What is the maximum span of a #2 douglas fir triple 2x12 girder located in the interior wall of a two-story home?

The maximum span of a #2 Douglas fir triple 2x12 girder located in the interior wall of a two-story home is based on various factors, including the type of wood, the grade, and the loading it will resist. The specific span mentioned indicates that a triple 2x12 girder, which provides added strength and stability due to the engineered configuration, is capable of supporting the loads typical in residential construction.

In this context, #2 Douglas fir is known for its strength properties, making it a suitable choice for structural elements like girders. The span of 5'-4" reflects the limitations set by building codes and engineering standards, which account for safety and performance under expected load conditions, such as live loads from occupancy and dead loads from the structure itself.

This value recognizes the need for the girder to not only carry its own weight but also accommodate additional loads from the structure above, ensuring adequate performance over time without excessive deflection or failure. Hence, 5'-4" is seen as the correct maximum span, aligning with engineering principles governing the material's limits and the typical applications in residential construction.