost may be def
nitely figured and compared with the cost of a
conduit
Q. Whether river water or artesian water be
used, or whether pumps be located at present
site or at city site, the pumps required for qty
service will be one and the same thing, though
of course, some slight differences would exist in
shape and arrangement of pump house and de-
livery pipe. It takes a year to build large
pump and a year and a half to get it in good
running order. Specifications should at once
be written for pumps, both vertical and hori-
zontal, which will conform to the requirements.
Bids should be asked and contracts let, for it is
quite certain that, whatever is done to improve
the water supply, il can easily be accomplished
before pumps can be ready to realize it.
g. The matter of stand pipe location and
modification of distribution pipe should be con-
sidered
These general conclusions are all that can be
reached until surveys are made and considered
and it is only the large margin that appears to
be to the advantage of the scheme suggested
that enables these conclusions now.
desire again to acknowledge the kind and
courteous assistance of Supt. James Manning
and City Engineer Col. w. j. Winn, both OF
whom have greatly facilitated my work.