The republic. [volume] (Washington [D.C.]) 1849-1853, 1849-07-28
CLASS No. /.

wide, and 25 inches thick
7th do ~ headers 8 feet inches long, feet
wide, and Is inches thick
Sth do a. headers feet inches long, feet
g wide, and % inches thick
9Th do AZ headers feet inches long, 2 feet
wide, and 25 inches thick aeC
10th do "A headers feet inches long, feet
wide, and 25 inches thick
18th do AZ headers 6 feet 8 inches long, 2 feet
wide and 241 inches thick
18th do "A headers feet inches long, feet
wide, and "a inches thick
In all, 5l6 blocks.
The above headers are only to be dressed on the
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 null TO the
gauge within. The ends and middles Of the stone
may be left split from the quarry being full d.
but allowance will be made for any
excess OF size.
Bill II, No. 2,
Includes all the front and back stretchers closing
blocks, and counterfor encasement stone, from the
foot course to the surface of the water.
LIST front 46S stretchers feet long, feet wide
bed, "a inches high.
I'd front "a blocks feet long, feet wide bed, "a
inches high.
Sd back 40 strctchcrs feet long, lS inches wide
bed, "a inches high.
4th counterforts. 306 stretchers 81 feet long, Is
inches wide bed, "a inches high.
The above stretchers 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 an inch
round the face and back Of each stone, as to
show full courses and square edges. II win be per-
ceved that the back sretchers and counerfot stone
have but ls-nch BEDS while the rise of the course
is "a inches. 1t is the lS-inch beds and the builds
of these stone that are to be dressed
Bill A, No. 8,
Is the balance of the foot course.
HEADERS. -l34 ineal feet of header blocks Of
S feet bed, and from to feet wide on the face.
This course be feet thick for feet in from the
face, thence the top bed is sioPed nwards, at the
rate of one in six for three feet that the inner
ends Of these stone are but 10 inches thick. The
beds and builds of these be dressed but
not the ends, except the draft before directed.
Bill B, No. 1,
Includes all the Headers of the rusticated rock
work above the water.
18th course AZ headers feet inches, feet wide
ON the face, Is inches high.
l4th and 18th rs headers feet long feet
wide on the face, IL inches high
These headers are to be dressed throughout their
whole length, on the top and bottom beds, and for
81 feet in from the face of the builds. The face Is TO
be rusticated rock work, hereafter described.
Bill B, No. 2,
Includes all the Stretches of the rusticsied rock
work above the water, 18th, l4h, and 18th courses
100 stretchers, feet long, feet bed, 10 inches
high.
closely dressed and the face, first class rrseated
rock work.
Bill B, No. 3.-Coping.
4s4 hneal feet coping, 5 feet wide the bed; and
from feet 10 8 feet long, and feet thick.
The coping Is to be dressed on the top and face
according 70 the specifications for the first class fine
cut work The beds and builds are TO be dressed
truly so as 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 faos and the top Of The coping must be OF the
usual description, Of fine cut icUk. Smooth and
true draft lines, two inches wide, must be run
round each surface, which must be worked per-
fecfIp oia of rind within the draft lines the stone
must be dressed 10 true, even surface, without
depression Of any kind and finished by toolng at
right angles TO the beds, and on the top OF the cop
ing at right angles to the front line. The toong
10 be such would be produced by patent ham
mer Of six blades 10 an inch.
The arrs edges Of all joints Of the work above the
surface Of the water included in Bill b, Noe. 1, 2,
and 3, must be sharp, clean, and true, without
break, nick, or spalling OF any kind. The front
edge, two inches on each face, the quadrant Of
circle Of two inches radius.
The face of the stone included in Bills Nos. and
2 il 10 be well executed Rusticated rock work, -
formed by fine cut draft lines ttoo inokss vtds, run
round the surface az above specified; said draft
lines 70 be sunk a depth Of NOT less than half
inch, or more than f,co inches below the rough
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 no case hollow or
sunk below the limits
Second Class Work.
On the Bed, and Bulds ef d. fine fooled ,ook
abous The toater.-The arris shall be straight and
true, forming close, and clean even joint. True
draft lines inches wide must be 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 sd-
mittcd within inches Of the face srris OF within
the draft lines on The back and joints and none
will be admitted on the beds or builds exceeding
inches diameter and one inch in depth, nor closer
together than one foot and in no case where they
shall together exceed oneforth Of the area Of the
surface.
Third Class Work.
du The sfon< included in Biils a, Nos. ], q and g.
oil that ussd beiop ds r,efact af The patv, viH be
af Dtis description.
The corners and edges Of each stone must be full
TO the Inca A fair, straight draft, two inches
wide, must be nun round the top and bottom beds I;
which must also be taken truly out Of wind, and
made parallel 10 each other, and Of the thickness
stated in the bill Within the draft lines the
face Of the sretcher beds must be pointed down and
finished with common axe az TO present FULL
even, though rough surface, 10 straight edge
For two feet Of the beds the middle Of each front
and back suetcher, and the dressed portions Of the
beds Of each header must be worked more closely
and depression will be therein admitted exceed
ing three inches in diameter and half an inch in
depth, and not more than two such depressions in
this portion Of the surface; the remainder Of the
beds and builds the allowance, in this respect,
will be made in the second class work.
fair drsftof an inch l. TO be round the front
and back Of each stretcher and round both ends Of
esch header, 20 as 20 show fun corners and square
edges, $3.50.
face lines and 70 the beds Of the stone. No slack
Joints will In any case be admitted.
The work will be laid In alternate header and
stretcher courses both beneath and above the water
the face Of the stone being left rough will form
regular rusticated roc work sshsr, except the
ping, which will be full dressed sshlar
Quality 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 re-
ceive decided preference; and in every case the
stone having the least feldspsr N its composition,