| 摘要 |
<P>PROBLEM TO BE SOLVED: To concretely provide an industrially-valuable grating using high-tensile steel. Ž<P>SOLUTION: An end bar 3 is formed of a vertical portion 3a which is formed of a high-tensile steel plate and joined to both ends of a bearing bar 1 by applying plastic processing to the high-tensile steel plate, a receiving portion 3b which continues to a lower end of the vertical portion 3a and receives lower sides of both the ends, and a supporting portion 3c which is elongated perpendicularly in the opposite direction of the receiving portion 3b from an upper end of the vertical portion 3a. A load F on the bearing bar 1 can be borne to the receiving portion 3b and the supporting portion 3c. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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