The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-01-27

PROPOSALS. ron ,p1.zoDe 3. 81, IS


WAR DEPXRINu tFf, 81 .S&t -
BUREAU CoRPs ToPoaRAPHIcAL ENeINEsRs,
! 80 81 as1ss&is December 8, 1859.
PROPOSALS will be received until and includ-
ing the 10th day of next February, for the
construction of four steam dredg e-boats, to be
oas a y e 8 y dsv.r,a
specsed: and received at White Han Hafbor, on
Lake Champlain. ssszesse s,ssss ieiisssa az
One for Lake Ontario, to be delivered, inspect
One for Lake Ere, l. Sc ds,sfsd inspected
and received at Erie on Lake Erie. sssis sees 81
One for Lake Michigan. TO be delivered, in.
spected. and received at Chicago, Illinois.
The hull Of each boat to be ll0 feet long, 80 feet
et-ladder and paddle. wheels, to draw when
equipped not exceeding 5 feet st water
TO have two cylindrical boilers, made Of the best
boiler iron, one quarter of an inch in thickness,
twenty-five feet long, and forty inches in diameter
each. .esasDcfas stsaSe aa3
The working cylinders of the engine to be
twelve inches diameter inside, not less than half
an inch thickness Of metal, and to have a length
OF stroke of four feet, with q half,stroke cut off,
Each boat to have paddle wheels for locomo-
ton, with suitable accommodation for the officers
and hands required to manauvre and work the
boat, say captain, mate, pilot, engineer, and
twelve bands; also suitably constructed coal
bunkers for about fifty tons of coal.
No advance will be made on contract, nor will
boat be received or paid for until after it has
been inspected and tried, and found to meet the
terms of contract. ss..s 49, ~ Il {.
Each boat will be supplied with good four
cared yawl-boat, 20 feet long, and with four good
oars, and also suitable yawl. boat and oars for
assisting in Weighing anchor. ssis, ~ -
The boat will be inspected in reference to ar.
engagements, materials, and Equipment, and will
be subject to the following trial: = H., 80 e +
lst. AS to locomotive power. 1t will have to
move not less than 100 miles in calm. weather, on
tive hours, at rate Of not less than six mile
the hour. 70 Il =. S. s. - 'st
I'd. As to dredging power 1t will have 10 raise
and discharge into scows, of loose sand, 100 cubic
yards the hour; OF loose mixture Of clay and
sand, part sand and parts clay, not less than
100 cubic yards the hour; of pure clay, 80 cubic
yards the hour; of tenacious clay, and Of sand and
gravel, 60 cubic yards the hour, from q depth OF
not less than 10 nor exceeding 10 feet. -
This must be the continued work of the boat
during 10 hours, and not an average during any
shorter time of work. =,
Each boat will have to be supplied with al =
Choir of not less than 800 lbs, and too Hedge am
chors Of 200 lbs. each; and with an adequate chain
cable Of not less than 10 fathoms long, Of iron
Also A inch hemp cable 100 fathoms long.
The trials will be under pressure Of steam for
inch; for iocomotion not exceeding $50 pounds the
square inch.
The trials and inspection to be made by Uni
ted States agent
The boats to be ready at the places stated by the
last day Of May next. sf
Proposals will at the same time be received for
four discharging scows for each dredge boat, each
scow to be provided with two good sweeps, and
with bottoms SO arranged az to discharge the whole
load at once. Each boat capable Of holding not
less than 40 tons of excavated soil. g'9 =
Proposals to be addressed to the undersigned,
and marked on the envelope Proposals for
Dredge boat. ''ftet 4 IHa9 eos s 58e4
aAs j. J. ALERT, psiai
Col. Corps Top. Engineers.
The Republic, Intelgencer, and Union, Wash
ington; Courier and Enquirer, and Express, New
H. 81
Advertiser, Detroit, Mich; Commercial Adver-
tiser. Chicago, Ill; Commercial Times, Oswego,
N. Y; Pittsburgh Gazette, Pittsburgh, Pa; Al
bany Register, Albany, N. r, will give the above
twenty daily Insertions, then twice week until
February 10. eit%gi M
Dec 9-d20t &2awtF eb1O ssa -}ts