| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate an inconvenience hitherto existed in a design of a floor height in a procedure of the construction of a cable rack that uses a space above a maintenance passage. SOLUTION: In the maintenance passage 15 secured above a rack 24 constructed of a steel frame and the like, a wiring space is allocated to the side of an apparatus, and a rack unit 17, which includes a permeable and see- through reclosable lid 21 made of a grating or an expanded metal and disposes a hinge 20 composed of parallel master beams 18 and a sub beam 19 installed at the bottom at the side of the apparatus, is formed in the wiring space using a joint 22 that inserts the master beams into each other.</p> |
