Page 41 - Modern Steel Construction (April 2019)

How do you address cross-sectional distortion with Curved steel members of various lengths and radii form a sculptural
curved members? canopy at the Tecumseh Monument.
Regardless of whether you can eliminate wrinkles and/or con-
cavity (which is the most common type of undesirable distortion) When a curved member is to be connected to a straight member
shrinkage and growth can severely limit the ability to make con- or if two curved members of differing radii are to be connected
nections and can cause major delays and have cost implications to with a welded joint, it is always best to keep in mind the possibilities
a project. Welded connections, especially full-penetration, require of cross-sectional distortion and how that may negatively affect the

a very good t-up in order to achieve the desired results. Cross- fabricator’s ability to make a connection. Bender-rollers do their best
sectional distortion in the form of shrinkage and or growth can dras- to limit this type of distortion, which is often referred to as shrink-
tically limit the ability of the fabricator to make welded connections. age and or growth (some companies have established “up to and

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