Download or read book Performance of the St Marys River Ice Booms 1976 1977 written by Roscoe E. Perham and published by . This book was released on 1978 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance of the St Marys River Ice Booms 1976 1977 written by Roscoe E. Perham and published by . This book was released on 1978 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt: The ice booms on the St. Marys River at Sault Ste. Marie, Michigan and Ontario, were operated a second winter, 1976-77, under colder conditions, with less water flow, lower water levels, and 25% fewer ships in the river than during the previous year. The ice cover behind the booms remained frozen to shore for longer periods, and the loads registered in the booms were relatively unaffected by ship passages compared with the previous year's activity. As in the previous year, most structural load changes took place in the west ice boom and were due to movements of the ice cover immediately upstream of the boom. The cover broke free from shore on three occasions: the first and third occasions were minor events, but on the second occasion the cover cracked free, the timbers remained frozen to it, and the boom structure became damaged by the subsequent ice activity. Three anchor line assemblies broke over a period of about 4 hours; the two latter breaks occurred while a ship was operating in the ice. The first break was in an instrumented line and the measured load was unexpectedly low. The most important break was in the main shore anchor and this opened the boom. The maximum force at this anchor was estimated as less than 115 tons (1,023 kN). Some ice moved downstream without serious consequence and the boom was reconnected in two days. These events point out several factors to be considered in ice booms, such as designing the booms to withstand the action of the solid ice cover as well as the fragmented ice cover, keeping the structures and their assembly simple, and inspecting components and assemblies carefully. (Author).

Download or read book The Effectiveness and Influences of the Navigation Ice Booms on the St Marys River written by Roscoe E. Perham and published by . This book was released on 1984 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book River Ice Jams written by S. Beltaos and published by Water Resources Publication. This book was released on 1995 with total page 402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Great Lakes Ice written by and published by . This book was released on 1980 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book St Marys River Ice Booms written by Roscoe E. Perham and published by . This book was released on 1976 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CRREL Technical Publications written by Cold Regions Research and Engineering Laboratory (U.S.) and published by . This book was released on 1981 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report on the St Marys River Ice Boom and Its Effects on Levels and Flows in the Soo Harbor Area Winter of 1978 79 written by and published by . This book was released on 1979 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CRREL Report written by and published by . This book was released on 1986 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Winter Navigation on the Great Lakes written by James L. Wuebben and published by DIANE Publishing. This book was released on 1995 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book River and Lake Ice Engineering written by George D. Ashton and published by Water Resources Publication. This book was released on 1986 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Videomonitoring Performance of the St Marys River Ice Islands and Ice Boom written by Andrew M. Tuthill and published by . This book was released on 2002 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Abstract Bulletin written by and published by . This book was released on with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Resources Development in Michigan 1977 written by United States. Army. Corps of Engineers and published by . This book was released on 1977 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydraulic Model Study of Port Huron Ice Control Structure written by Darryl J. Calkins and published by . This book was released on 1982 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1979 with total page 944 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effectiveness and Influence of the Navigation Ice Booms on the St Mary s River written by Cold Regions Research and Engineering Laboratory (U.S.) and published by . This book was released on 1984 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: