The Portland daily press., 1870-08-19
Rnca kwaier at Block Island. fs. I.
ENGINEER OFFICE, U. s. ARMY.
NEWPORT II. L. Aupust 11th I210-

CE, U, ..
NEWPORT, X. l., August 18th, 1870.
CEALED PROPOSALS will be received at this
- office. until Saturday, the 18th day OF September
1872 at Y o'clock NJ, for tie construction Of the
Sa6structure of Brelks ater at Block Island, Il.
for local purposes.
1t will begin at point On shore near "Sand's
Landing" on the southeast part OF the Islaud, and
te built out TO- and along line Joining sCla Head
and "Fve Foot Rock" Its total length will be
about three hundred (300) feet beyond the low wa
ter line. The greatest depth OF water the line ct
the Breakwater is at its extremity, where there
is sixteen 16) eet at mean low water. From thence
shoreward, the bottom slopes up gradually to high
water mark, the bottom being smooth sand untier-
laid with clay. The mean rise and tall OF the tide is
three and one quarter 8 l ~ teet
The substructure OF the breakwaer will he stone
simply dropped into the water SO as to orm a slope
OF three ~ base to one I'll perpendicular the side
toward the sea, and m base one ~ be Tpenoc-
uiar OH the side toward Ibe lind, and to be thirty
t3O) feet wide at mean low water level. The work
must he begun at the shore end, and be finished up
to mean low water level as it progresses from the
shore.
The stone must be granite, of the best ouality. so
far durability is concerned and in p ces weigh
ing not less than one and quar- er Il 1-4) tons
without regard to shape, exec. that there must be
no slabs or thin pieces.
1t is believed that this work can be done by vess,
unloading their cargees on the spot. In ordinary
vessels lie in the rOastead with per tect
safty though there will he times in the earlier p
less of the work at least, when much time must be
lost The worst storms are from the southeast, and
during storms from that quarter, the roadstead is
untenable for vessels of any class.
To complete the whole SuJshuciure about fl ftv
thousand tons OF stone will be required, hut at pres
ent the funds appropriated will, it is estimated, pay
far not more than ten thousand TONS PROPOSALS
will be received only for the smaller amount and no
contract will be entered into work to lie rform-
ed after the S0th day OF June, 1871.
Payments will be made monthly res serynp fen ny
per centum Till the contract is fulfilled.
Proposals must state the price per ton at which
the stone will be furnished and ut in the breakwa.
ter, which price must include all charges whatsoever
against the United States.
The stone must be deposited by the contractor nm
der the supervision OF an Eugnt designated by the
urdersigDe Tor that duty.
Proposals must state the earliest time at which
work will be begun after acceptance OF proposal
Work begun must be prose cuted with all prac-
:icable diligence.
Each proposal must be in duplicate, accompanied
by a Guaranty in duplicate, with a prInle1 copy of
this advertisement attached TO each proposal Bank
forms tor proposals and guarantees will be furnished
by this Office on application. and any other nolm ma
ton practicable TO give.
The Object OF this advertisement being to give
every responsible and capable purity an opportunity
to bid for the work, and to to the public The
greatest amount Of work with the tunds appropriate
cd the right is reserved to reject any and all bids
II these objects ave Lot thereby obtained.
Proposals must be addressed to the undersigned
anu endorsed on the envelope, proposals Tor build
ing breakwater at Block Island. r. L."
u. X. WARREN,
Major OF Engineers;
au 15d6t. o.