This Specification covers the design of bolted joints and the installation and inspection of the assemblies of fastener components the use of alternative-design fasteners as permitted and alternative washer-type indicating devices as permittedThis Specification relates only to those aspects of the connected materials that bear upon the performance of the fastener components. The Symbols, Glossary and Appendices are a part of this Specification. *Design for Strength Using Load and Resistance Factor Design (LRFD) *Design for Strength Using Allowable Strength Design (ASD) • Designed as flexible connections • Connections are assumed to be free to rotate • Vertical shear forces are the primary forces transferred by the connection • Require a separate bracing system for lateral stability *A plate is welded to the supporting member and bolted to the web of the supported beam The in-plane pair of legs are attached to the web of the supported beam and the out-of-plane pair of legs
to the flange or web of the supporting member The new ASTM specification F1852 refers to the fasteners frequently referred to as tension control, TC, twist-off,
or torque-and-snap fasteners. High-Strength bolts range in diameter from ½ to 1 ½ in. For bolts larger than
1 ½ in the AISC allows the use of ASTM A449 provided that they are not used in slip-critical connections.
b) Unfinished Bolts