The bracing force, Pb, required to stabilize a laterally unsupported member is a function of several factors including the initial out-of-straightness or misalignment at the brace point, ΔO, and the displacement of the bracing system, Δb, according to S16-14 Clause 9.2.6.2:
One of the many hidden gems within the CISC’s Handbook of Steel Construction is the Unit Factored Compressive Resistances, Cr/A tables in Part 4. These tables provide a quick and easy method of calculating the compressive resistances of compression members, such as columns or struts. Essentially, the tables list the unit factored compressive resistance, Cr/A (in [...]
The effect due to shear lag in a tension member is usually accounted for by means of an effective area method. For weld-connected members, Clause 12.3.3.3 of CSA S16-14 applies to members of various cross sections in general. When only one leg of an angle tension member is attached to its end supports, with longitudinal fillet [...]
Here is an example on how to apply the strength reduction factor, Mw for multi-orientation fillet welds. In the weld configuration shown in Figure 1, 8-millimetre fillet welds are used, Xu = 490 MPa and the plate is G40.21 350W steel. Note that the farside plate is thicker. In accordance with CSA S16-14 Clause 13.13.2.2: Vr = [...]
The discussion herein concerns ductile moment connections only and therefore does not apply to connections used in moment-resisting frames in ‘conventional construction’. Following the Northridge earthquake in 1994, North American standards mandated physical testing as the basis for design of beam-to-column connections in ductile steel moment-resisting frames. This requirement was adopted as an interim measure until [...]
Special Topic – Advantage Steel Issue No. 52 Over the last two decades, the advent of modern steelmaking technology has economically raised the strength levels of common structural steel products...
The CISC is excited to announce the opening of the CISC Steel Centre in the Department of Civil and Environmental Engineering at the University of Alberta!...
Seismic Corner - Advantage Steel Issue No. 50 A system developed for seismic resistance Common lateral-load-resisting systems, such as rigid frames, concentrically braced frames and shear walls, have traditionally served to resist wind effects and provide stability in general...
Brittle fracture is a complex subject. In order to limit the probability of its occurrence to an acceptable level,...
In 2014, the largest producer of channels and angles in Canada, Gerdau Corporation, introduced its new GGMULTI product...