What is the minimum bearing for structural support of wood on concrete?

The minimum bearing requirement for structural support of wood on concrete is 3 inches. This specification is crucial as it provides adequate support to the wood members, ensuring that they are properly anchored and supported to prevent potential structural failure, excessive deflection, or moisture-related damage over time.

When wood is placed directly on concrete, proper bearing is essential to distribute loads effectively. Insufficient bearing can lead to problems such as the wood absorbing moisture from the concrete, which could increase the risk of decay or insect infestation. By having a minimum of 3 inches of bearing, you help ensure a stable, durable connection that maintains the integrity of the structure. This guideline is also established in building codes to safeguard against structural deficiencies and to promote longevity in construction practices.