| 摘要 |
A structural cap fastens along its opposite side edges to the seam structure joining a generally channel-shaped structural panel to adjacent similar panels to form a four-sided, closed, generally tubular, composite structure that has considerably greater load-bearing strength than the connected panel alone. Where temperature differentials between the inside and outside are a factor a body of heat insulation is provided in the closed space as well as heat insulation between the fastening side edges of the cap and the connecting seam structures. Each structural cap is preferably made as a one-piece body of sheet metal that is shaped to have an intermediate cover portion that overlays the bottom of the panel and side edge portions on opposite sides of the cover portion including sidewall sections that recess the cover portion inwardly of the outside of the panel and reinforce the sidewalls of the panel and a generally channel-shaped section that cups over to cover the seam structure joining two of the panels side by side as well as the side edge portion of the next adjacent cap. A terminal fastening section of the cap is folded back under and against the inner face of the next adjacent similar cap to form a longitudinally continuous connecting seam for the cap.
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