The republic. [volume] (Washington [D.C.]) 1849-1853, 1849-07-13
In all, SIG blocks

wide, and "a inches thick
In all, SIG blocks.
The above headers are only to be dressed on the
beds and builds, which dressing is TO extend feet
inches inwards from each end of the stone. There
is no face work, but draft of an inch must be run
round each end of the stone, showing full corners
and square edges, which must continue full to the
gauge within. The ends and middles of the stone
may be left split from the quarry, being full di
mansions, but no allowance will be made for any
excess OF size.
Bill II, No. 2,
Includes all the front and back stretchers, closing
blocks, and counterfort encasement stone, from the
foot course to the surface Of the water.
LIST front. 46S stretchers feet long, 2 feet wide
bed, "a inches high.
I'd front. "a blocks feet long, feet wide bed "a
inches high.
Sd back $50 stretchers feet long, IL inches wide
bed, "a inches high.
4th counterforts. 30S stretchers g. feet long, Is
inches wide bed, "a inches high.
The above stretchers are required to be dressed
only the beds and builds, the face and back being
left split from the quarry. THAT is the top, bot
tom, and the two ends of the stone are alone to be
dressed, with the exception of fair draft of inch
round the face and back Of each stone, so to
show full courses and square edges. 1t will be per-
ceved that the back stretchers and counerort stone
have but lS-inch beds, while the rise of the course
is "a inches. It is the Sinch beds and the builds
OF these stone that are to be dressed.
Bill II, No. 8,
Is the balance of the foot course.
HEADERS.--l34 lineal feet of header blocks, of
feet bed, and from 2 TO feet wide on the face.
This is to be feet thick for feet in from the
face, thence the top bed is sloped nwards, at the
rate of in six for three feet, that the inner
ends of these stone are but lS inches thick. The
beds and builds of these stone be dressed but
not the ends, except the draft before directed.
Bill B, No. 1,
Includes all the Headers of the rustcated rock
work above the water.
18th course. AZ headers feet inches 2 feet wide
the face, Is inches high.
18th and 18th courses 10 headers feetlo long feet
. wide on the face Is inches high.
These headers to be dressed throughout their
whole length, on the top and bottom beds, and for
q feet in from the face of the builds The face is to
be rusticated rock work, hereafter described.
Bill B, No. Q,
Includes all the Stretches of the rusticated rock
work above the water, 18th, l4th, and 18th courses
100 stretchers, feet long, feet bed, Is inches
high.
The beds and builds of these courses are to be
closely dressed; and the face first class, rustcated
rock work.
Bill B, No. 3.-Coping.
434 lineal feet coping feet wide ON the bed, and
from feet 10 feet long, and feet thick.
The coping il to be dressed on the top and face
according the specifications for the first class fine
cut work. The beds and builds are to be dressed
truly, as TO make close joints with sharp arris
edges and full corners. The back line of the top TO
be full and square.
First Class Work.
The face and the top of the coping must be of the
usual description, of fine cut tcork. Smooth and
true draft lines, two inches wide, must be run
round each surface, which must be worked per-
fecty out of ioind within the draft lines the stone
must be dressed TO a true, even surface without
depression of any kind, and finished by tooling at
right angles to the BEDS and the top of the cop
ing at right angles to the front line. The tooling
To be such would be produced by patent ham
mer of six blades TO an inch.
The arris edges of all joints of the work above the
surface Of the water included in Bill B. Nos. l. 2,
and 3, must be sharp, clean, and true, without
break, nick, spalling Of any kind. The front
top line Of the coping is to be rounded the arris
edge, two inches on each face, the quadrant of
circle of two inches radius.
The face of the stone included in Bills Nos / and
is 10 be well executed Rusticated rock work."
formed by fine cut draft lines too inches tcide run
round the surface above specified; said draft
lines 20 be sunk 10 depth Of not less than halt an
inch, than ttco inches below the rough sur
face Of the face of the stone, within said draft lines
The rough surface Of the face To be full and round
ing from the draft lines and in case hollow, or
sunk below the limits.
Second Class Work.
On the Beds and Builds Of the fine fooled ,ouk
ADORE D,e ,catr.-The arris shall be straight and
true, forming close, and clean even joint. True
draft lines inches wide must be run entirely round
each bed, and the surface Of the top and bottom
beds worked perfectly out Of wind and parallel TO
each other. The surface within the draft lines
must be dressed true TO a straight edge, without
following No depression Of any kind will be adj
incl anfi ha ne mr. Kkfth in
the draft lines on the hack and joints; and none
will be admitted on the beds builds exceeding
inches diameter and inch i'm depth, nor closer
together than one foot and in mo case where they
shall together exceed one fourth of the area Of the
surface.
Third Class Work.
Al The stone included IA Bills H. Nos. |, 2, aud 3,
on all that used beop me surface qfbe toate, tciH be
NJ Uis description
The corners and edges Of each stone must be full
10 the lines. fair, straight draft, two inches
wide, must be run round the top and bottom beds !;
which must also be taken truly out Of wind, and
made parallel Ia each other, and OF the thickness
stated in the bill. Within the draft lines the
face OF the sretchor beds must be pointed down and
finished with common axe, 80 as To present full,
even, though rough surface, to straight edge.
For two feet Of the beds the middle of each front
and back sretChcr and the dressed portions Of the
beds OF each header must be worked more closely,
and no depression will be therein admitted exceed
rug thItt lnChcs IN dlalncteT ana nan an lnCn IN
depth, and not more than two such depressions in
tins portion Of the surface the remainder of the
beds and builds the same allowance, in this respect,
will be made as i'm the second class work.
fair draft Of an inch is to be round the front
and back Of each stretcher, and round both ends Of
each header 50 as 10 sho,o fuH corners and square
edges
The builds or joints must be dressed square 10 the
face lines and 10 the beds Of the stone No slack
joints will in any case be admitted.
The work will be laid in alternate header and
gtrcrhcr courses both beneath and above the water;
the face Of the stone being left rough will form
regular frustrated rock work ashlar, except the
ping, which will be full dressed ashar.
Quaiity Of the Stone.
All The stone embraced in the foregoing Bills must
be Of The best and most durable description Of Ora
mite or Senite and Of these two the latter will
ceivc decided preference; and in every case the
stone having the least fedspar in its composition,
and being therefore less liable TO disintegration, will
b. preferred
Specimens Of the stone proposed 10 be furnished
properly labelled, should accompany the bids, stat
ing the precise location Of the quarry. The stone