For practicality and economic reasons, codes are reluctant to enforce design for full elastic forces, especially where seismic forces are large. Inelastic design complicates the design substantially and has led to the concept of capacity-based design, a major departure from traditional design philosophy. The design becomes very challenging when seismic forces are significant, but wind or [...]
Eccentrically Loaded Weld Groups The second module in CISC's Design Modules lineup, "Eccentrically Loaded Weld Groups" is now available. The first module on "Eccentrically Loaded Bolt Groups" was the subject of a previous blog post: https://www.cisc-icca.ca/cisc-steel-design-modules-module-1-eccentrically-loaded-bolt-groups/ Design Module No. 2 covers traditional methods for determining the resistance of fillet weld groups in connections of various configurations [...]
Part 5 of the Steel Design Series (SDS-5) provides tables of properties and dimensions for the first series of Welded Wide-Flange (WWF) sections produced to metric dimensions, reprinted from the Handbook of Steel Construction, 2nd Edition, 1976. The tables are provided in both metric and imperial units, and they are intended mainly for designers involved in [...]
CISC is introducing the first module in a new lineup of upcoming Steel Design Modules. Module 1, "Eccentrically Loaded Bolt Groups", covers traditional methods for determining the resistance of bolt groups in connections of various configurations and subject to an eccentric point load applied either in-plane or out-of-plane. Bolt groups subject to an inclined point load [...]
The tables of Properties and Dimensions in Part 6 of the Handbook provide values of the depth (d), width (b) and wall thickness (t) of square and rectangular hollow structural sections (HSS). Values of the exterior and interior corner radii are not tabulated, however, mainly because these dimensions are not listed in CSA standard G40.20. Section [...]
Selecting the bolt length for any given grip and bolt diameter can be facilitated by using the chart entitled "Bolt Lengths for Various Grips" on page 6-167 in the Handbook of Steel Construction, 11th edition. The chart is applicable to the Imperial Series of ASTM F3125/F3125M bolts, such as Grades A325 and A490 high-strength bolts in [...]
In the current (11th) edition of the Handbook of Steel Construction, wide-flange (W‑shape) sections that are commonly used and readily available are highlighted in yellow colour, as shown on the accompanying figure. The availability of these sections was assessed by means of a survey of Canadian steel service centres during the preparation of the 11th Edition [...]
Published in early 2015, ASTM F3125-15 (later as ASTM F3125/F3125M-15a) is a consolidation and replacement of six ASTM standards (A325, A325M, A490, A490M, F1852, and F2280). General information on bolt design and installation aspects can be found in Advantage Steel No. 54, page 10, available at this link: https://www.cisc-icca.ca/product/advantage-steel-no-54/ In this “umbrella” standard, the name of [...]
Part 4 of the CISC Steel Design Series (SDS-4), "Welded Shapes - Properties and Dimensions" has been published. Tables of Welded Wide-Flange (WWF) and Welded Reduced-Flange (WRF) shapes are reprinted from the Handbook of Steel Construction, 10th Edition. They are intended mainly for designers involved in renovation projects. Essar Steel Algoma Inc. had been the prime [...]
Part 4 in the Handbook of Steel Construction contains tables of factored axial compressive resistances. For a small number of compression members, the width-to-thickness ratio of the flanges and/or web exceeds the limits given in CSA S16-14 Table 1. The compressive resistance of members subject to elastic local buckling (Class 4 sections) may be calculated using [...]