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Title:
CONSTRUCTION METHOD FOR UNITIZING AND PREFABRICATING PIPING AND BRANCH JOINT FOR USE THEREIN
Document Type and Number:
Japanese Patent JP3225017
Kind Code:
B2
Abstract:

PROBLEM TO BE SOLVED: To provide a piping unitizing and prefabricating construction method which facilitates safety measures such as the prevention of a drop accident from a floor penetrating sleeve and curing against flying and dropping objects by reducing the bore of the floor penetrating sleeve and to provide a branch joint suitable for use in the method.
SOLUTION: Flexible main piping 3 which is long enough to extend from under a floor slab to under the floor slab of the upper story are connected together by branch joints 1 such that the flow passage axis of the pipe connection of a branch pipe is held parallel to the flow passage axis of a joint main body, with a rib having an outwardly downwardly inclined upper surface and joined with each branch joint 1 from the upper end of the joint main body to the outer surface of the curved part of the branch pipe, to fabricate a piping unit U that extends across plural or all stories. The piping unit U is transported into a construction site together with a reel 8, and when floor slabs for the plural or all stories are constructed the line unit U is passed through a floor penetrating sleeve and hoisted upward as it is rewound from the reel 8, to perform piping work.


Inventors:
Okubo, Yasukazu
Application Number:
JP1998000025030
Publication Date:
November 05, 2001
Filing Date:
January 22, 1998
Export Citation:
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Assignee:
TAKENAKA KOMUTEN CO LTD
International Classes:
F16L1/00; F16L41/02; (IPC1-7): F16L1/00; F16L41/02
Attorney, Agent or Firm:
藤本 英夫