Isthmian Canal Commission (U.S.).

Canal Record (Volume 4 no.1-52) online

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measurement by 20| cubic yards. Of the
total concrete, 13,524 cubic yards were
placed in the upper lock, 47,1 19| cubic yards
in the middle lock, and 11,460 cubic yards in
the lower lock. The concrete work for the



Item.


Unit.


Atlantic.


Central.


Pacific.


Total.






97,613

455,318


1,624.584
4,304


35.016
474.201


1.757.213
933.823








552.931


1,628,888


509.217


2,691,036








1,870




1.870
21,268




Cubic yards

Cubic yards

Tons (Gross)...
Feet


21,268






21,268


1.870




23.138




574 1M9


1.C30.75S


509,217


2,714,174




512,741

78,712

62.00

64,212




119,739

57,907

27.05

45,869

"i.58

61.274
59,201
1.44

1,868
600

4.278
2.31


632,480

136.619

286.75

502,406
16.47
24.D6

133.910
142.152
4.07

6.153

1,320

29,148

21.531

1.46








197.70
392.325

16.47

i0.S2

396
743












1.66

72.240
82.208
2.63

3,32:!

394

17,350

8.334

2.00
















963

326

10.798

8,919

1.11





















Atlantic Division.

GATUN LOCKS.

Excavation — Shovel excavation during the
month was continued in the lower lock, and
outside the Canal prism, for the purpose of
obtaining impervious material for back fill.
A total of 68,023 cubic yards of material was
removed. Of this quantity, 24,393 cubic
yards were excavated for back fill. On Feb-
ruary 28 the total material removed amounted
to 5,728,864 cubic yards. The shovel exca-
vation in the locks was 97.3 per cent completed,
the channel excavation in the lower lock
85 per cent completed, and the excavation
of culvert trenches by crane, 55 per cent com-
pleted.

Back Fill — Back filling behind the walls of
the upper and middle locks was continued.
The quantity placed during February aggre-
gated 41,153 cubic yards, increasing the total
to 301,870 cubic yards. On February 28
the back fill was 25.07 per cent completed.

Receiving and Issuing Material — The re-
ceipts of material during the month exceeded
the consumption, with the exception of sand,
the consumption of which exceeded the re-
ceipts by 1,025 cubic yards.

Mixing and Placing Plants — These plants
were kept in satisfactory operation during
the month. Three portable mixers were in
use intermittently during the month, two
being employed in placing concrete in oper-
ating tunnels, and one in building a molding
platform for reinforced concrete piles.

Power Plant and Pumps — The operation of
the power plant and pumps during the month
was satisfactory.

Iron and Steel Work — During the month
the setting of steel in Stoney gate valves was
continued, and the setting of the sills of the
lower gates of the middle lock was completed.

Concrete Work — There was a decrease of 815



entire lock system was 55 per cent completed
at the end of February.

OPERATION OF THE PERMANENT AND AUXILIARY CON-
CRETE CONSTRUCTION PLANTS, GATUN LOCKS.





Permanent


Auxiliary




Plant.


Plant.


Length of working day (hours). .


12.22


8.50


Average number of hours per






day worked per strand of






cableway laying concrete and






large stone (actual workinr






time) . .


8.19




Average number of mixers per








6 00




Average hourly output per mixer.






(actum 1 working time) cu. yds.


58.73


58.40


Average amount of concrete and






large stone laid per hour, per






strand of cableway, (actual








35.01






4.385J


665


Concrete laid, cableways, cu. yds.


49.213




Concrete laid, through chute in-









5,304




Concrete laid, derrick, crane










10,950
1.606*










Total amount concrete and








5S.902J


13.221J



Concrete from the auxiliary plant is placed by der-
ricks, crane, and a lift. It is, therefore, impracticable
to estimate the average amount placed per hour by
each of these units.

GATUN DAM.

Construction during the month increased
the total fill, as determined by cross sections
of the material in place, by 512,741 cubic
yards, making the total amount in place
12,276,078 cubic yards.

