Part 59 (1/2)

Estimated proportionate charge for installing plant and holidays $0.28 ----- Grand total $1.66

Installing Plant.

Total.

Foreman 15-4/9 days $4.00 $61.78 Sub-foreman 1 day 3.00 3.00 Engineer 8-4/9 days 3.00 25.33 Carpenter 3 days 2.67 8.00 Watchman 42 days 2.00 84.00 Laborers 17-4/9 days 2.25 38.36 Laborers 149-8/9 days 2.00 299.78 Double team 10 days 5.00 52.50 Single team 6 days 2.00 12.00 Single team 1 day 3.50 3.50 Teaming (total) 53.00 Derrick and engine. 11-4/9 days 3.75 49.92 Rails and cars 8-2/9 days 0.40 3.29 Broken stone 7.05 tons 1.35 9.52 Egg coal .6 ton 6.25 3.75 Kerosene 30 gal. 0.11 3.30 Oil 4 gal. 0.25 1.00 Spikes 220 lbs. 0.05 11.00 ------- Total $723.03

The cost of the concrete work in the lower and upper layers can be still further detailed as shown below:

Lower Layer Concrete.

95.5 cu. yds., 1-2-6 concrete.

Materials: Rate. Per cu. yd.

Atlas cement 1.11 bbl. $1.35 $1.50 Sand .39 cu. yd. 1.10 0.43 Broken stone (.97 cu. yd.) 1.23 tons 1.35 1.66 Miscellaneous, plant, coal, etc. 1.28

Labor: Mixing and placing$2.09 Carpenter work on forms at $24.00 per M. .34 ----- Total per cu. yd. in place $7.30

Upper Layer Concrete.

129.2 cu. yds., 1-1-1-4 concrete.

Materials: Rate. Per cu. yd.

Atlas cement 1.37 bbl. $1.35 $1.85 Sand .24 cu. yd. 1.10 0.26 Stone dust (.25 cu. yd.) .32 ton 1.50 0.48 Broken stone (.75 cu. yd.) .96 ton 1.35 1.30 Lumber 0.31 M. ft. 21.00 0.65 Miscellaneous, plant, etc. 1.32

Labor: Mixing and placing 1.85 Carpenter work on forms at $21.00 per M. 0.66 ----- Total per cu. yd. in place $8.37

The following approximate labor costs are also given: Transporting, erecting and removing derrick, $260.85. Equivalent time: Foreman, 6 days; engineer, 4 days; laborer, 85 days.

Transporting, laying and removing track, $125.03. Equivalent time: Foreman, 4 days; laborer, 40 days.

Caring for dump and disposing of surplus by rough grading, $70.28.

Equivalent time: Foreman, 1 day; laborer, 33 days.

The total cost of the work was $3,503.66, divided up as follows:

Excavation $ 480.79 Lower layer concrete 614.15 Upper layer concrete 937.94 Back plaster 84.73 Surfacing 186.04 Asphalting 170.94 Back filling 103.27 Installing plant 716.03 Transportation and holidays 209.77 --------- Grand total $3,503.66

~LINING JEROME PARK RESERVOIR.~--The bottom of the reservoir that was lined covered 250 acres, and the concrete lining was 6 ins. thick. The lining was laid in alternate strips 16 ft. wide between forms set to grade. The concrete was mixed in 18 Ransome mixers provided with charging hoppers and mounted on trucks without boilers. Steam was supplied to the mixer engines from the boilers of the contractor's locomotives. One locomotive supplied steam for three or four mixers.

Tracks were laid in parallel lines across the reservoir bottom from 150 to 200 ft. apart. Sand and stone were hauled in on these tracks. The sand was dumped in stock piles at intervals; the stone was shoveled from the cars directly into the charging hopper and the sand was delivered by wheelbarrows to the same hopper. Four men shoveled the stone for each mixer. To deliver the concrete from the mixer to the work required six men with wheelbarrows. Two men leveled off the concrete discharged by the barrows and two other men floated the surface by means of a straight-edge spanning the 16-ft. strips and riding on the forms. By using a wet but not sloppy concrete and moving the straight-edge back and forth a good surface was secured. The gang mixing and placing consisted of 20 men for each mixer and 18 gangs laid approximately 1 acres per 10-hour day. The gang organization and wages were as follows:

Item. Per 10 hours.

4 men shoveling stone at $1.50 $ 6.00 2 men wheeling sand at $1.50 3.00 2 men delivering cement at $1.50 3.00 1 man dumping mixer at $1.50 1.50 1 man tending engine and water at $1.50 1.50 6 men wheeling concrete at $1.50 9.00 2 men spreading concrete at $1.50 3.00 2 men leveling concrete at $1.50 3.00 1 foreman 3.00 ------ Total per day $33.00

These costs do not include the fraction of a day's labor for fireman or the cost of fuel.

~RESERVOIR FLOOR, CANTON, ILL.~--The following costs are given by Mr. G.

W. Chandler for lining the bottom of a 16080-ft. reservoir with corners of 20-ft. radius and vertical brick sidewalls. A 1-3-7 crushed stone concrete was used; it was mixed by hand in batches of 2.7 cu. ft.

cement, 9 cu. ft. sand and 20 cu. ft. stone. The sand and stone were measured separately, the sand and cement mixed dry, then shoveled into a pile with the rock, well wetted, shoveled over again and then shoveled into wheelbarrows. The stone had 40 per cent. voids and the sand 30 per cent. voids. The lining was 10 ins. thick including a -in. coat of 1-2 mortar spread and worked smooth with a trowel. The cost per cubic yard of the lining in place was as follows:

0.856 bbl. cement at $2.50 $2.14 10.1 bu. sand (100 lbs. per bu.) at 5 cts 0.58 0.857 cu-yd-stone at $2.17 1.86 Labor, mixing and placing at 19 cts. per hr. 0.80 ----- Total $5.38

~RESERVOIR FLOOR, PITTSBURG, PA.~--The following methods and costs of laying a reservoir floor are given by Mr. Emile Low, M. Am. Soc. C. E., for the Hiland Reservoir constructed at Pittsburg, Pa., in 1884, by contract. There were 7,681 cu. yds. of concrete in the floor which was 5 ins. thick and laid on a clay puddle foundation.