Daily evening star. [volume] (Washington [D.C.]) 1852-1854, 1853-09-20

CLASS No. 22.-Continued.
10Th coarse. 40 headers, feet long, 2by2
feet square;
1lth course. 10 headers, s feet inches long,
by feet square;
18th course. 40 headers, feet 4 inches
long, by feet square:
18Th course 10 headers, feet long. by 9
feet square;
14th course. 40hesders, feet sinches long,
2 by feet square;
18th course. 40 headers, feet inches long,
by feet square:
2o,olS cubic feet per cubic foot.
ID Bill, so Headers.
This bill gives the size and number of headers re
quired tor the work above the water; the face and
of which is to be dressed first class rusticated
rock-work, having latter of one twelfth.
10Th course. 40 headers, feet 10 inches
top, feet inches on bot
tom, 2 by , feet;
1Ih course 40 headers, 6 feet inches on
top, feet 10 inches on bot
tom. 2 by 2 feet:
1900 cubic feet per cubic foot.
The dressing on the first bill of headers, from the
1st to the 18th course included will be as follows,
viz:
The top surface Of each stone is to be dressed to
an even and true bed for feet inches inward from
the face end and for the width of Is inches at
foot in from the back end
The bottom bed of each stone is to be truly and
evenly dressed parallel to the top bed for feet in
ward from the face Of each header, and for width
of IS inches at foot inward from the back end.
The two sidejonts to be truly and evenly
dressed at rightangles to the top and bottom beds
for feet inward from the face end of each header
and for Is inches wide at foot in from the back
ends-that is, at foot inward from the back end Of
each header, belt of the width of Is inches the
top, the bottom and the two sides, is TO be truly
and evenly dressed, at rght-angles to each other,
and in the same lines or planes the front beds
and joints.
draft Of inch is to be cut round each end Of the
stone, showing full corners and square edges which
must continue Of full Dimensions to the xuage
within.
The parts of the stone not specified to be dressed
as above may be left rough it split from the
quarry, being Of full dimensions; but no allowance
will be made for any additional size in those parts
The dressing on the second bill of headers. from
the 10th and 18th coursds. The face end of each
header is to have clear draft, 2 inches wide, cut
roundit, with batter of inch to the foot rise
The back end is to be square to the beds, with
draft of inch run round it,
The top, the bottom, and the two sides of the 10th
course of headers to be dressed for 26 inches in
ward from the face end. and for is inches wide at
foot inward from the back end the same as the first
bill.
The top of the 18th course is to be dressed from
the face end to within foot of the back end of each
header; the bottom and the two sides are to be
dressed for rs inches inward from the face end and
for Is inches wide ct foot inward from the back
end.
The dressing on the beds and joints Of these
headers will be of the quality of "second class
work, hereinafter described.
Sd Bill, 1,500 Ssrefchers
Front and back stretchers and counter.
fort stone. chiefly for work below the
surface Of the water.
$40 front stretchers, feet long, feet
wide, and feet high;
400 back stretchers, feet long, feet
high and IS inches wide on the beds
800 counterfort stone, feet @ inches
long, feet high, aud Is inches wide
on the beds.
All the above stretchers are to be dressed
on the top and bottom beds, and two
ends; the counterfort stone, also on
the top and bottom beds. and on one
end. The face and the back, or the .
two sides Of all the stone named, are to
have a fair draft, of l inch wide, run
round them, to show full corners
and square edges; but the surface
within the draft lines may be left rough
as it was split from the quarry
The back stretchers and the counterfort
stone are but Is inches wide on tho
BEDS while the rise Of the course is "a
inches II is the lS-inch beds, and the
end or ends Of these stone, that are tn
hare the surtdce-dreSSi,ag, and he "a
inch side left rough.
1880 cubic feet per cubic foot.
4th Bill, 80 Front Sretchsrs
First class rustcatcd rock work, batter
ing inch on the face to the foot rise.
These 80 stretchers are feet long, feet
high, 2l inches wide the top bed,
and 20 inches wide on the bottom bed
The face of each stone is to be full, with
Clean fne-cut draft, inches wide,
running round it, showing clean, even
joints, with full corners and square
edges, and battering one twelfth.
The back is to have draft Of one inch
run found it square to the beds, with
full corners and square edges
1867 cubic feet, per cubic foot
18th Bill.
3I2 1neal feet fine cut coping stone, 5
feet wide on the top, and feet inches
On the bottom, in blocks of from to S
feet or more, in length, and 2 feet in
thickness.
The vertical face Of this coping is to have
batter Of one inch to the foot. dressed
according to the Specifications of first
class fne-cat work. the top surface
is also to be truly and evenly dressed.
in the saEe way, with clean, sharp
arris edges on the two sdejoints, and
back of the stone, with all the corners
full and square.
The front top line to be rounded on the
arrs edge, inches each face, or to
the quadrant of circle of 2 inches
radius.
The bottcn bed, and the two sides, are to
be dressed truly, so as to form close
even joints with sharp arris