Hydraulic Fill — The dredges increased the
hydraulic fill by 301,733 cubic yards. The
total hydraulic fill in place on Febraury 28
was 6,290,960 cubic yards.

Dry Fill — The material received from the
Central Division, the locks, the spillway, and
the plant excavation, amounting to 211,008
cubic yards, was placed on the north and
south toes of the dam, east and west of the



spillway, making the total dry fill in place
5,985,118 cubic yards.

GATUN SPILLWAY.

Excavation — In preparing the foundation
of the spillway dam, 6,881 cubic yards of rock
were excavated by hand behind the east and
west coffer dams, increasing the total spillway
excavation to 1,57S,006 cubic yards.

Concrete — The construction piers of the
spillway dam were completed to elevation
plus 45, and the building of the ogee mono-
liths and the heavy floor below was continued
behind the east and west coffer dams. The
amount of concrete placed during the month
aggregated 6,609 cubic yards, which increased
the total to 122,387 cubic yards.

HARBOR AND CHANNEL SECTION.

Excavation Below Sea Level at Mindi — Dur-
ing the month 4,504 cubic yards of earth and
37,398 cubic yards of rock were removed from
the prism by two 70-ton steam shovels work-
ing a total of 42 days. In addition, 5,200
cubic yards of mud were sluiced from the cut.

Dredging from the Ocean to Mindi — Five
dredges removed 236,881 cubic yards of earth
and 39,232 cubic yards of rock from the Canal
prism. In addition, the dredge Mindi re-
moved 21,263 cubic yards of earth from the
channel to, and in front of, Dock No. 14. On
February 28th, 40 feet of water could be
carried from zero to zero plus 3,900 feet; 30
feet to mile 4 plus S00 feet; 20 feet to mile 5
plus 2438.9 feet, at the junction with the
French canal.

Dredging from Mindi to Gatun Locks — The
dredge Sandpiper removed 179,205 cubic
yards from the Canal prism at mile 6 plus
3,300 feet to mile 6 plus 400 feet.

PORTO BELLO.
PERFORMANCE OF ROCK CRUSHER PLANT.

Length of working days — hours

From 1st to 14ih, inclusive 10:00

From 15th to 28th. inclusive 8:00

Average number of houis worked per day —

From 1st to 14th. inclusive 7:68

From 15tn to 28th. inclusive 648

Average number of cubic yards per hour of
working da^ —

From 1st to 14th, inclusive 334.3

From 16th to 28th, inclusive 365.0

Average number of cubic yards per working
hour —

From 1st to 14th. inclusive 435.4

From 15th to 28th, inclusive 450.8

Maximum day's output, (10 hours) 9 hours

34 minutes actual working time. cu. yds. . 4,042.0
Maximum day's output. (8 hours) 7 hours 31

minutes actual working time, cu. yds 3,339.0

Average day's output, (23 days) cu. yds.. . . 3,141.0
Average hourly output, (193 hours 30 min-
utes) cu. ydss 373.0

SAND, STONE AND CEMENT SERVICE.

In connection with this service plant
steamed 11,578 miles, handled 842 barges,
and carried 2,068 passengers.

TORO POINT.

Colon Breakwater — Forty thousand four
hundred and sixty-six cubic yards of material
were excavated, of which amount 1,635 cubic
yards were placed in track fill, and 38,831
cubic yards in breakwater fill. The double
track trestle was extended 370 linear feet.
On March 1 the trestle extended 3,110 feet
from shore. The total amount of rock
dredged and dumped on the west breakwater
to February 1, 1911, was 430,056 cubic yards.
During the month 39,232 cubic yards of rock
were dredged and dumped, increasing the total
to 469,288 cubic yards. The amount of dry
fill placed to March 1 was 188,510 cubic yards.

NOMBRE DE DIOS.

During the month 76 barges containing 33,-
513 cubic yards of sand were shipped to Gatun.

MUNICIPAL ENGINEERING.

The reservoirs, water mains, sewers, roads,



March 22, 1911.



