| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that a gap is produced in a pipe conduit between a design pipe conduit and an actually buried pipe conduit for the comparatively long range in the longitudinal direction of an obstacle in the conventional pipe arrangement method. <P>SOLUTION: In a piping method of a curved joint, an enlarged inner diameter at a main part is provided at a main part side so that the other pipe inserted from one end of the main part toward the main part side enables precession at the center of the opening end, and a by-pass approaching the obstacle located in the design pipe conduit is provided by combining a plurality of curved joints in which the main part is curved into an approximately dog leg shape. In the piping method for the curved joints, at least four curved joints are used to provide an approximately U-shape by-pass. At least a straight pipe is sandwiched between any curved joint and any curved joint. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
