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Alan Henry Spillway

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Alan Henry Spillway completed
Alan Henry Spillway completed

Particulars

Owner: Brazos River Authority

Designer: Freese & Nichols

Contractor: Granite Construction Co.

Statistics

Type: Gravity

Purpose(s): Water Supply

Reservoir capacity: 140 m3x106

Height: 25 metres

Length: 84 metres

Volume of RCC: 22 m3x103

Total volume: 23 m3x103

Construction Dates

Start of Project: 03/91 (March 1991)

Start of RCC: 12/91 (December 1991)

End of RCC: 04/92 (April 1992)

End of Project: /93 ( 1993)

Country: USA

River: Double Mountain Fork

DMS Co-ordinates: 33˚3'47.33"N, 101˚2'48.75"W

DD Co-ordinates: 33.063148, -101.046875

Facings

Upstream

SlopeType
VerticalReinforced concrete cast against precast units or slip-formed facing elements

Downstream

SlopeType
1.10Unformed face of RCC

Spillway

SlopeType
ogeeTraditional concrete against formwork

Placement

Layers (mm)Lifts (mm)
300300

Cementitious material

Cement (kg/m3)
119
Pozzolan (kg/m3)Pozzolan Type
59Low-lime flyash (ASTM Class F)