| 摘要 |
PROBLEM TO BE SOLVED: To increase the construction accuracy of a joint placement part of a concrete slab. SOLUTION: This support device 100 supporting the joint placement part of the concrete slab comprises a screw bolt 104 having a spiral groove formed at one end thereof over a specified distance so that the depth of threading can be adjusted, a C-shape steel 101 threaded to the groove and supporting a concrete during placing on a support surface having a support position in the axial direction of the screw bolt 104 adjusted by the groove, and a reception metal fitting 103 fixing the other end of the screw bolt 104. COPYRIGHT: (C)2005,JPO&NCIPI
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