Navigation Lock for McNary Dam, Columbia River, Oregon and Washington; Hydraulic Model Investigations.
ARMY ENGINEER DIV NORTH PACIFIC BONNEVILLE OREG DIV OF HYDRAULIC LAB
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The general purpose of the model studies of the McNary navigation lock was to provide hydraulic information and data for the development of an efficient and economical design for the lock hydraulic system. Investigation of the problems involved in the study of the lock hydraulic system indicated that two models would be required for complete model analysis a comprehensive model of the entire lock and hydraulic system constructed to a model-to-prototype scale ratio of 125 called the lock model and a sectional model built to a scale of 120 designated the valve model to isolate and study the lock tainter valves. The occurrence of negative pressures downstream from and adjacent to the tainter valves was the subject of a vacuum-tank study at the Waterways Experiment Station. These tests were conducted on a tainter valve of the same scale ratio used in the valve model.
- Civil Engineering