The republic. [volume] (Washington [D.C.]) 1849-1853, 1852-03-03

spanureIs OF the rotundo, and which ten feet in
diameter, extending from the top of the building
TO the cellar; culverts will be constructed for con
yey:ng the air from these shafts 10 the furnace
chambers In the wings, and the pure air will be
drawn down and forced through the chambers
where it will be warmed in its passage 10 The
rooms. This artificial draught will be created by
means OF fans placed at the bottom of the air shaft
and worked by small steam engine ere
the cellar OF the centre building, ar" -.'eG III
ally at work during co.. woo,h, WI ooh .to.
into every r. &c OF warm air will be thrown
,m,U e,'', ON, by which corresponding vol
~ ar previously in the room will be dis.
P'aCeu' thus assisting the process of ventilation
ana creating circulation OF the atmosp here which
could not be attained by any other process
me iaiiure OF furnaces to warm buildings cover.
ing lnrge area may generally be attributed to
the uliiculty with which warm air 10 convened in
horizontal direction the evity il attains by rare.
faction VIII give Z an upward draught of velo.
Guy III proportion 10, its temperature, in compare
soE TO That OF the external air; but its levty has
o1t little effect in carrying it horizontally; hence
II Is necessary 10 force the air through the heating
medium, without which uniform supply can eel,
dom be attained
AIR thus admitted, armed, and forced into the
rooms, cannot fail to be agreeable as well as heal
my, IL VIII be taken from an elevation above all
impurities, and admitted at n point shielded from
the smoke and gas of the chmneys by the heavy
projecting postico Of the centre building; in its
passage around the hot-w water pipes il can never
No'iie toiiluCt Win surfaces heated above Dlp9
Fahrenheit, and can therefore never receive an ex
cess OF carbonic acid gas, nor suffer dilninuton
OF moisture.
BY proper execution of this plan of heating,
every part Of the buildings will be rendered warm
and comfortable during the coolest weather and
open fires Will be unnecessary have, however
thought 1t best to introduce freplaccs in all the
rooms throughout the building, as well as in the
nails OF Legislation, as many of the members are
accustomed TO open fires, and would not be willing
TO riapense with them.
tlues for ventilation will be constructed from all
me rooms throughout both buildings, to lead to
foul air chambers between the upper tier of arches
and the roof; connected with these chambers air
shafts Will be built TO extend above the roof in
which artificial heat will be introduced, so as to
Keep rp at all times an ascending current of sutt-
clen velocity TO free the and halls of legis
lntion rom all deterioratcd air. This system of
ventilation would be sufficient of itself to render
all the apartments agreea bic and healthy; but when
considered IN connexion with the plan of heating
which has just been described there can be no doubt
oil a satisfactory result
The Senate Chamber and the Hall of Represent
atlves are both designed with reference to the prn,
clpies OF acoustics The magnitude Of these rooms
especially the latter, and the fact that they are TO
DC constructed for speaking in from every point.
render necessary to avoid all forms that would
produce echoes, and at the same time to present re-
Hecllng surfaces enough TO give power 10 the voice
without resolving the sound with greater intensity
on one point than on another. To attain these OBJ
lects the rooms are made rectan gular and the cell
ings comparatively low and flat and have no
doubt mat with proper attention to establish acous-
NC principles, IN the arrangement of the details OF
the rooms. they will be free from echoes no matter
IN what part the speaking may take place.
nave estimated the cost of executing the entire
design, IN accordance with the drawings and mo.
del, the whole 10 be faced with white marble and
finished in substantial and workInaplike man
her' and IND that every expense will be covered
- $500 ..'.......... 81, 200
oi which there have already been APP
proprlated by Congress. 100, 900
Leaving, as the amount required to
complete the work. s., SIS, 900
ms estimate 10 founded upon the ASSUMPTION
mat the interior Of the buildings will not be
more extensively finished than the present Capi.
to; Il, therefore, it should be hereafter decided 10
Introduce architectural embellishments of a more
ornate or expensive character the cost will be pro
poruonately augmented.
The shortest time in which the work can be well
and substantially done, and the terraces and
grounds completed, is five years from the present
date; but which, Of course, will depend on the ne.
oessary appropriations being made by Congress,
10 as 10 ADMIT Of It's advancing as rapidly as poss
Die, without suspension or hindranCe.
The cellars may be finished and the basement
story constructed and vaulted during the ensuing
season IN the secOnd year the exterior walls NAV
be raised 10 their entire height, and the princip.
story yaultcd. Ii will require the third wear 10
vault the upper story and put the buildings under
root; alter which there will be as much work a,
can he accomplished IN two years in constructing
The porucos, finishing and furnishing the int.
nor, and completing the terraces and grounds.
BY an Congress approved September 81. 1850.
there was appropriated for the extension of tb,
capitol, as before stated, the cum Of : 100 900 O0
Oi which there have been expended 10
the present date, (Decemter %,
1871 ........................ ss,Oo2 50
leaving an uncrpendod balance or sII.gI7 IA
Out OF which sundry bills for materials and the
wages Of the workmen for the present month are
10 De paid, the aggregate amount Of which, as
nearly az can now be estimated, will be about
: 1000.
a detailed account OF the expenditures from the
commencement Of the work TO the 3lst Of the pres
ont month inclusive, will be transmitted to you on
the lsi day Of January ensuing.
mere viii be required, cary the work during
the remainder Of the present fiscal year ending
June 80, l,J2...................... : $50 600 OH
And during the ensuing hscal year
ending June 80, lsj3..........:.... $50 900 90
MAKING ........ ........... 81 10000 ~
-
TIE Patent O1iee B'nldings. On the 2g,b Of Jolly
iast received an official letter from YOU placin,