The republic. [volume] (Washington [D.C.]) 1849-1853, 1852-12-31
PROPOSALS For DnEDGE-noArs.
Wan DEPARTMENT.,
BUREAU CoRPs TYPOGRAPHICAL ENeIN EERs,

| WAR DEPARTMENT.,
| BUREAU CoRPs ToPoG RAPHICAL ENGINEBRs,
| December 3, 1852.
DROPOsALs will be received until and includ-
| Il ing the 10th day of next February, for tho
construction Of four steam dred ge- boats, to be
oas 10 5.
| spected, and received NJ White Hall Hartor, on
Lake Champlain.
One for Lake Ontario. to be delivered. inspect
ed, and received at Oswego, on Lake Ontario.
One fur Lake Erie, to be delivered, inspected,
and received at Erie, on Lake Erie 5gt. 10
One for Lake Michigan. to be delivered, in
spected, and received at Chicago, Illinois.
The hull of each boat to be I'D feet long 80 feet
beam, with guards feet wide. sufficient for buck
et-ladder and paddle wheels, 10 draw when
equipped not exceeding feet Of water.
To have two cylindrical boilers, made Of the best
boiler iron, ono quarter of an inch in thickness,
twcnty-two feet long, and forty inches in diameter
EACH Izts pa M
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 half strok eout.of.
ton, with suitable accommodation for the oficers
and hands required to man9uvre and work the
boat. say captain, mate, pilot, engineer, and
twelve hands; also suitably constructed coal
bunkers for about fifty tons of coal. so =
No advance will be made on contract. nor will
boat be received paid for until after it has
been inspected and tried, and found to meet the
Each boat will be supplied with good four
cared yawl- boat, % feet long, and with four good
oars, and also a suitable yawiboat and oars for
assisting in weighing anchor. ~
The boat will be inspected in reference to ar
engagements, materials, and equipment, and will
be subject to the following trial ,ssa s5%a
LIST. As to locomotive power. 1t will have to
move not less than 100 mles in calm weather, on
the waters of each lake respectively, in consecu-
tive hours, at rate of not less than six miies
the hour. 'sas11
I'd. As to dredging power. 1t will have to raise
nd rre inf Of Iona nd n
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, 50 cubic
gravel, 60 cubic yards the hour, from depth OF
not less than 10 nor exceeding - feet.
This must be the continued work If the boat
shorter time of work.
Each boat will have to be supplied with an a.
Choir of not less than 800 lbs, and too kedge an-
chors of 200 lbs each; and with an adcqua TO chain
cable of not less than 10 fathoms long. of iron.
Also 4I-inch hemp cable 100 fathcms long.
The trials will DO under pressure of steam for
dredging not exceeding 60 pounds the square ?
inch for locomoton not exceeding $50 pounds the
The trials and inspection to be made by a Uni
ted States agent. -. ~ ~ $500
The boats 10 be ready at the places stated BY the
last day of May next. 81.
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 arranged az TO discharge the whole
load at once. Each Boat capable of holding not
less than 40 tons of excavated soil.
Proposals to be addressed TO the undersigned,
and marked on the envelope "Proposals for
Drcdge- boat"
TO s. ,at n J. j. ALERT,
Col. Corps Top. engineers.
. tn. Republic, Intclligencer, and Union. Wash
ington; Courier and Enquirer, and Express, New
York; Commercial Advertiser, Buffalo, N. ";
Advertiser, Detroit, Mich; Commercial Adver-
tiser. Chicago, ILL.,; Commercial Times, Oswego,
N. T.; Pittsburgh Gazette, Pittsburgh, Pa; Al
bany Register, Albany, N. r., will give the above
twenty daily insertions, then twice week until
February 10. tt'3'5
Dec 9-d2Ot&2awt ebl0 lt @.