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CHAPTER VI--Design --MECHANICAL AND ELECTRICAL--SPILLWAY

AND OUTLET WORKS

A. Intake Structures

20- by 50-foot spillway radial gates and hoist . . . . . . . . . . 141

(a) Requirement . . . . . . . . . . . . . . . . . . . . . . . 141

(b) General description . . . . . . . . . . . . . . . . . . . . 141

(c) Gate design . . . . . . . . . . . . . . . . . . . . . . . 146

(d) Radial gate hoist design . . . . . . . . . . . . . . . . . . 146

Trashracks for outlet and power intake structures . . . . . . . . 146

(a) Description . . . . . . . . . . . . . . . . . . . . . . . 146

(b) Construction . . . . . . . . . . . . . . . . . . . . . . . 147

19.67- by 28.03-foot fixed-wheel gates . . . . . . . . . . . . . 147

(a) Requirements . . . . . . . . . . . . . . . . . . . . . . 147

(b) General description . . . . . . . . . . . . . . . . . . . . 147

(c) Gate design . . . . . . . . . . . . . . . . . . . . . . . 147

Hoist and controls for the 19.67- by 28.03-foot fixed-wheel

gates. . . . . . . . . . . . . . . . . . . . . . . . 150

(a) Requirement . . . . . . . . . . . . . . . . . . . . . . . 150

(b) General description . . . . . . . . . . . . . . . . . . . . 150

(c) Design . . . . . . . . . . . . . . . . . . . . . . . . . . 150

B. Outlet Works

7.5- by 9.0-foot outlet gates . . . . . . . . . . . . . . . . . . 154

(a) Requirement . . . . . . . . . . . . . . . . . . . . . . . 154

(b) General description . . . . . . . . . . . . . . . . . . . . 154

(c) Design . . . . . . . . . . . . . . . . . . . . . . . . . . 154

96-inch ring-follower gates . . . . . . . . . . . . . . . . . . 156

(a) Requirement . . . . . . . . . . . . . . . . . . . . . . . . 156

(b) General description . . . . . . . . . . . . . . . . . . . . 156

(c) Design. - - - - - - 157

Controls for ring-follower and outlet gates . . . . . . . . . . . 157

(a) Requirement . . . . . . . . . . . . . . . . . . . . . . . 157

(b) General description . . . . . . . . . . . . . . . . . . . . 157

(c) Design . . . . . . . . . . . . . . . . . . . . . . . . . . 160

96-inch hollow-jet valves and controls . . . . . . . . . . . . . 160

(a) Requirements . . . . . . . . . . . . . . . . . . . . . . 160

(b) General description . . . . . . . . . . . . . . . . . . . . 160

(c) Valve and control unit design . . . . . . . . . . . . . . . . 1.63

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