The daily dispatch. [volume] (Richmond [Va.]) 1850-1884, 1879-09-05
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S3erat KaSaWha. -. ,... Ia rUtI.
'Tne plan wss prcp sfY 'olons1 VII y
nam Z. saiepsl. TINTED 500 su ,.srnseti
~. z 81 United States oI
, ssss ssnsfsf 10, S. Wright The preseat
1919 .,ssss.ra,,sc,s. was pres ients rs 10 now
s, s saffied out ty Colonel t;Taesii, Lieu
te,,snt a Ths.nas Turtle, corps oi eng
1890 $500. ANN dinte charge Of the svork. az
49, 49,, ~ innnroyenIent from the mouth o.
pssns saeek "a the Ohio is new 10 TINS eoun.
go 4 ssnlfar all at1 infoTssed mas; been
Ia "Mtv IN france and Belgium. o Sofsea
ssss,i rssor, az iss features nay De interest,"
tuf ss,m Ia Falls OF Kanswaa TO the Oaso'
80 Smrles. and the fsll IN. this distance T.
S1ne fect. From the Falls ~ mouth N
FAINT ereek, tie rate Oh fail tsiSa feet 10 the,
,s;ia. thence to Charleston the rate u %
1ssf md thence to the Ohio 0.s feet Res.
nile. AT low water I'm 1876 the cnanoes
saesi,sE Elk sboai, which Is lust 'besoss
Saaf sion. had hut III ieet depth OF watezs
md tbere was no navsgasio above ni9 $3.50
fnwfi about ten miles aboye ms ~ S ~
an us,freQuent occurpeace, 'aithoux sS, ~.
a1,out BAH the year the river " ~. ~
for some distance spqge ssro Iowa : :.
boats or aix-sect dran4nt. :. T. 49,
sTha object OF tie inpro vementis 70 tnaanc-
+sin nsyipatson sos this depth. the year.
.nmn5, from the Falls 10 the Ohio. 'ihss TO
70 no aecompIished hys a system 81 locks ana
1 Ian,s 10 III. Ia In number: The ,htts vary
tom 7 10 ga feet on the lower part OF TIE
river 70 10 feet on the upper part. -,
THE fiat three dams below the fntis WIN
he nermanent, such as have been .Dait
hitherto In this country: the remalnins
ones will be movable, and can De tnL I, =
Soryn and out of the way whenever snere
5sSsnffieient water to maintain the slS,ieet
,,arioasion without them; which, ordlna-
rTiy. ID about one hail the year. -. ais
The locks will be uniform IN size. eA.;
cant M to lift-S00 feet long oy oV icy
vide stn the clear. Sufficient to PASS touI
c6al.barges, or three @coai-DarseSs ahu y"
Steam-tug. IL, =. 49,, :, :. ;,,o.
be mass through them 25e feet no wi I..a
where the dam can be thrown apWu NM msa
1;e below the present bed OF the river Ine
remainder OF the dam, from 210 TO 300 feet,
according to locality. can be thrown down
Tor from s to & feet In ,deptb3 and fhis part
viii he used to give free vent to HOODS, ana
te, regulate,;as desired, the amount OF now
through the navigable pass
The foundation OF the dam at Inc naYiSa"
HE mass is q mass Of stone, timber. and cor.
crete. about fifty feet wide, securely bolted,
down TO the bedrock; its highest point
being at least two feet below extreme low
water. The foundation OF the remainder Is
out stone masonry, carried up to from nve
to eight feet OF the crest, according TO 10.
caIitv. The dam itself Is composed OF
wooden wickets, which in the nayfga6le
pass are three feet eight inches wide by
thirteen feet high, and in the remainder OF
the dam from five to eight feet high, accord
ing 10 location. a.. :,f- s-'.a I
These lwickets are at their centres hinged
to and supported by o wrought-lron morse,
formed OF an UPPER and lower shalt joined
byswo Suprights, which Is about: SIX .teeti
high, and stands nearly vertical on the toun-
dation. 80 = -. = -. - 49,.
This horse can move down stream from
fine vertical by turning on the bottom shaft.
It cannot be moved up stream much, be-
yond the vertical, as it then comes In con-
factwith a mass OF masonry and timber
eighteen inches high and thirty inches
thick. and against the upstream side OIL
this wall the lower end:of the wiOkets rest.
Thus the wickets have q slope forward .of
about five feet in their total height. 10
maintain 10 place the wickets when raised,
with their supporting horses, there are
wrought-iron props from N12t to IA feet
long, which are hinged to the top OF the
horses and abut against iron blocks, which
are bolted to the foundation below These
props when doing duty are at an aagle OF
37o with the horizon - ..e ~ .-1r's ... =
The wickets supported by the iron-work
form the movable DAM. and as each wicket
forms about feet. Of. the length OF the
dam, it requires about sixty-two OF them TO
close the navigable pass. The wiekets in
the remaining portion OF the dam vary In
number with the location, aud their widths
vary with their lengths. There Is space
OF about inches between the Wlckets
left for freedom OF movement, which may
be closed at very low stages Of water by
thick, wooden strips laid on or otherwise,
but ordinarily the water will flow through
these spaces. i.'1 .,-,F .;.ss,,:. 81. !
1:@ = TO REMOVE THE DAM. ..,,.p1 Pa
The blocks which support the feet of the
props are about 8 feet long by IL inches
wide, but only one half the upstream end
is ot'a thickness sufficient to hold the prop.
The other portion Of the, block is a groove
through which the end of the prop may
slip when 1t Is trfpped, or moved horizon
tally; and by. q very simple arrangement,
which is worked from the shore-end OF the
dam, this teamwork can be tripped, and al
low both iron-work and wickets 10 fall
down stream-down to the foundation,
where aiF-will remain secure from damage
until they are wanted 10 restore navigation.
o., ta;2,T TO RAISE THE DAM. a..e
This will be done from movable bridge.
There will be iron frames or trestles about
8 feet apart, and rising n to 24 feet above
the crest Of the dam, 4 feet wide on top and
- feet at bottom, on which will rest moy~
able foot bridge, perhaps 20 feet from the
crest OF the dam up. stream. From the top
of each iron trestIe q stout chain will run
to each of pair of iwickets, and by means
OF winch travelling on the bridge and
these chains, each wicket, with its support
ing iron work attached. can be successfully
drawn up into place. The prop, which was
tripped to let down the dam, on being
raised to place, runs ia q groove parallel to
that before mentioned, which rises gradu-
ally to the top OF the block. and when
the wicket is fully UP the end OF the
prep drops into its place against the
end OF the block and remains there
until it Is again tripped to aet down the dam.
The foot-bridge remains in place while the
dam is up; the trestles supporting it are
hinged to the foundation, permitting them
tn Iatl across the current or In M, IA recfio,y