The republic. [volume] (Washington [D.C.]) 1849-1853, 1849-07-16

Sth do A headers feet inches long, feet
wide, and 25 inches thick
9th do AZ headers 7 feet inches long, 2 feet
wide and % inches thick
10th do A headers 7 feet inches long, 2 feet
wide and 25 inches thick
llth do AZ headers feet inches long, 2 feet
wide, and 24a inches thick
18th do "A headers feet inches long, 2 feet
wide and "a inches thick
In all, 5l6 blocks.
The above headers only to be dressed on the
beds and builds, which dressing is to extend feet
6 inches inwards from each end of the stone There
is no face work, but draft of an inch must be
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 fl, No. 3,
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 4S0 stretchers feet long, Is inches wide
bed, "a inches high
4th counterforts. 3Oo stretchers 81 feet long, IL
inches wide bed "a inches high.
The above sretchers 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. 1t will be per-
ceved that the back srechers and counterort stone
have but lS-nch beds, while the rise of the
is "a inches. 1t is the lSinch beds and the builds
of these stone that are to be dressed.
Bill II, No. 3,
Is the balance of the foot course.
HEADERS.-l34 lineal feet of header blocks, of
feet bed and from to feet wide on the face.
This to bc2 feet thick for feet in from the
face thence the top bed is sloped inwards, at the
rate of in six for three feet, that the inner
ends of these stone are but Is inches thick. The
beds and builds of these stone be dressed but
not the ends, except the draft before directed.
Bill B, No. /,
Includes all the Headers of the rusticated rock
work above the water.
18th course. AZ headers feet inches, feet wide
on the face, 10 inches high.
18th and 18th 76 headers feet long, feet
wide on the face, Is inches high.
These headers are to be dressed throughout their
whole length, on the top and bottom beds, and for
2. feet in from the face of the builds The face
be rusticated rock work, hereafter described.
Bill B, No. 2,
Includes all the Stretches of the rusticated rock
work above the water 9th, l4th, and 18th courses,
40 stretchers, feet long, feet bed, Is inches
high.
The beds and builds of these courses are to be
closely Creased; and the face, first class, rusticated
rock work.
Bill B, No. 3.-Coping.
434 lineal feet coping feet wide on the bed, and
from feet TO feet long, and 2 feet thick.
The coping is TO be dressed on the top and face,
according TO the specifications for the first class fine
cut work. The beds and builds are to be dressed
tK-,l.r lyog
edges and full corners The back line of the top 10
be full and square.
First Class Work.
The face and the top of The coping must be of the
usual description, of fine cut toork. Smooth and
true draft lines, two inches wide, must be
round each surface, which must be worked per-
fecHy out Of tcird within the draft lines the stone
must be dressed 70 a true, even surface, without
depression OF any kind, and finished by toong at
right angles TO the beds, and the top Of the cop
ing at right angles 10 the front line The toolng
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. /, 2,
and 3, must be sharp, clean, and true, without
break, nick, or spalling of any kind. The front
top line of the coping is TO be rounded the arrs
edge, two inches each face, or the quadrant of a
circle Of two inches radius.
The face of the stone included in Bills Nos. and
is TO be well executed Rustcated rock work :"
formed by fine cut draft lines, f,oo inches tcide run
round the surface az above specified; said draft
lines TO be sunk TO depth of not less than halt
inch, than ftoo inches, below the rough sur
face Of the face of the stone within said draft lines
The rough surface Of the face 10 be f, and round
ing from the draft lines, and in no case hollow or
sunk below the limits
Second Class Work.
On the Beds and Builds qf the fine fooled ,oork
ADORE The icater.-The srris shall be straight and
true, forming a 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 Of wind, and parallel to
each other. The surface within the draft lines
must be dressed true 10 a straight edge, without
following. No depression Of any kind will be adj
United within inches Of the face arris or 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 casc where they
shall together exceed fourth Of the area Of the
surface.
Third Class Work.
An The stone included in Bills A, Nos. !, 2, and 3,
or all that used beioD he surface " The roatr, UiH be
Of this description.
The corners and edges of each stone must be full
TO 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 20 each other, and Of the thickness
stated in the bill. Within the draft lines the sur
face Of the sretoher beds must be pointed down and
finished with axe, so as to present full,
even, though rough surface, to straight edge.
For two feet Of the beds mt the middle Of each front
and back strctcher, and the dressed portions OF the
beds OF each header must be worked more closely,
and no depression will be therein admitted exceed
ing three inches in diameter and half an inch in
depth, and not more than two such deprcssions in
this portion Of the surface the remainder of the
beds and builds the allowance in this respect,
will be made az in the second class work.
fair draftof inch IL 10 be run round the front
and back Of each strctchor and round both ends Of
each header, so as 10 shoc FIJI corners and square
edges.
The builds or joints must be dressed squareto the
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
strctcher Courses both beneath and above the water
the face Of the stone being left rough will form
regular rustcated rock -work sshlar, except the CO
ping which viii be full dressed ashlar.
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 Siene, and Of these two the latter will
cevc decided preference; and in every case the