The weekly Floridian. [volume] (Tallahassee, Fla.) 1867-19??, 1888-08-21

ing of the terms iosscf Aead aud e6ecfice Ae.ri e
| will next show how they ARE applied By the
| last example The effective pressure lefi on the
| hyirsut nc ,ied 3 0J0 iect from the tank after
taking III The l,ss Z" head. SO 81 pplnls il oaly
| 10 10 pounds effective pressure "r heal Nov
by referring Ia the hydraulic tabi.s al ITS Ten
pounds will j-i so gsllons per minute 40 hori-
rntalv and 23 les vertically. But ~ half 1900
feet w'ull reach $40 feet. over three qu lriers Of
mile from The centre of The town. We fad what
pnwer j. let. in had nf 100 feet its eq iva
lent 43 4 pnIn,ls after ,Ieiuc,ns the tracir,naI
loss oi head ir 500 fee just halt nf 1000 fret
This halt dsta"c 4 500 feet. cms i,>> II
16 go pounds %! pressure which, su'strlct,-I from
43 p,un Is, leave efe,fivc pres .ur. of 2S 80
pounds per square inch. which by tables al Jets
is iorce 'ugh To- ici SO gall ms per minuie. ~
FEET high, with 200 ie+:i Ot hosc attached This
will Il, very well. rs We csui N; 20 5000 feei
from the SUBMITS at the hill IN Tallahassee.
(wlerc the tank wouli he loctird 100 f..,.t yhl
with"u Discerning. thus adding Io the h Al and
It's pressure. Pray do no, get wr''ng d lnSophi-
cal ea impose nn Your mind l. must h. under
si'r'! thai ,hr full inrce oi the hundred teet
head, m 43 'unis. is salways bearing however
long the pipe or distance The hvlranI AMI M
portion l. lt'st or ann,hil ,ic !, ,ny 4, plrt is
cunvrrtei into v'lOciiy. winch i thr part we
call lusi and The reIntn Ter goes To efec, Jet
which Is the only part that ctn ne utilized 50
before the water is given motion. by drawing
ire plug the full irrce nf The head or pre- sure of
43 pounds per square inch l. betring Impair
TALLY on every plug in town, r-yrrlless ot its
Distance from the reservoir This can easily
be proven, thus: Tne water hen. sill or mo-
tioness in The pipes velocity is generated hence
no frctOnal resistance is aroused tn Oppose it.
and no force of heal called on and los, IN over
coming the friction.
Having completed the subirc, OF :ric ion in
pipes and seen It's rettrding effects, per lengths
oi 900 feel we will be surprised 10 see bv glanc-
At tHh a i.sfS h,yu II
rated per hundred ieet OF hose
Ninety-two iect head, or its equivalent sorty
pounds pressure per square inch, 1T a hydr tnF
sends lo3 z gtilons per minute. through Il inch
nozzle, lOo feet horizontally and 80 feet ver-
tlcally, but attach thUus and feet OF hose anil 10
msintain the same effect wou rrq1ire 122
pounds pressure or an addition II the head of
W feet ot lS9 feet, making hea of PSI feet in
all, rather to- high to be propng up water
tanks. But with 800 iect OF hose W. can let
los gallons per minute 20 feet horizontally ar
43 teet vertically, anl with 100 feet nt hose and
one inch nozzle we could JET So gall,ns pr
minute SO feet horizontally and II teet verii-
cally. This viii answer our pur, ,,J>es in III ab-
sence Of force pump f'r the inlln win. re ,spns:
Although friction is The same in pip..s hose
whether lying up or doxn hill on level
nevertheless when inclining own hill there IS
a constant increase ot head gtnei by descend
i'm that will add To the heal of % feet or pres
sure Of 40 pounds.
Ii then the pipes or hose ncllnes more rapidly
than the necessary slant to overcome friction so
much over is added as effect to The head. The
degree of slant NAV just cancel the friction
partially do so showing that in all cases il is
well To secure il.
Fortunately the site OF Tallahassee is verv un-
dnlling the hills rising about hundred feet
abDvc the valleys, ard although l have been
familiar with lis typography from childhood,
nevertheless, have been studying il airesh of
late for the important purpose of locating linn
tied supply OF pipes on such streets, from whence
could be utilized the steepest descenis under the
necessity OF reaching out with the longest pos
sib.e hose, thereby gaining head to protect
houses afar off on thos- reels not la be imme-
di 'tely laid with pipe, from others that are,
thereby giving iair protection To all from the
ravases of fire, until the force pump is in daily
operation and the whole water works system
perfected.
On The accompanying plan a large inch main
crowns the summit of the ridges aud is capped
with three reservoirs between which it sways
thereby overcoming what little friction large
u pipe occ tsions with the amount OF wa'er IL is
required To furnish, excepI where II extends on =
level from McCariy street X : .rvnir t. Monroe
ST. less than 1000 feet which will occasion inra
flow of 600 gallons per minnie through this man.
a loss of 8 03 tect head ar 3 4S pound pressure.
To get this loss hack will add il To our a,lrp-
ted pressure of 40 poun l., making pressure oi
43 43 pounds or IL tank ON a tower 100 ttrt high.
high service, in The places Lcted on the city
map IS eei in diameter by l8 feet elevation.
II may be observed that the incI pip
calculated to discharge 300 GALLONS per minute FIR
fire service BIT # The water comes fr'm two
different directions il will furnish 600 gallons per
minute without any increase cf friction and
thus furnish two hydrants throwing four streams.
With tanks holding 10000 gallons piece
there will be plenty ot wafer on hand tor expen-
diture during the interval OF getting up steam,
tor al the rate of discharging 900 gallons per
minute through the hose, il would take one
hour TO jet away SO 900 iIlnns which would ex-
hau>t not third OF the high service supply.
The force ot the pump coming mo service
with its supply of 800 gallons per minute would
close with the tremendous pressure If the
cending column the autnm uic check valves al
the reservoirs, thus keeping the water from vast
ing by overrunning the tanks. aIl with the
tanks thus shut off the pressure could be in
creased Ia 80 pounds per square inch II the n.y.
drants, which Tanning says is worth more than
a brigade of fire engines in commission.
| will now give few notes on the effects of
the hose ON streets not To be Immediately laid
with pipe, unless there prove 10 be funds enough
to do 50, using an effective pressure o. 40
pounds which is obtained from our high service
tanks alone.
Take the south half of C,lhoun street and al
tach 800 feet of hose Ia a hydrant on Monroe
street Now If Calhoun street level
with Monroe street, which fortunately in this
case it is not, but considerably below IT, you
can jet. (see table ofjets) with Il inch nozzle,
134 gallons per minute 43 feet high. ar with a
inch nozzle, SO gallons pr minate 30 feet high
Again, ih' north half of Gadsden street wDull
draw supply from the main laid in The nrrth
halt of Calhoun street, and require probably 400
feet of hose, and us before taking the most
favorable conditions that the two streets
a level, II inch nozzle would Jet 10S gallons
per minute 43 feet high. under a pressure of
only 81 pounds, whereas we have 40 pounds
pressure and the hose reaching down hill which
would materially increase the jeting. Adams
Street is likewise protected and the streets be-
yond Duval street with an increased head Occa-
stoned by the descent of the grourd In fac the
whole town comes under the protection of the
skeleton plan OF mains and submaias, which |
present you, and which you can lopk over and
add more pipe it you like, but certainly no less.
Accnmpiny this report will I've lou nj an eS-
innate Of the cost Of materials Freight and Ia
Dor can better be ascertaine 10y some ofthe busi-
ness men Of Tallahassee.