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Back-to-Back Steel Channels: Spacing, Built-Up Properties, and Detailing Datums

Learn how back-to-back steel channels are oriented, spaced, modeled, dimensioned, and checked as built-up structural members.

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Learn how work points, member centerlines, support faces, setbacks, and cut lines control structural steel detailing and CAD geometry.

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W16x40 reference with AISC shape dimensions, area, unit weight, section terminology, and practical guidance for steel design and drafting.

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Celsius 355 CHS 168.3×5.6 reference with diameter, thickness, sectional area, unit weight, EN 10210-2 context, and DWG access for detailers.

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