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rs -w. - - -. _ .. - - �
<br /> RCC. . .
<br /> Knudsen Engineers, Denver, Colo., the dam by conveyor. -Layers were
<br /> to 95% maximum modified Proctor to protect some facilities from spread with the aid of either a front-
<br /> density. flooding and also to store process end loader or small dozer and corn-
<br /> water. patted by a vibratory roller.
<br /> The RCC for the North Loop The Middle Fork Dam has a crest
<br /> project was blended in a pug mill set length of 410 feet and width of 16
<br /> up near the dams. The mix included feet and will impound 390 acre-feet ix design for the RCC was
<br /> 200 pounds of cement, 3,390 pounds of water when filled. It has a facing 7 1,316 pounds of 4-inch-minus
<br /> aggregate and 80 pounds fly ash per of conventional concrete over both and 1,974 pounds of 1-inch-minus
<br /> cubic yard with 6071) water. its vertical upstream face and oil shale aggregates, 120 pounds of
<br /> steeply-sloped downstream surface. portland cement and 180 pounds of
<br /> Another interesting project was Some 55,000 cubic yards of RCC water. Design strength of the RCC
<br /> the Middle Fork Creek Dam at Ex- was placed for the gravity structure was 1,650 psi in 90 days.
<br /> xon Co., U.S.A.'s Colony Oil Shale in just six weeks. Middle Fork Dam was the second
<br /> Project in Parachute, Colo. It was The RCC used for the bulk of the in the United States to make full-
<br /> completed in late 1984 by Avery dam, consisted of a zero-slump scale use of RCC. It was the first in
<br /> Structures, Inc., Buena Vista, Colo. mass concrete with a low cement the country to employ maristone oil
<br /> The dual-purpose, 124-foot-high content mixed in a regular concrete shale as the concrete aggregate.
<br /> dam was designed by Morrison- production plant and delivered to continued
<br /> ROLLER COMPACTED CONCRETE GRAVITY DAMS
<br /> Max. Quantity Cement/ Cost Constr.
<br /> Prolect Ht. Cu.yd. Application Cn.yd. yd' Period
<br /> 1. Willow Creek Dam— Heppuer, Ore. 169' 433,00 Concrete gravity dam WI 1181 aver 519.00 1982
<br /> Owner!Engr: COfE,Walla, Walla, wash. 152 ml Precast Concrete panel
<br /> Contr: Eucon Corp.Tri Cities.Wash. vertical upstream face
<br /> 2. North Loop Detention Dams— 32' 20,670 2 Concrete gravity dams on 2001 526.00 1984
<br /> Austin, Tee. (10.ml downstream side of earth 801 FA
<br /> Owner: Trammell Crow Co.. Austin, Tex. embankment
<br /> Engr: Freese&Nichols. Inc.. Ft.worth, Tex.
<br /> Contr: H.B. Zachry Co., San Antonio, Tex.
<br /> 3. Winchester Dam—Winchester, Ky. 70' 32,000 Concrete gravity dam w/ 1751 532.50 1984
<br /> Owner:Winchester Municipal Utilities . 121 ml membrane lined precast
<br /> Engr: Parrott, Ely, & Hurt. Lexington, Ky. concrete panels upstream
<br /> & Palmer Engrg. Co..Winchester. Ky. -
<br /> COntr: McCormick Contractors,Winchester, Ky.
<br /> 4. Middle Fork Dam— Parachute,Colo. 124' 55,000 Concrete gravity dam with 1201 less than 1984
<br /> Owner: Exxon CO. USA, Houston, Tex. 138 ml conventional concrete both 525.00
<br /> Engr: Morrison-Knudsen Engrs., Denver, Col. faces
<br /> (was international Engineering Co.)
<br /> Contr: Avery Structures. Inc.,
<br /> Buena Vista, Cold.
<br /> S. Great Hills Dam—Austin,Tex. 37' 13,000 Concrete gravity dams on 2464 — '84-'85
<br /> Owner: Trammell Crow Co., Austin, Tex. 111 ml both sides of roadway 984 FA
<br /> Engr: Camp, Dresser, r. McKee, Austin, Tex. embankment
<br /> Contr: M.B. Zachry Co., San Antonio, Tel.
<br /> 6. Galesville Dam—Azalea, Ore. 167' 223,000 Concrete gravity dam wI 911 521.42'
<br /> Owner: Douglas County, Roseburg. Ore. 1511 conventional conc. upstream 874 aver. 1985
<br /> Engr: Morrison-Knudsen Engrs., San Fran., Calif. unformed downstream aver.
<br /> Contr: venture Const. Inc., Auburn, Wash.
<br /> 7. upper Stillwater Darn — Durham, Utah 285' 1,357,000 Concrete gravity dam wl 1291 23.81 '85-'86
<br /> OwnerlEngr: USER, Denver,Colo. 187 ml slipformed concrete both 2891 FA
<br /> Contr: Tyger Const. Co..Spartanburg.S.C. faces
<br /> 8. Monksvllie Dam—Ringwood,NJ. 150' 289,000 Concrete gravity dam WI 1081 greater than 1986
<br /> Engr:O'Brien 3 Gere, Blue Bell, Pa. 145 ml convention concrete both $16.52
<br /> Owner: No.Jersey 01st. Water Supply faces prig Did
<br /> Comm& Hackensack Water Co..
<br /> Hackensack, N.J.
<br /> Contr:S.J. Groves Co., Minneapolis, Minn.
<br /> 'plus 56.75Icu.yd. for 16--I aggregate Dy previous road relocation contractor
<br /> 18 Atpvtt 1, 1985—Construction Digest
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