The republic. [volume] (Washington [D.C.]) 1849-1853, 1849-07-26

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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 d-
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, 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, Is inches wide
bed, "a inches high.
4th counterforts. 30S stretchers s. 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
tom, and the two ends of the stone are alone be
dressed, with the exception of fair draft of an inch
round the face and back Of each stone, 30 to
show full courses and square edges. 1t win be per-
ceved that the back strechers and counteror stone
have but lSinch beds, while the rise of the course
is "a inches 1t is the l8inch beds and the builds
of these stone that are to be dressed.
Bill fl, No. 8,
Is the balance of the foot course.
HEADERS-I34 lineal feet of header blocks Of
5 feet bed, and from to feet wide on the face.
This to be feet thick for feet in from the
face, thence the top bed is sloped inwards at the
rate of one in six for three feet, that the inner
ends of these stone 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 2 feet wide
on the face, Is inches high
l4th and 18th courses. 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
% feet in from the face of the builds. The face is
be rustcated rock work, hereafter described.
Bill b, No. 2,
Includes all the Stretches of the rusticated rock
work above the water, 18th, l4th, and 18th
| 100 stretchers, feet long, feet bed, Is inches
| high.
The beds and builds of these courses are to b.
closely dressed and the face, first class rusticatec
! rock work.
Bill B, No. 3.-Coping.
434 linea feet coping 5 feet wide on the bed, and
| from feet to feet long, and 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
edges and full corners. The back line Of the top 10
/ be full and square.
First Glass Work.
The face and the top of the coping must be of the
usual description, of fine cut irork. Smooth and
4 true draft lines, two inches wide, must be run
round each surface, which must be worked per-
fectiy out of tcnd 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
| to be such would be produced by patent ham
mer Of six blades 10 inch
The arrs edges Of all joints of the work above the
surface Of the water included in Bill Il, Nos. |, g
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 srris
edge, two inches each face, the quadrant of a
\ circle of two inches radius.
The face Of the stone included in Bills Nos. | and
is TO be well executed " Rusticated rock work, ''
formed by fine cut draft lines, t,ro inches tcds, run
/ round the surface as above specified; said draft
lines TO be sunk 10 depth of not less than half
inch, more than t,oo 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 case hollow, or
sunk below the limits
Second Class Work.
On the Beds and Build, Of The fine fooled ,ook
Adore the inat1.-The srris shall be straight and
|
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 70
each other. The surface within the draft lines
must be dressed true TO straight edge, without
! following. No depression of any kind will be adj
mitted within 8 inches Of the face arris within
| the draft lines the back and joints; and none
will be admitted on the beds builds exceeding 6
inches diameter and one inch in depth, nor closer
together than one FOOT and IN no case where they
shall together exceed fourth Of the Of the
! surface.
Third Class Work.
AH the stone included IN Bills A, Nos. ], 2, and g.
all that used beio,D The surface Of the toaer tciH b,
Of This description.
The corners and edges Of each stone must be full
to the lines. fair, straight draft, two inches
| wide must be 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 sretcher beds must be pointed down and
finished with common axe, 30 as 10 present full,
| even, though rough surface, to a straight edge.
For two feet OF the beds at the middle Of each front
and back strecher 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 same allowance, in this respect,
1 will be made as in the second class work
fair draft of inch is 10 be run round the front
and back Of each stretcher and round both ends of
each header, 50 as 10 shoU fun corners and square
edges
The builds joints must be dressed square TO the
face lines and to the beds Of the stone No slack
! Joints will in any case be admitted.
The work will be- laid in alternate header and
strecher courses, both beneath and above the water
| the face Of the stone being left rough will form
regular rusticated rock work sshlar except the CO.
ping, which will be full dressed sshlsr.
Quality Of The Stone.
All the stone embraced in the going Bills must
be Of the best and most durable description Of G ra
mite or senite, and Of these two the latter will re-
ceive a decided preference; and in every case the
sonc having the least feldspar in It's cnrnnositinn