Download or read book National Dam Inspection Program Beaver Dam NDI I D Number PA 00453 Pennder I D Number 65 7 Ohio River Basin Beaver Run Westmoreland County Pennsylvania Phase I Inspection Report written by GAI CONSULTANTS INC MONROEVILLE PA. and published by . This book was released on 1979 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beaver Dam is an earth embankment approximately 32 feet high and 385 feet long (including spillway). The dam is constructed with a masonry spillway located about 35 feet left of the right abutment. The crest of the spillway is 100 feet long and about 11 feet below the top of its wingwalls. Based on a visual inspection, operational history, and available engineering data, the dam is consisered to be in poor condition. The defunct facility has been essentially abandoned since 1952 and its reservoir is sediment filled. Results of the hydrologic and hydraulic analysis indicate that the facility is capable of passing and/or storing only 36 percent of the PMF without embankment overtopping. Structural deficiencies noted by the inspection team included substantial embankment overgrowth, an access road cut through the embankment near the left abutment, cracking of the masonry spillway wingwalls, and a sediment filled reservoir. Due to the seriously inadequate spillway and overall poor condition, the facility is considered unsafe but non-emergency as failure is not considered imminent.

Download or read book National Dam Inspection Program Beaver Run Dam NDI Number PA 484 Ohio River Basin Beaver Run Westmoreland County Pennsylvania Phase I Inspection Report written by GAI CONSULTANTS INC MONROEVILLE PA. and published by . This book was released on 1978 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on a visual examination, as well as available engineering data, the dam is considered to be in good condition. Hydrologic and hydraulic calculations indicate that the facility can pass and/or store the flow resulting from the PMF. Additional calculations, however, indicated that if not properly vented, the morning glory spillway may pass through a period when a make and break siphoning action would attend flow. This action would be accompanied by surges at the inlet and outlet ends and by thumping and vibrations within the outlet. Since no design reports are available for the appurtenances, it is not known if this condition was considered during the design. Discussions with owners representatives and local residents also indicated that remedial repair to the outlet works was required at least once and possibly twice since construction. Consequently, it is recommended that a detailed hydraulic and hydrologic analysis be performed to accurately assess the present condition of the outlet and to make any modifications deemed necessary to insure that the outlet will perform adequately under all possible operating conditions.

Download or read book National Program of Inspection of Dams written by United States. Army. Corps of Engineers and published by . This book was released on 1975 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Dam Inspection Program Beaver Lake Dam NDS I D Number PA 354 DER I D Number 41 10 Beaver Lake Enterprises Susquehanna River Basin Beaver Run Lycoming County Pennsylvania Phase I Inspection Report written by R. Jeffrey Kimball and published by . This book was released on 1979 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Beaver Lake Dam is an earthfill dam with a vertical concrete wall forming the upstream slope and a vertical stone wall forming the downstream slope. The material between the two walls is earth. The crest width is approximately 12 feet. The dam is 179 feet long and approximately 9 feet high. The dam crest is curved concaved in an upstream direction. The right abutment is very gently sloping. The spillway is located in the center of the dam and is 19 feet long. There are no outlet pipes or drain facilities in the dam.

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Download or read book Historical Analysis of the Beaver Run Reservoir Project written by Harold Lee Shawley and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Dam Inspection Program Gilkerson Dam NDI Number PA 01122 PennDER Number 65 8 Ohio River Basin Unnamed Tributary to Beaver Run Westmoreland County Pennsylvania written by BAKER (MICHAEL) JR INC BEAVER PA. and published by . This book was released on 1980 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gilkerson Dam is classified as a 'Small' size - 'High' hazard dam. The dam was found to be in very poor overall condition at the time of the inspection. Hydraulic/hydrologic evaluations, performed in accordance with procedures established by the Baltimore District, Corps of Engineers, for Phase I Inspection Reports, revealed that the spillway will pass approximately 40 percent of the Probable Maximum Flood (PMF) before overtopping will occur. A spillway design flood (SDF) in the range of the 1/2 Probable Maximum Flood (1/2 PMF) to the PMF is required for Gilkerson Dam. The 1/2 PMF was chosen because the dam is on the low and end of the 'Small' size category. Because the total duration and maximum depth of overtopping during the 1/2 PMF (1.5 hours and 0.21 foot, respectively) did not meet the estimated limiting criteria for failure of the dam (2 hours and 1.0 foot), the spillway is assessed as 'inadequate' but not 'seriously inadequate'. It is recommended that the owner immediately initiate an engineering study to develop recommendations for remedial measures to reduce the overtopping potential of the dam.

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