The republic. [volume] (Washington [D.C.]) 1849-1853, 1849-07-25

It'll do AZ headers feet inches long, ieet
wide, and 25 inches thick
9Th do "A headers feet inches long, 2 feet
wide, and 25 inches thick
9th do ~ headers feet inches long, 2 feet
wide, and Is inches thick
10th do A headers feet inches long, feet
wide, and 25 inches thick
18th do AZ headers feet 8 inches long, 2 feet
wide, and 245 inches thick
18th do "A headers feet inches long, 2 feet
wide, and "a inches thick
In all, sic 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 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-
but no allowance will be made for any
excess OF size.
Bill II, No. 2,
blocks and counterfort encasement stone, from the
foot course to the surface of the water.
LIST front. 1853 stretchers feet long, 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, 10 inches wide
bed, "a inches high.
4th counterforts 30S stretchers 81 feet long, Is
inches wide bed, "a inches high.
The above stretchers required to be dressed
only on 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 alone to be
dressed, with the exception of fair draft of an inch
round the face and back of each stone 50 as to
show full courses and square edges II will be per-
ceved that the back stretchers and counterort stone
have but l8-inch beds, while the rise of the course
is "a inches. 1t is the lSinch beds and the builds
of these stone that are TO be dressed.
Bill fl, No. 8,
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 course is to be 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 to 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 courses. rs headers feet long, feet
wide ON the face, 10 inches high.
These headers to be dressed throughout their
whole length, on the top and bottom beds, and for
p feet in from the face Of the builds The face ia TO
be rusticated rock work, hereafter described.
Bill b, NO. z,
Includes all the Stretches of the rustcated rock
work above the water l3th 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. S.-Coping.
434 lneal feet coping, 5 feet wide on the bed and
fror X feet IN X feet and feet IL
The coping Is 10 be dressed on the top and face,
according TO the specifications for the first class fine
cut work. The beds and builds TO be dressed
truly, a 10 make close joints with sharp arris
be full and square.
First Class Work.
The face and the top of the coping must be Of the
usual description, Of fine cut UUk. Smooth and
true draft fines, two inches wide, must be run
round each surface, which must be worked per-
eefy out of ,rind within the draft lines the stone
must be dressed to 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
10 be such would be produced by patent ham
mer of six blades 10 an inch.
The arris edges Of all joints Of the work above the
surface Of the water included in Bill B, Nos. ], q
break, nick, or spalling Of any kind. The front
top line Of the coping Is TO be rounded on the arrs
edge, two inches on each face or the quadrant Of
circle Of two inches radius.
The face of the stone included in Bills Nos l and
2 IL 10 be well executed " Rusticated rock work, /"
formed by fine cut draft lines, hco inches ride
round the surface above specified; said draft
lines TO be sunk to a depth Of not less than half
inch, than f,co 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 no case hollow, or
sunk below the limits.
Second Class Work.
On The Beds and Builds qf the fine tooied ,ook
above the ,oatr.-The arris 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 out 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
nitted within inches Of the face arris within
the draft lines ON the back and joint; 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 one-fourth Of the Of the
surface.
Third Class Work.
An The stone included IN Biiis A, Nos |, 2, and 3,
all that used beio,o he swfaoe q The ,oater, ,ciH BE-
qf Dns description.
The corners and edges Of each stone must be full
wide, must be run round the top and bottom beds
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 sur
face of the sretober beds must be pointed down and
finished with a common axe, 20 "a TO present full,
even, though rough surface, 70 straight edge.
For two feet Of the beds at the middle Of each front
and back sretcher and the dressed portions Of the
beds Of each header must be worked more closely,
and no depression viii be therein admitted exceed
ing three inches in diameter and half inch in
depth, and not more than two such depressions in
this portion Of the surface the remainder of the
beds and builds the same allowance in this respect,
will be made in the second class work
fair draft Of inch Is TO be round the front
and back Of each stretcher, and round both ends Of
each header, 90 10 shov fun corners and square
edges.
The builds or joints must be dressed square 10 the
face lines and 70 the beds Of the stone. No slack
Joints will in any case be admitted.
The work viii be laid in alternate header and
srechef courses both beneath and above the water;
the face Of the stone being left rough will form
regular rustcated rock work ashlar, 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 sienie and Of these two the latter viii re-
ceive decided preference; and in every case the
stone havinr tbe least fcdspar in its composition