Omaha daily bee., 1910-02-06

OF heat into the room and still allow the
smoke to escape up the chimney is not a
difficult problem IL a few simple rules in
regard to the construction Of the chimney
throat are followed and the proper proper
ton between the size OF the fiue and the
size VI the fireplace opening maintained,
In tryilg to obtain this result with the
greatest economy in fuel complications
First of ball, the chimney should be built
sometimes Aarise with annoying results.
higher than the nearby roof ridges. and
there should be no tree branches hanging
over II to retard the draft. There should
also be a sepatate flue for each fireplace,
with no stove connections into fireplace
flues. If the chimney is built on the out
side OF the house, having an outside wall
exposed to the Weather, there should be a
double wall at the back, having a two
inch air space This will prevent the OUT
side brickwork from cracking when the
fireplace is being used during cold weather
The unsightly cracks SO often seen on
the face Of an outside chimney breast are
due to the fact that in cold weather, when
the fireplace is being used, the brickwork
is expanding on the inside and contracting
on the outside under the opposing influ-
ences Of heat and cold. The shape of the
fireplace makes considerable difference in
the amount Of heat thrown out. Splayed
sides reflect more heat into a room than
sides that are at right angles to the front
and back. An iron lining to the fireplace
will also reflect considerable heat, al
though 1t will last only a year or two
without being renewed.
The back of the fireplace should incline
forward, starting at a point a little over
half way up the back of the fireplace;
the brick arch. either flat or segmental.
with a soffit underneath OF about four
inches, giving little surface for~the smoke
to strike against and reflect into the room.
TIL throat. long and narrow, should con-
tract gradually TO the center until it is OF
the same width as the flue at the center,
and from there it can be& carried TO either
side required in order TO bring it alongside
OF the fiue coming from the basement
should there be one.
In no case should the flue arise directly
from one side Of the fireplace. since this
would cause il to smoke on the opposite
side, The sectional area of the throat and
OF the flue also, should be one-tenth the
area of the fireplace opening. For eX-
ample, il the fireplace opening is four feet
wide and two and one-half feet high, the
sectional area OF the opening would be ten
square feet this, divided by ten, gives a
flue twelve inches square. and the throat
at it's opening would be three inches by
forty-eight inches, both throat and flue
having a sectional area OF IA square
inches, or one-tenth the fireplace opening.
An important consideration is the depth
OF the fireplace, The distance from the
face OF the fireplace to the fire brick back.
when intended 10 burn wood, should never
be less than eighteen inchs; and fourteen
inches for a coal CRATE, These are the
minimum depths; il is advisable, in either
case, to make them two inches deeper. Tho
fireplace intended 20 burn cord wood,
should be at least four feet six inches
wide The dimensions OF fireplace open
ings vary according 70 the design. They
are usually from thirty TO forty-eight
inches wide. eighteen inches deep and from
twehty-four to thirty-six inches high. In
large ball rooms, club rooms. cafes, hotel
p%arlors, etc, they may greatly exceed
these dimensions, while a coal CRATE for a
bedroom or den may be much smaller.
In order to avoid frequent repairs. and