| 摘要 |
PROBLEM TO BE SOLVED: To provide a crane installing method capable of assembling and installing a crane by coupling together constituent members on the roof even in the case inter-building space is narrow, the roof does not have a sufficient strength, etc. SOLUTION: Blocks 2 to constitute base are carried by an elevator, etc., onto a roof and coupled together linearly or intersecting perpendicularly so that a lattice-form base 1 having an appropriate spacing is formed and laid. Constituent members obtained by disassembling a crane 13 having a comparatively small rated load are carried by elevator, etc., onto the roof, and coupled together on the roof and the assembled crane 13 is installed on the base 1. Constituent members obtained by disassembling a crane 14 having a comparatively large rated load are lifted by the crane 13 onto the roof along the external wall surface of the building and transported and coupled together on the roof and the assembled crane 14 is installed on the base 1.
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