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原文传递 Evaluation of Prefabricated Edge Drains (PED) in Ohio; Final rept

题名：	Evaluation of Prefabricated Edge Drains (PED) in Ohio; Final rept
作者：	Heydinger, A. G.; Chou, Y. J. E.; Riley, D. G.
关键词：	Highway engineering; Drains; Ohio; Design standards; Construction industry; Borescopes; Video signals
摘要：	An investigation was conducted to evaluate prefabricated edge drain (PED) construction procedures anbd to assess the condition of PED installed in Ohio between 1988 and 1993. The research included a survey of department of transportation engineers in other states and Ohio Department of Transportation (ODOT) design and construction engineers. The condition of PED installed in Ohio was evaluated at six sites throughout Ohio by excavating short sections of PED for visual inspections and permittivity testing. A video borescope with a 25-feet long fiber cable was used to investigate the in situ condition of the PED. Permittivity testing of the PED fabric was conducted in the field on PED samples removed from the excavations.
总页数：	128p
报告类型：	科技报告