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Middle Fork Dam

   
Details
Location:

USA

State:

Colorado

Client:

Exxon Company

Highlights:

ASI's first RCC dam

Oil shale (Marlstone) aggregate

Project Overview

As ASI's first RCC dam, and the second in the United States, the project involved constructing a new RCC dam on a previously excavated earthfill dam foundation. Other features of the project included constructing a temporary 50 foot high (15.24 m) sheet pile wall staging platform; foundation preparation; construction of a multilevel intake tower and associated outlet works; and placement of the RCC dam. ASI designed, proposed, and built a stepped downstream face, which has since been frequently used in many RCC dam designs.

Technical Details:

Type of Dam: RCC, gravity
Height: 124 feet; 40 m
Crest Length: 500 feet; 150 m
RCC Volume: 50,000 cy; 38,000 m3
Conventional Concrete: 7,600 cy; 5,800 m3

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