IEEE P1630/D4, November 2010由美国电气电子工程师学会 US-IEEE 发布于 2011-01-17,并于 2011-01-17 实施。
The purpose of this standard is to provide minimum design requirements for supporting structures types to provide support of overhead contact systems for electrified transit. This standard is developed to govern the design and fabrication of supporting structures for OCS. It is provided to define minimum general design and construction parameters for the following tubular steel pole types: tapered...
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