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The minimum bearing required for floor joists resting on wood, when not supported by a ribbon strip, is 1-1/2 inches. This requirement reflects standard building practices aimed at ensuring adequate support for the joists, thereby promoting structural integrity and preventing potential issues such as sagging or failure over time.

In the context of wood construction, a bearing of 1-1/2 inches allows for a secure connection between the joist and the supporting structural element, ensuring that the joist can properly transfer loads to the walls or beams below. This minimum requirement is typically determined based on factors such as wood type, load conditions, and overall design standards outlined in the Florida Building Code.

Other options reflect greater bearing lengths, which may be applicable in different circumstances or specific building configurations, but the standard minimum for typical residential and light commercial construction as set by the code remains at 1-1/2 inches. Understanding this requirement is crucial for ensuring safety and compliance in construction practices.