Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/7623
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dc.contributor.authorSanchez, Jose E.-
dc.date.accessioned2016-05-06T14:33:41Z-
dc.date.available2016-05-06T14:33:41Z-
dc.date.issued2003-08-
dc.identifier.urihttp://hdl.handle.net/11681/7623-
dc.descriptionTechnical report-
dc.descriptionNavigation improvements are being investigated for several existing projects on the Monongahela River. A hydraulic model study was conducted to evaluate filling and emptying system design alternatives and flow conditions in the upper and lower approaches for the lock replacements at Locks and Dam #4. A 1:25-scale model was constructed to determine the range of lock performance for both locks. The proposed filling and emptying system for the locks is an In-Chamber Longitudinal Culvert Filling and Emptying System. The filling time for acceptable chamber performance with the 6.035-m (19.8-ft) lift was 8.3 min. This filling time was achieved with a 3.0-min valve. The emptying time for the same lift was 8.75 min, and it was achieved with a valve time between 1.0 and 2.0 min. Experiments were also performed to measure the surge created in the vicinity of the proposed downstream lock approach during emptying operations. Results showed that the water-surface elevation in the lower approach increased by 0.37 ft and occurred approximately 1.5 to 3.0 min into the emptying cycle.-
dc.publisherCoastal and Hydraulics Laboratory (U.S.)-
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relationhttp://acwc.sdp.sirsi.net/client/en_US/search/asset/1000711-
dc.relation.ispartofseriesERDC/CHL TR ; 03-7.-
dc.rightsApproved for public release; distribution is unlimited.-
dc.sourceThis Digital Resource was created from scans of the Print Resource-
dc.subjectHawser forces-
dc.subjectHydraulic models-
dc.subjectIn-Chamber Longitudinal Culvert Filling & Emptying System (ILCS)-
dc.subjectLock design-
dc.subjectLock replacement-
dc.subjectLocks and Dam #4-
dc.subjectMonongahela River-
dc.titleModel study of Monongahela Dam #4 lock replacements, Monongahela River, Pittsburgh, Pennsylvania: hydraulic model investigation-
dc.typeReporten_US
Appears in Collections:Technical Report

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