Details Of Item Above. Cost Of Roosevelt Dam

Main contract, not final as some claims had not been adjusted..

$1,691,103.87

Cement.........

78.7,336.43

Engineering....

31,501.56

Inspection..............

43,426.77

Miscellaneous labor and material.................

26,200.23

Laboratory-tests of cement and concrete.................

1,921.53

Shop charges............

629.54

Sand crushing plant and operation..............

65,313.81

Sand quarry..........

71,298.28

Loss on power....

58,310.78

Pilasters and capstone, architectural treatment of top of dam...

7,478.60

Sprinkling system - labor $554.33, material $ 509.64...............

1,063.97

Lights for dam, labor $1166.25, material $3491.62.............

4,658.18

Bridge railing, etc..............

1,841.02

Gate and tool of dam, damage from flood over dam at elevation 90

14,340.01

Repairs at toe of dam, damage from flood over dam at elevation 90

i5,579.64

Indemnity claims.............

2,045.25

Superintendence.........

17,709.16

Propotion of camp maintenance..........

64,891.31

Proportion of Washington office and other overhead charges....

219,772.02

$3,126,430.96

For further information regarding Roosevelt dam see pages 38, 69, 81, 88, 89, 104, 114, 139, 147, 160, 172, 206-210, 222, 223.

Partial List Of Existing Dams With Descriptions An images/ConstructionOfMasonryDams 39

Weir at each end; contains 342,000 cu. yd. (facing page 246).

Pathfinder Dam

(See Figs. 52 And 53).

Following are the quantities of the principal items of work as given in the specifications also the prices at which the contract was let.

Masonry above elevation 5660, 50,000 cu. yd. at $7.60. ...........

$380,000

Masonry below elevation 5660, 3000 cu. yd. at $9.95...

29,850

Excavation, class 1, 2500 cu. yd. at $2.50.........................

6,250

Excavation, class 2, 500 cu. yd. at $6.70.........................

3,350

Excavation, class 3, 2500 cu. yd. at $4.30............

10,750

Concrete. 1000 cu. yd. at $7.60....

7,600

Hauling cement, 40,000 barrels at $3.23..........................

129,200

The Reclamation Service furnished the cement at Caspar, Wyoming, 45 miles from the dam.

Before the work was started a tunnel 10 ft. wide X 13 ft. high, 480 ft. long was driven around one end of the dam. (For a description of the gates installed in this tunnel see Engineering News for January 2, 1908.) A rock-fill temporary dam diverted the flow of the river through the tunnel. Leakage through the rock-fill dam was intercepted by sand bag dams and conducted across the excavation in a small wooden flume. The deepest point in the excavation was 21 ft. below mean low water or 14 ft. below the river bed. The total masonry in the dam as per the final estimate was 60,210 cu. yd., an increase of about 7000 cu. yd. over the preliminary estimate. Undoubtedly this involved an increase in some of the excavation items, and an increase in the item of cement to about 5600 barrels.

The Eleventh Annual Report of the U. S. Reclamation Service gives the following as the cost of the works as follows:

Pathfinder dam, including main contract, cost of cement, etc.....

$892,514.98

Buildings, gate-keepers house, emergency gate house, and store house....

19,252.57

Pathfinder tunnels (contract price for 480 lin. ft. of tunnel and of shaft excavation was $33,295.75)..........................

199,669.21

High-pressure gates...........................................

$191,098.97

Much of the stone for the dam was quarried from the spillway channel distant 300 ft. from the north end of the dam. Ten guy derricks were used on the work, six in the quarry and four on the dam. One 15-ton and one 10-ton cableway of 350-ft. span delivered materials. Four boilers aggregating 200 h.p. furnished power for all of the work. The maximum progress on masonry was during August, 1908 when 5040 cu. yd. were laid, or an average of 168 cu. yd. per day. This quantity would have been much larger but for the small working area.

Pathfinder dam, Wyoming; built 1905 to 1909.

Fig. 52. Pathfinder dam, Wyoming; built 1905 to 1909; granite rubble, masonry length 342 ft.; max. height 218 ft.; contains 60,210 cu. yd.

Shoshone Dam

(Fig. 53).

Includes also:

Spillway tunnel 20 ft. square in section X 500 ft. long.

Outlet tunnel at stream level 10 ft. square in section X 500 ft. long. Three gates each 3 ft. X 7 ft. clear opening operated by pumping oil into cylinders.

Second outlet tunnel, not contemplated in original contract, no ft. above stream, 80 sq. ft. in section X 300 ft. long. Let by contract at the following prices.

Shoshone Dam.

Shoshone Dam.

Fig. 53. Section of Shoshone dam, Arch Wyoming; built 1903 to 1910; rubble concrete masonry; length 200 ft.; max. height 328 ft.; contains 75,534 cu. yd.

Temporary works, crib dam 12 ft. X 200 ft., flume 9 ft. X 13 ft. X 1300 ft,

$37,000

Excavation, class 1, 32,000 cu. yd. at $1.60...

51,200

Excavation, class 2, 32,3000 cu. yd. at $2.50...

7,500

Excavation, class 3, 1,000 cu. yd. at $3.50...

3,500

Excavation, class 4, 6,000 cu. yd. at $2.00...

12,000

Excavation in spillway (open cut), 28,000 cu. yd. at $1.95...........

54,600

Excavation in spillway (tunnel), 7000 cu. yd. at $5.50...

38,500

Excavation road tunnel 150 lin. ft. at $26,000.....

3,900

Excavation outlet tunnel 10 ft. X 10 ft., 480 lin. ft. at $36.00.......

17,280

Concrete in base of dam, 19,000 cu. yd. at $4.75.........

90,250

Concrete above base of dam, 50,000 cu. yd. at $4.00.......

200,000

Total............

$515,730

The United States furnished the cement at Cody, 8 miles from dam.

Cost per bbl.

Office salaries, superintendent, chemist, etc................

.. $0.049

Operating labor.........

...0.292

Maintenance labor.....................................

.. 0.055

Maintenance material.........

.. 0.085

Clay digging..........................................

.. 0.054

Clay hauling........

...0.078

Limestone quarry............

0.121

Supplies............

...0.051

Fuel wood for drying clay.........

....0.067

Fuel oil...............................................

...0.922

Power...........

....0.122

Depreciation about...........

...0.80

Total.............................................

$2.696

Vyrny Dam

(Fig. 57).

Cost as follows:

Boring and preliminary...........

$34,600

Excavation 220,820 cu. yd. and refill 79,500 cu. yd.........

287,000

Puddle wall, including excavation...........

16,800

Masonary and brick-work..............

2,532,000

Regulating works...........

46,000

Basin and other work below dam.................

40,000

Total.....................

$2,957,000

Seven steam cranes employed on dam, each with engineer and eighteen men laid on an average 40 cu. yd. per day. Double-track, 3-ft. gage railroad between dam and quarry, 1 mile. System of drains in the foundation.

Vyrny dam, Wales.

Fig. 57. Vyrny dam, Wales; built 1882 to 1880; cyclopcan rubble masonry; length 1350 ft.; max. height 136 ft.; contains 260,000 cu. yd.