San Antonio daily light. [volume] (San Antonio, Tex.) 1886-1907, 1893-09-01

amount of matter introduced into
the furnace. (See exhibits b and
c.. The contract, in giving the
standard by volume instead of by
weight, gave me a great deal of
bother and observation calculation.
Exhibit \ shows a range in weight
per cart from 6l0 to l,445 pounds.
1t would be unjust to call both
alike.
The furnace has to be built of
brick, land of the most modern
and improved pattern, embracing
in its construction the most
modern and improved methods of
furnace construction" The fur
mace is built of good brick and an
excellent kind of fire brick lining.
Whether the furnaces fill the other
requirements | am not able to de-
eide, not being acquainted with all
patents and new inventions, but
think that the Garretson patent is
open for improvements.
The bracing with stays and bolts
is imperfect at the north end OF
the structure, and in consequence
shows bad cracking and bullying.
The CRATE bar suspension rods have
damaged the walls also.
Cast iron, man, spreading and
ash holes are solid and sound, but
their removing without interfering
with the brick wall is doubtful.
The smoke stack is of iron. Con-
tract asks wisely for brick, as iron
under the influence, of the cOrrOd-
ing gas will wear and rust away in
a short time. The stack iswithout
anchorage and is braced with thin
guy ropes only. A brisk wind en-
dangers its stability. Further it
needs painting. The brick base
shows cracks.
The stack has not area enough to
convey the necessary air for COM
plete combustion of garbage and
fuel. The stack has an area of
3 40 square feet and stands II
feet high on brick base. Mr..
Risley, the superintendent for the
contractor, and myself found the
velocity of the air in the stack 100
feet in twenty seconds, by which
100000 cubic feet of air is con-
veyed into the furnace during
twenty-four hours.
The furnace was in operation
twenty-three and a half days and
fifteen and one-half nights, or
nineteen and One-half days of
twenty-four hours. Mr.. Ridley
reported consumed fuel during this
time: 25,40O pounds of coal; per
day, 1900 pounds coal. 5l,OOO
pounds wood per day, $500 pounds
wood, which amount requires
$4,000 cubic feet of air for OXidiz-
ing. If we subtract this from the
available amount, Q,6OO,OOO bal
ance of 100000 is left for burning
garbage. One cubic foot of gar
bage, containing l25 pounds dry
! vegetable matter, combines in
combustion with the oxygen of
1900 cubic feet of air, hence those
| 100000 are only good for 667 cubic
feet, or % cubic yards. The guar
antee asks for 80 yards, so the
chimney should have at leastdOuble
the area, a diameter say of 81 feet.
The furnace is only able to burn
% cubic yards completely; every
| thing more put in escapes as a
dangerous gas or goes out again
raw and half burned, either by the
way through the ash pit or through
the smoke stack as smoke.
After two weeks run the plant
was cooled down in order to put in
what the superintendent calls re-
| fiecting arch. At the same time
the iron CRATE was repaired and re-
placed by new suspension pipe.
| The whole CRATE costs about Sl2O
and is liable to have to be repaired
in a month. The severe tests of
| last week makes a good many re-
| pairs necessary.
1900 III coal, at $500 per day -$3.55
$500 ID wood, per day, SO cord 4.OO
Total per day S.55
One head fireman per day - 1925
One helper per day 1.25
Two men at top 300
S67;
For night work 1872;
Total per day $1,000
This labor expense is based OF
the assumption that east and west
side furnaces are in operation
When work is crowded, which
might occur even with two furna
ces, as the great amount of nigh
soil is handled by Simmang& Bros
was not presented for burning a
all, and the pumpage from cess