Title:
MANHOLE AND ITS CONSTRUCTION METHOD
Document Type and Number:
Japanese Patent JP2006194033
Kind Code:
A
Abstract:
To provide a manhole which can easily be constructed and prevented from its float-up or sink-down due to ground liquefaction.
A counterweight 27 is provided at a manhole 2, and the gross unit volume weight of the manhole 2 and the counterweight 16 is set up to be 1.1 or more and 1.3 or less. A float-up prevention block 43 is installed on a vinyl chloride tube 3, and the gross unit volume weight of the vinyl chloride tube 3 in a predetermined length and the float-up prevention block 43 is set up to be 1.1 or more and 1.3 or less. By such an easy work execution, the manhole 2 and vinyl chloride tube 3 can securely be prevented from float-up or sink-down due to ground liquefaction.
Inventors:
FUKUMURO JUNYA
Application Number:
JP2005008887A
Publication Date:
July 27, 2006
Filing Date:
January 17, 2005
Export Citation:
Assignee:
TSURUMI CONCRETE KK
International Classes:
E02D29/12; E02D31/12; E03F5/02
Attorney, Agent or Firm:
樺澤 襄
Satoshi Kabazawa
Tetsuya Yamada
Satoshi Kabazawa
Tetsuya Yamada