| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an installation structure for a data carrier whose size and type can freely be selected without being restricted by the lid body of a manhole and which can greatly reduce the attenuation phenomenon of an electromagnetic wave by metal and neither sinks nor tilts when loaded by a vehicle etc., from above, and an installing method for the data carrier. <P>SOLUTION: The data carrier 8 is buried in a buried layer 7 on the collar part 6 of a lid receiving frame 3 of a manhole main body 1. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
