The republic. [volume] (Washington [D.C.]) 1849-1853, 1853-02-24

kNafNtER DEPARTMENT.. iab
WAsHINaroH, February 49,, 1853.
TT is proposed to construct lat presently 1000
i linear feet of the open pile breakwater in Lake
Pontchartrain, opposite to the terminus OF the
Pontchartrain Railroad, and at the distance there
from of 3,760 feet, and in Is feet water Said
brea kwater, TO be constructed according to the
plans and drawingsin the hands of Major G.. T.
Beauregard, Corps of Engineers, New Orleans /;
Major William H.. Chase, Corpsof Engineers, Mo-
bile; and Mr.. H. F. Ingraham, Pensacola at each
OF which places they can be seen and examined. i
M II ia to consist of four rows of cypress or pine
piles IL in square, driven from 10 to Is feet into
the bottom of the lake, which is composed of mud
and sand; the piles in each row being feet from
centre to centre; and the distance between the
three outer rows (that is crosswisc being 10 feet
from centre to ccntre the inner row beinginclined
80 as to act like braceJor buttress to the others,
by abutting against the top of the next to it,
where they are to be haved into each other and
firmly boited together. The three outer piles in
cross section are to be connected together by an
inclined cross piece, - in 10 in strongly bottled
on to their heads, and intended also to receive
4 inch pianking. which will be securely fastened
on by heavy spikes and trenais of locust; this
planking is to- be open; the planls being about
foot apart and let into mortices about 2 inches
Deep. sslg aelsf
This plan king or platform rises on the inside Of
the breakwater to about feet above the low water
level the lake, and descends towards the utside
to about feet below the came level, thus present
| ing an inclined surface which the wave will
break. g5,si, sl3 I'd 1sf ~ stioefs4sfi
| The two middle rooms will be connected together
longitudinally by string pieces, IL in. X II in,
I securely bolted to them. and supporting the in
clined cross piece just spoken of, which will itself
be braced to the two inner rows Sd and 4th) by
/ horizontal cross piece IL in x 10 in. boted on to
| them Immediately below the low water level. The
construction under water will be executed as fol-
lowss After driving down the outside pile certain
distance, the inclined cross piece is attached TO it
by screw bolt, and it is then driven down to is
proper depth, its head being cut off level with the
cross piece; the other piles are then driven down
and the cross and longitudinal pieces boted on to
them also The fastenings to the middle pile can
be easily effected, as their depth, below the low
water level will only be from Is to "a inches. The
TOUR inch planks under water will be spiked and
trenalled to the inclined cross piece by means of
tube and follower, the holes and lnortices being
\ prepared before placing them in position. II s
Quantity of materials for the construction ofthe
4 breakwater: - 81 .,f r,fyz tels1q5f ads f,s<
500 cypress or pine piles, 70 in. x - in, from
1000 running feet of croas and longitondinal
! "a = ~ pieces, 10 in. 10 in 3Gs vaa "a sgaas
% 600 running feet of plankings 4 in x IL in.
l,I25 screw bolts, {galvanzed iron,) from in.
| TO ] in. diameter, and about Is in. long
I $500 spikes.
| $500 trenails of iocuat
It'll supposed that the work can be carried on at
the rate Of 200 days in the year without interrup
4 ton from the weather, after making fair allow
ance for other casualties and Sundays 1t will be
/ required TO- be completed in six months from the
/ date ofth contract.
i Proposals will be received at the Engineer De.
/ partment Washington, until the Both day oil
March, 1858, for the execution of this work, under
one or the other Of the. following propositions:
/ 1st To furnish and deliver at the site of ihs
I breakwater, or about the Pontchartrain Railroad
/ Depot, Gas the experimenting engineer shall di
rect,) all the pes the cross and ongtudinaI pieces
and the planking needed for its construction. ~
i I'd. TO construct said reakwater at 80 much pei
running foot of ts length, the contrac tors furnish
l n Pls ne nile he n
/ longitudinal pieces, and the planking
i Sd. To furnish al the materials, &C., required
and to construct the whole breakwater at 30 much
| per running foot of its length; in other words to
/ embrace the other two propositions in one.9
| The right of rejecting all the offers which M ay
| be made is. reserved.
The Engineer Department is to exercise the ne
cessary supervision, through its agents to secure
the due progress of the work and its faithful Der.
formance; and to reserve to itself the right of an
nuillng the contract at any time, should the hold
| ers lit fail to fulfil its conditions.
! No advances OF money will be made by the En
/ gineer's Department under any circumstance
/ whatever.
Payments proportionate to the amount of work
| done will be made monthly on the certificate oil
the local agent that due diligence has been used
in prosecuting the work; that no interruption 10
its caiy progress has occurred save that incident
to Sundays, bad weather, epidemical diseases, or
/ unavoidable arrangement of machinery. not due
to radical defects in construction quality of ma
! teral The quantity paid for must have been taken
| from section completely finished as required.
| Twenty per cent. will be reserved from all pay.
ments due. The accruing sums to be finally paid
TO the contractors the completion of the work
or to be forfeited to the United States in case OF
| failure of the same. s9ii4t{
4 ALI proposals. must be accom- pa MED by testimo-
mails OF high character to the competency of the
propeser TO execute the work offered for the reli
ability of the sureties must also be manifested
The envelopes should b. endorsed proposals for
/ the construction of Breakwater in Lake Pont-
chartrain'' s5 > sac ifsii04
For further particulars address Mnjor G. t
Beauregard, Corps of Engineers, New Orleans.
/ ? .54i@ ~ ~ JOS G. TOTTEN,
BIT. Brig. Gen. and Col. Engineers
! To be inserted in the Republic, Inteligencer
| and Union, Washington; Louisiana State RepubIi
| can, New Orleans Bulletin, and New Orleans Bee
/ New Orleans, Louisiana; Mobile Advertiser, Mo-
| bile, Alabama; Pensacola Gazette, Pensacola
| daily for two weeks; copy of each paper con
tanning the advertisement to be sent to the Engi
| neer Department. 81 i Feb 23-dzw
/ UNITED STATES MAILS.