THE CANAL RECORD



23?



and oil pipe lines were maintained and ex-
tended as required to facilitate construction
work. Work was continued on the Colon
municipal improvements.

Central Division.

During the month of February the total
amount of material excavated in the Central
Division was 1,630,758 cubic yards, of which
477,477 cubic yards were classified as earth
and 1,153,281 cubic yards as rock. Of this
quantity 1,600,597 cubic yards were removed
by steam shovels, 5,096 cubic yards by scraper,
16,699 cubic yards by bucket cranes, and 870
cubic yards by hand. Contractors removed
4,304 cubic yards by sluicing, and 3,192 cubic
yards by hand. Of the total, 1,600,372 cubic
yards consisted of primary excavation for the
Canal prism, 5,736 cubic yards permanent
diversion useful after the Canal is completed,
and 22.7SO cubic yards of silt deposited in
completed sections of prism. The total work
excavation amounted to 1 ,62S,S8S cubic yards.
In addition, 1,870 cubic yards of gravel were
excavated outside of the canal prism for ballast
and concrete use.

The daily average number of steam shovels
at work during the month was 4S.41, and the
total number of shovel days was 1,114, as
compared with 47.68 shovels at work during
the month of January, with 1,192 shovel days.

For comparison with the work done by
steam shovels during the corresponding month
of the previous year, the following table has
been prepared:



Period.


Excava-
ted by
shoveis.


Classification of
material.


KSo

-;■= 6

o ■


-
V

u

M

■i
.'3


si

■o ■




Rock.


Karth.




1910:

Feb....

1911:
Feb....


Cu. Yds
1 5 J3.223

1.600.598


Cu. Yds.
1.126.501

1.150.353


Cu. Yds.
376,722

450,224


51-35
48.41


c. y.

1,272 8
1,436 8



Rainfall at Empire: 1910. .76 ins.: 1911. .55 ins.

The above table shows the average output
per shovel to be 12.88 per cent greater in
February, 1911, than in the corresponding
month of the previous year.

The total amount of material excavated
from the prism in the Culebra section of the
Central Division in February, 1911, 1,403,602
cubic yards, was the highest record in that
section for the month of February-, the pre-
vious high record for the month having been
in February, 1910, when 1,259,173 cubic yards
were removed.

The total estimated amount of material to
be removed in the Central Division was
97,125,018 cubic yards, and up to March 1,
1911, 71,033,522 cubic yards had been re-
moved, leaving 26,091,496 cubic yards to be
removed in order to complete all excavation
in the Central Division. From these figures
it will be seen that 73.14 per cent of all exca-
vation in the Central Division had been com-
pleted up to the close of the month of Feb-
ruary, and 26.86 per cent remained uncom-
pleted.

Considering the two sections which com-
pose the Central Division, the excavation
completed and that to be completed at the
close of February operations, were as follows:

CULEBRA SECTION.

Cubic Yards.

Completed S9. 671,665

To be completed 24,515,059

CHAGRES SECTION.

Completed 11,361,857

To be completed 1,576.437

From the above figures it will be seen that

the Culebra section, locally known as Culebra



Cut, was 70.S8 per cent completed, with
29.12 per cent to be completed; the Chagres
section was 87.82 per cent completed, with
12.18 per cent to be completed.

During the month 780 cubic yards of ma-
terial were hauled from the Canal prism and
dumped in the embankment for the roadbed
of the relocated Panama railroad in the vicin-
ity of Pedro Miguel. The total amount of
spoil from the Central Division used for this
purpose at the close of the month was 3,743,-
354 cubic yards. The Central Division also
delivered at Gatun 193,479 cubic yards of
rock and earth for use in the construction of
the dam, making the total for this purpose at
the end of February 2,906,534 cubic yards.

The daily average number of laborers at
work on the whole division during the month
was 7,991, and the daily average number of
gold employes 928.

Pacific Division.
DISTRICT NO. 1 — LOCKS AND DAMS.

Excavation — The total excavation during
the month amounted to 35,016 cubic yards.

