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Nickajack Auxillary Spillway

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Nickajack Auxillary Spillway completed
Nickajack Auxillary Spillway completed

Particulars

Owner: Tennessee Valley Authority

Designer: Vann A. Newell & Harry A. Mason

Contractor: TVA Construction Forces, GUMBK, Sequatchie Concrete Services Inc.

Statistics

Type: Gravity

Purpose(s): Hydropower

Reservoir capacity: 311 m3x106

Height: 17 metres

Length: 427 metres

Volume of RCC: 79 m3x103

Total volume: 79 m3x103

Construction Dates

Start of Project: 08/89 (August 1989)

Start of RCC: 07/90 (July 1990)

End of RCC: 02/91 (February 1991)

End of Project: 04/92 (April 1992)

Country: USA

River: Tennessee

DMS Co-ordinates: 35˚0'13.13"N, 85˚37'10.88"W

DD Co-ordinates: 35.003647, -85.619690

Facings

Upstream

SlopeType
0.25RCC against formwork  [stepped face]

Downstream

SlopeType
0.60RCC against formwork  [stepped face]

Spillway

SlopeType
0.60RCC against formwork  [stepped face]

Placement

Layers (mm)Lifts (mm)
300600

Cementitious material

Cement (kg/m3)
85
Pozzolan (kg/m3)Pozzolan Type
119Low-lime flyash (ASTM Class F)