The Research Council on Structural Connections (RCSC) Specification for Structural Joints Using High-Strength Bolts provides state-of-the-art criteria for design and installation of ASTM high-strength bolts and assemblies. These recommendations become mandatory if and when the local code adopts them. In Canada, structural design and inspection of bolted joints and installation of high-strength bolts should comply with [...]
Bolted connections, used in seismic‑force‑resisting systems (SFRS) for which the seismic design loads are based on a ductility‑related force modification factor, Rd, greater than 1.5, must satisfy Clause 27.1.6 of S16‑14 as well as other pertinent requirements that apply to bolted connections. In accordance with Clause 27.1.6, these bolted connections shall: (a) have pretensioned [...]
Snug-tightness is the tightness that is attained with a few impacts of an impact wrench or the full effort of an ironworker using an ordinary spud wrench to bring the connected plies into firm contact. The applications for which pretensioned instead of snug-tightened bolt assemblies are required can be found within Clause 22.2.2 of the S16-14: [...]
A325 and A490 bolts are household names. What are F1852 and F2280? ASTM A325 AND A490 BOLTS are the high-strength bolts used for structural applications in North America. Their twist-off type counterparts are F1852 and F2280, respectively (Figure 1). ASTM standards A325M and A490M cover the metric versions (although metric bolts are rare). Generally, bolt [...]