What is the minimum bearing needed for trusses at each end?

The minimum bearing required for trusses at each end is typically established to ensure proper stability and support for the load being carried by the trusses. A bearing surface of 3 1/2 inches is generally considered adequate for this purpose, allowing for enough contact area to distribute the weight of the truss across the wall or supporting structure, while also adhering to industry standards and building codes. This measurement helps to prevent failure or sagging of the trusses, which could compromise the structural integrity of the building.

In construction practices, using the correct bearing size is vital to ensure safety and compliance. A shorter bearing surface might not provide sufficient support, while a larger size would be unnecessary for standard applications, potentially leading to increased costs and material waste. Thus, a 3 1/2 inch bearing is aligned with best practices in the industry, balancing the need for structural strength and efficiency.