Filling and Embankment — During February,
no additional dry filling was added to the
prism of the west dam at Pedro Miguel, the
total amount of material in place at the close
of the month remaining at 260,852 cubic yards,
as previously reported. The back fill at
Pedro Miguel was increased by 31,399 cubic
yards, the total in place at the end of the
month amounting to 92,558 cubic yards.

At Miraflores, 32,404 cubic yards were
added to the dry fill in the toes, and 87,335
cubic yards to the hydraulic fill in the core of
the west dam, making the totals at the end
of the month 666,952 cubic yards and 471,290
cubic yards respectively. The back fill was
increased by 1,280 cubic yards, making the
total amount in place at the end of the month
135,885 cubic yards.

PEDRO MIGUEL LOCKS.

The back filling of the west wall was con-
tinued, as was also the work of dismantling
berm crane "G", the cantilevers being re-
moved and taken to Miraflores where the
erection of one of them was commenced on
the west berm crane already partly installed.
The placing of anchor bolts and castings for
Stoney valves, and other iron, was continued,
about 935,000 pounds of iron being placed
during the month.

Concrete Work — The concrete work at Pedro
Miguel for February showed a decrease of
1,502 cubic yards over the figures for January.
The total amount placed was 37,011 cubic
yards, including 26 cubic yards of large stone.
The concrete was placed as follows: 10,647
cubic yards in the east wall; 500 cubic yards



OPERATION OF THE PERMANENT AND AUXILIARY CON*
CRETE CONSTRUCTION PLANTS AT PEDRO MIGUEL.





Permanent
Plant.


Auxiliary

Plant.


Length of working day (hours). . .

Average number of hours per day,
per unit, worked laying con-
crete and large stone (actual


8.00

5.23

2.00

Cu. Yds.

74.44

59.00


8.00
3.70


Average number of mixers per


3.36


Average hourly output per mixer
(actual working time)

Average amount of concrete and
large stone laid per hour, per
chamber crane (actual working


Cu. Yds.
38.02








8.00 1 18.00




28.399.00 | 8,586.00








28,407.00 | 8/04.00



Auxiliary plant consists of three 2-cubic yard
mixers, and one §-cubic yard mixer, and locomotive
cranes and derricks averaging 2.83 units per day for
the month of February.

MIRAFLORES LOCKS.

Work on the west storage trestle at Mira-
flores, and the filling of the dike at the Agua
Dulce pumping station were continued. The
excavation of rock in the lower lock site was
commenced.

Concrete Work — The total amount of con-
crete and large stone laid was 20,896 cubic
yards, as compared with 24,018 cubic yards
during January. The concrete was placed
as follows: 12,623 cubic yards in the east
wall; 7,406 cubic yards in the center wall;
and 867 cubic yards in the floor.

OPERATION OF THE PERMANENT AND AUXILIARY CON-
CRETE CONSTRUCTION PLANTS AT MIRAFLORES.





Permanent
Plant.


Auxiliary
Plant.


Length of working day (hours). .

Average number of hours per day
per unit, worked laying con-
crete and large stone (actual


8.00
7.55


8.00
6.25


Average number of mixers per


4.65


Average hourly output per mixer


Cu. Yds.


Cu. Yds.
13.19


Average amount of concrete and
large stone laid per hour per
chamber crane (actual work-


55.08










217.00
9.344.00


280.00




11,055.00








9,561.00


11,335.00







Permanent plant consists of one berm crane opera-
ting one boom, placing concrete.

Auxiliary plant consists of two 2-cubic yard mixers,
five i-cubic yard mixers, and one i-cubic yard mixer ;
i-yard and i-yard mixers discharged directly into
forms.

DISTRICT NO. 2 — DREDGING.

The following is a statement of the output
of the five dredges which were in operation
during the month, and of the amount of
material excavated hydraulically:





Type.


Work.


PLANT.


Total.


Remarks.


Dredge.


Earth.


Rock


Earth.


Rock.




Dipper

Ladder

Ladder

Ladder

Suction... .


Cu. Yds.

31.760
22.128
7.150
67.875
233.606


Cu. Yds.

