Are washers required in snug-tightened joints according to the Specification for Structural Joints?

In the context of snug-tightened joints, washers are not universally required for all configurations. The specification highlights that washers are only necessary in certain scenarios, particularly when a joint involves specific considerations like bearing surfaces, bolt types, or conditions that could affect the performance of the connection.

For instance, in instances where the surfaces of the connected parts are uneven or there is the potential for shear or bearing stresses which may degrade the joint's integrity, the use of washers can be mandated to distribute the load more evenly and eliminate potential damage to the connected parts. Furthermore, certain sections of the specification may explicitly state the requirement for washers, like in connections intended for particular performance criteria or types of structures.

Thus, understanding that the requirement for washers varies depending on the specific context and parts being connected is essential for compliance with the Specification for Structural Joints. This nuanced perspective differentiates which applications necessitate washers and aligns with best practices in structural engineering.