Maritime History of the Great Lakes

Marine Review (Cleveland, OH), April 1913, p. 122

The following text may have been generated by Optical Character Recognition, with varying degrees of accuracy. Reader beware!

122 if La 2 alee ada ------ po hare ---- 108 = THE MARINE REVIEW ale 21s! -- 1 7, FEL. LEI CP LL IRL TOLLED VR ALD AA LOOP LASS AO? Rote -- >» tia ae i x H . . : © Sede QF 2 esa OFFICE rt-4 peel p 1 [BS peas | |p2 ------» --4 sce oo 8 OO FoR: SH, Ea Q C 5 t FT Lg bj! Hea Ty! Re peated eS ' | 2 | a x ; ' ' Ws Zit 0 eS SS 5 FH 7 OB} r Ww ie < | [Po tf F f i }@ 1s eee Kae ue -t ' 1 Hg rr 4 ce b> oO x E> SESE So os 8} ro | 0 2) y & E | yo Q oe ; ea i. e OHH dt lB 4 See ie oO fz > = Ps, et i 7 "Tp = 'oy ' x ; N TR 5 Ze x yeh. | zt Sot oF = \ > QO z CER % @ eee | [ee Ge Khe <2 * 21 AL. | Poa Mic cas SQ8 est Be! a rd A x o ' eae ' ps eer 318) 8 Z xy ¥5 nee eis a) U y s hI 3 Scion 'oil i is \ ; 3 Roe QO eet pel or 7~4t---- /40' -------» el Lo 2 Lal |i Oi G0 OO a4 | F s=2 3} & : 33 H10' le BIT b ; U eee ? 9 d t | 5 : ee eae ee fe | i | pee ey ate o | Cot ER otal rs faa ee ATE IT oa i! {ea i ree I 9 tee - soans wave fp 1 FOR Sod {| POWER, STATION c = OES s f, s TRS ST RST TRS TORS ERSTRSTIRSTT. UPSTREAM_END ELEVATION FIG. 5---PLAN AND SECTION OF DRY DOCK AND LOCK power house is a concrete monolith and is designed to contain 30 vertical, special Francis type turbo-generator units of 10,000 normal horsepower. Only 15 units are being installed at the present time; the remainder will be added as the demand for power increases. Eight of the turbines were furnished by the I. P. Morris Co., Philadelphia, and seven by the Well- man-Seaver-Morgan Co., Cleveland. The generators, which are designed for a normal output of 7,500 kilowatts each, at 11,000 volts, three phase, were all built by the General Electric Co. _ The dam forms a pool 60 miles long above Keokuk and will flood about 3,000 acres of land, about 65 per cent of which is on the Iowa side and 35 per cent on the Illinois side. Prac- tically all of this land was purchased from the owners by private negotia- tion, over 800 persons being involved. In only about half a dozen cases was it necessary to institute condemna- tion proceedings. 'In addition. to the features men- tioned, the power company is con- structing a concrete ice fender, 2,325 ft. long, to protect the forebay in winter and is building a seawall, 1,110 it. im leneth >and from 45 to.-73- ft. high, to protect the tracks of the Chicago, Burlington & Quincy rail- road along the Iowa shore, from high water. The dam will create a quiet lake with a minimum depth of 8 ft., extending 60 miles up the river above Keokuk. Twenty-five miles of macad- am highway are being constructed around the lower end of the lake by the power company. Since the plant is being built in a navigable stream, all the plans must be approved by the chief of engineers of the war depart- ment. One reason for the unusual massiveness of everything connected with the dam and power plant is found in the low head available, which necessitates the employment of large units to obtain the requisite power. All the work is handled by direct administration, none of it having been let to contractors. About 2,500 men are employed. When the plant is completed and delivering power to consumers it will represent a_ total cost of approximately $22,000,000, on which the depreciation, interest and taxes, will be close to $2,860,000 a year. fixed charges, including A plan and elevation of the lock and dry dock with their appurtenances is given in Fig. 5, while Fig. 6 shows a general view of the lock chamber looking up-stream from the lower gates. As mentioned above, the lock has a net width of 110 ft. and a minimum length inside of 400 ft. Its. length outside is 608 ft: 6. in., and the over all width is 176 ft. Ordinary steel miter gates are installed at the lower end, but the upper gates are of the buoyancy type with many interesting details to make them fool-proof. The lock is located adjoining the south of the lower end of the powét house between the latter and the Keo- kuk shore line. The first work in its construction was excavating the rivet bed and for this purpose an immense cofferdam, which also includes a pow er house, was constructed. It covets about 35 acres and is composed of 16 x 24-foot timber cribs which = tend about 15 feet above the rivet

Powered by / Alimenté par VITA Toolkit
Privacy Policy