18,967


Cu. Vds.


Cu. yds.


Cu. Yds.

50.727

105.171

11,817

6S.5SS

251,256


Place measurement




83,583




Place measurement




4.667
713




place measurement








Place measurement




17,650




Scow measurement












362.519
*87.335


24.347


101,233




488,099
87.335










Place measurement














149,854


24,347


101.233




575,434

















^Excavated from lower lock site at Miraflores.



in the east head wall; 8,656 cubic yards in
the west wall; 241 cubic yards in the west
head wall; 16,340 cubic yards in the center
wall- and 627 cubic yards in the floor.



CHAME SAND EXCAVATION.

Approximately 39,300 cubic yards of sand
were excavated at Punta Chame and delivered
at Balboa.



238



THE CANAL RECORD



Vol. IV., No. 30.



DISTRICT NO. 3 — MUNICIPAL AND SANITARY
ENGINEERING.

The reservoirs, watermains, sewers, roads,
and oil pipe lines were maintained and ex-
tended, as required, to facilitate construction
work. Work was continued on the municipal
improvements in the city of Panama.

DISTRICT NO. 4 — ANCON QUARRY.
PERFORMANCE OF ROCK CRUSHER PLANT.

Hours.

Length of working day 1 2 :00

Avcr.ige number of hours per day (actual

working time) 8:87

Cu. Yds.
Average amount crushed per hour of working

d.,y 222.00

Average amount crushed per working hour... 300 36
Total output for the month 61,274.00

Relocation of Panama Railroad.

During the month 252,815 cubic yards of
material were excavated, making the total
excavation at the close of the month 5,762,375
cubic yards, and 252,815 cubic yards of ma-
terial were placed in embankment, making a
total of 11,126,946 cubic yards used for this
purpose.

For comparison with the work done by
steam shovels during the preceding month,
and during the corresponding month of the
previous year, the following table has been
prepared:



Period


Kxcava-
t.- i bv
shovels.


Classification of
material.


m

Zoo


(A

-v
b)
X

23

25

23


» >

•D O




Rock.


Earth.




1910:
1911:

hel>


Cu Yds.
214,411

251.175

256,615


Cu. Yds.
71,075

162.390
180,600


Cu. Yds.
143,336

88,785
76,015


7.91

6 00
6.22


1,179

1.675

1,795



During the month 1,070 feet of temporary
trestles were driven, and work on the bridges
and culverts was continued. No permanent
track was laid during the month, the total
of 70-pound and 90-pound permanent track
remaining at 157,744 linear feet and 18,997
linear feet respectively, as previously reported.
The total force averaged 2,210 men.
Quartermaster's Department.

Labor — The supply of skilled and unskilled
labor continued satisfactory during the month.

Materials and Supplies — The inventory of
the Panama railroad storehouse was com-
pleted. The value of the material taken over
by the Commission was $445,908.24 (P.R.R.
value). The value of obsolete and unser-
viceable material amounted to $20,534.73;
this material will be considered the property
of the Panama railroad. The figures given
are subject to correction after final check is
made. The greater portion of the stock from
the storehouse has been moved to the Mount
Hope depot.

The total value of material received by the
Commission during the month was §200,000
less than during the preceding month. The
value of material received for stock and the
value of material ordered from the United
States was likewise less. The value of the
material received was $583,849.95. Cargo
was brought to the Isthmus in 28 vessels, and
consisted of 460 separate shipments, approxi-
mately 60 per cent of which were handled
direct from dock to destination on the Isth-
mus, other than Mount Hope depot. The
total weight of cargo received, exclusive of
lumber, cross ties, and piling, aggregated
33,381 tons. Lumber was delivered in the
amount of 226,739 feet, board measure, and



28,505 cypress ties and 927 pieces of piling
were received.

Subsistence Department.

The operation of the European laborers'
messes, the colored laborers' kitchens and the
line hotels showed a net profit of $2,063.94.
The operation of the hotel Tivoli showed a net
profit of $8,594.77, and there was a net profit
on restaurants, penitentiary and dredges of
$253.17. The net profit on subsistence oper-
ations was $10,911.88.

