| 摘要 |
A cross-brace for a pair of joists has inclined brace members extending in vertical X-shaped array and a horizontal member rigidly connecting outer ends of two of the brace members and forming a horizontal strut between the outer ends. The cross-brace has flat lateral extremities, with flat vertical laterally outermostsurfaces, for surface-to-surface abutment with opposed sides of the joists, the flat lateral extremities allowing the cross-brace to be entirely accommodated betweenthe opposed sides of the joists.
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