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Clifford D. Craig - formerly Spring Hollow

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Clifford D. Craig - formerly Spring Hollow completed
Clifford D. Craig - formerly Spring Hollow completed

Particulars

Owner: Roanoke County

Designer: Hayes, Seay, Mattern, Mattern

Contractor: unknown

Statistics

Type: Gravity

Purpose(s): Water Supply

Reservoir capacity: 12 m3x106

Height: 74 metres

Length: 302 metres

Volume of RCC: 222 m3x103

Total volume: 223 m3x103

Construction Dates

Start of Project: 10/92 (October 1992)

Start of RCC: 03/93 (March 1993)

End of RCC: 08/93 (August 1993)

End of Project: /94 ( 1994)

Country: USA

River: off-stream

DMS Co-ordinates: 37˚13'52.01"N, 80˚10'33.98"W

DD Co-ordinates: 37.231113, -80.176109

Facings

Upstream

SlopeType
VerticalTraditional concrete against precast concrete panels with geomembrane

Downstream

SlopeType
0.80Unformed face of RCC

Spillway

SlopeType
none 

Placement

Layers (mm)Lifts (mm)
300300

Cementitious material

Cement (kg/m3)
53
Pozzolan (kg/m3)Pozzolan Type
53Low-lime flyash (ASTM Class F)