| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method in which a grating can be easily fixed to a ditch block used for a ditch etc., without using a reception frame. <P>SOLUTION: After a panel 8 is attached to one side of an opening part 2 so that a raising material 17 is mounted on a step 3 of a ditch block 1, the whole panel 8 is shifted together with the raising material 17 until the panel abuts against an opening part end so as to insert a projection piece 14a below a ceiling wall part 4. The raising material 17 is placed on the step 3 while another panel 7 is tilted, a bolt 18 is inserted into a bolt insertion hole 21 of a seat 13, and the projection piece 14a is run below the ceiling wall part. After the panel 8 is attached, a cap nut 22 is screwed to the bolt 18 projecting from the seat 13 to be fastened and fixed, thereby connecting both the panels 7, 8 to each other. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
