| 摘要 |
PROBLEM TO BE SOLVED: To provide a beam mounting structure of a double floor, which facilitates construction thereof, and prevents deformation of a floor portion by deviation of the beam even if fastening state between a bolt and a nut is loosened by vibrations etc. SOLUTION: The double floor is formed of the beam 20 rigidly mounted on an upper portion of a leg connected to a post which is erected on a floor slab, and a floor panel 5 laid on the beam. The double floor is comprised of a stay 50 which has one end thereof fixed to the strut and the leg and the other end thereof fixed to the beam via a washer 30 by fastening the fixing bolt 40 and the nut 41. The beam has a recessed groove 23 formed therein along a longitudinal direction, into which a head 44 of the fixing bolt is only slidably inserted, and the washer has, formed thereon, a first engaging projection 31 biting into the beam and a second engaging projection 32 biting into the stay. COPYRIGHT: (C)2007,JPO&INPIT
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