PROBLEM TO BE SOLVED: To provide a step structure of a truss-rod attached deck floor making use of a truss-rod attached floor panel with high working efficiency by a simplified constitution.
SOLUTION: When a first floor panel 3 and a second floor panel 8 horizontally adjacent to each other after making a different height arrange so as to make both end sides 3c and 8c vertically coaxial, a first truss rod 4 and a second truss rod 9 form a clearance lap joint in a plan view. The lap length of the first truss rod 4 and the second truss rod 9 is made as a member length and the different height of the first truss rod 4 is made as a height to arrange a square-shaped reinforcing bar 16 between them, and a connecting bar equipped with a vertical member 14a having the member length for connecting the first upper end bar 5 and the first lower end bar 6 is placed to the ends of the first truss rod 4 and the second truss rod 9. Concrete 18 is placed to such a step 15 after subsidiary reinforcing bars 17 have been separately arranged so as to connect the second neighboring truss rods 9 to each other.
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