Department of Civil Administration.
COURTS.

One criminal case was disposed of in the
Supreme Court of the Canal Zone; 22 civil
and 18 criminal cases in the Circuit Courts,
and 51 civil and 476 criminal cases in the
District Courts.

DIVISION OF POSTS, CUSTOMS AND REVENUES.

Money order sales for February amounted
to $445,086.97, and the fees to $1,945.99.
Receipts from stamp and card sales, and news-
paper postage aggregated $6,603.41. The
total collection of revenues made by the
division was $16,501.10, and the collection
on account of court fines, costs and fees,
$2,01929.

Twenty vessels entered at and 23 vessels
cleared from the port of Ancon; and 20 ves-
sels entered at and 22 vessels cleared from the
port of Cristobal.

DIVISION OF POLICE AND PRISONS.

The total number of persons arrested was
486, of whom 444 were men and 42 women.
Forty-five nationalities were represented. The
total number of arrests for the month was an
increase of 102, as compared with January.
Five convicts were committed to the peni-
tentiary, and 10 were discharged, leaving 139
in confinement at the close of the month.
The cost of guarding and subsisting the con-
victs was $2,373.55, and the value of their
work on the Canal Zone roads $1,884.20.

DIVISION OF FIRE PROTECTION.

Twenty-seven fires were reported in the
Canal Zone during the month, a decrease of
17, as compared with January. The damage
to Commission property was $290, and to
Panama railroad property $3,136.03.

DIVISION OF PUBLIC WORKS.

In the city of Panama the average daily
consumption of water was 1,266,165 gallons,
and in Colon 986,572 gallons.

The usual inpsection and maintenance work
of this division was performed during the
month.

DIVISION OF SCHOOLS.

The total enrolment in the white schools
during the month was 1,087 and the average
daily attendance 914.2, or 84 per cent of the
enrolment; and in the colored schools the
total enrolment was 1,293 and the average
daily attendance 611.9, or47 per cent. Forty
two white and 24 colored teachers were em-
ployed in the division on February 28.
Department of Sanitation.

The total number of deaths from all causes
among employes was 41. These were divided
as follows: From disease, 26, and from vio-
lence, 15, giving the annual average per
thousand of 6.27 and 3.61, respectively.

The annual average death rate per thousand
among employes for the month of February



in previous years since American occupation,

was as follows:

1905 14.05

1906 29.09

1907 30.74

1908 '. 12.80

1909 9.42

1910 8.75

The annual average death rate per thousand
in the cities of Panama, Colon, and the Canal
Zone, including both employes and nonem-
ployes, was 18.60.

The annual average death rate per thousand
for the month of February among the same
class of population for previous years, was
as follows:

1905 42.07

1906 43.96

1907 36.07

1908 21.40

1909 I 18.59

1910 17.50

Segregating the whites from the blacks, the
annual average death rate per thousand from
disease among employes was: For whites,
5.67; blacks, 6.47; giving a general average
of 6.27. For the same month during 1909,
the annual death rate per thousand from
disease was: Whites, 6.85; blacks, 6.97, giving
a general average of 6.93 ; and for the same
month during 1910, whites, 520; blacks, 4.59;
giving a general average of 4.73.

Among employes during February, 1911,
deaths from the principal diseases were as
follows: Chronic nephritis, 4; hemoglobinuric
fever, 1; organic disease of the heart, 3;
lobar pneumonia, 3; tuberculosis, 3; dysen-
tery, 2; leaving a balance of 10 deaths from
all other diseases, and 15 deaths from external
violence.

An epidemic of measles of a mild form has
existed on the Isthmus for several weeks.

No cases of yellow fever, small pox, or
plague were brought to or originated on the
Isthmus during the month.

Respectfully,
Geo. W. Goethals, Chairman.

OFFICIAL CIRCULARS.

Children's Names on Applications for Transpor-
tation.

Culebra, C. Z., March 17, 1911.
Circular No. 175-E:

In the future, in order to comply with the require-