Engineers’ Corner: Excessive Rotation During Bolt Installation
The turn-of-nut method is the standard installation method for high-strength fasteners such as ASTM F3125 grade A325 and A490 bolts. Pretensioned assemblies are installed to a minimum bolt tension specified [...]
Engineers’ Corner: Eccentric Loads on Bolt Groups with Slotted Holes
The CISC Handbook contains a number of tables for Eccentric Loads on Bolt Groups in Part 3. The tables (3-14 to 20) include groups with one to four columns of [...]
Steel Column Bases Under Combined Axial Load and BI-Axial Bending
Dr. Muntasir Billah, P.Eng. Assistant Professor, Department of Civil Engineering, Lakehead University Column base plate connections, typically consisting of a steel member welded to a steel base plate connected [...]
CSA S16’s New Annex P on Specifying Third-Party Inspections
CISC Steel Expert Bob Shaw The new CSA S16:19 Design of steel structures introduces "Guidance for specifying third party inspection of steel structures" as an informative annex. [...]
Engineers’ Corner: Unbraced Length in X-Bracing – Out-of-Plane Buckling
A typical concentrically braced frame featuring X-bracing and subject to a lateral load "P" is illustrated in Figure 1. The compression brace (C) is susceptible to in-plane buckling, although out-of-plane [...]
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