| 摘要 |
PROBLEM TO BE SOLVED: To easily install a leg part to a proper position in one operation even a span is great. SOLUTION: In this piping unit which is provided with a long pipe-frame for supporting a piping and leg parts 5b projected downward from the pipe- frame so as to be installed to piers, and in which plural leg parts 5b are arranged in the longitudinal direction of the pipe-frame, at least one of the leg parts 5b positioned inside both ends, out of the plural leg parts, is installed so that it can expand vertically in relation to the pipe-frame. Thus, the leg part 5b positioned inward is lengthened downward from the pipe-frame to be allowed to abut on the pier 2b and to be installed faster than the leg parts positioned on both sides.
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