To shorten a construction period by simplifying a construction work at site and eliminate troublesome post construction works in a structure for electrical connection at the connection part of a precast concrete column when an electric path for a lightning conductor is secured in the structure.
This structure 1 for electrical connection at the connection part of a precast concrete column 2 connected to the upper and lower stories is constructed to form an electric path for a lightning conductor. The structure comprises a conductive sleeve 4 fitted to the lower part of the lightning conductor reinforcement 3 of the precast concrete column 2 on the upper story, the lightning conductor reinforcement 3 on the upper story and a sleeve connection member 5, a screw part formed in the upper part of the lightning conductor reinforcement 3 on the lower story exposed to the upper side out of the upper surface of the column on the lower story, and a nut 7 screwed to the screw part and brought into contact with the lower surface of the sleeve of the precast concrete column 2 on the constructed upper story when tightened. The lightning conductor reinforcement 3 and the nut on the lower story and the sleeve and the lightning conductor reinforcement 3 are electrically connected to each other by these components.
NAKAJIMA TAKAO
HATAKEYAMA TOMOYUKI
Kyoko Kawamura
Ken Kubo