What is the tolerance range for the spacing of trusses along their bearing support?

The correct tolerance range for the spacing of trusses along their bearing support is +/- 1/4 inch. This specification is important for ensuring proper load distribution and structural integrity. Maintaining this tolerance helps in aligning trusses accurately to their supports, which is crucial for the overall stability of the structure.

When trusses are spaced too far apart or too close together, it can lead to uneven load distribution, potential structural failure, or difficulties in connecting other components like sheathing or roofing systems. Therefore, adhering to a +/- 1/4 inch tolerance ensures that builders can achieve consistency in installation while allowing for minor variations that might occur during construction.

Understanding this tolerance is vital for contractors and builders in practical applications, as it reflects industry standards and practices meant to enhance safety and performance in construction projects.