Author: draftsman
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Wrench Clearance in Structural Steel Connections: Detailing for Bolt Installation and Tightening
Learn how to check wrench, socket, bolt insertion, and tightening access when detailing structural steel connections.
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HSS Nominal Wall Thickness vs. Design Thickness: What Tables, Drawings, and CAD Models Mean
Learn how HSS nominal wall thickness differs from design thickness and measured wall, and how each should be handled in steel tables, drawings, and CAD models.
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W-Shape vs. S-Shape vs. HP Shape: How to Identify and Detail Steel I-Sections
Compare W, S, and HP steel shapes by flange geometry, proportions, designations, typical uses, and practical CAD and detailing considerations.
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HSS Inside Dimensions: Clear Opening, Corner Radii, and Insert Fit
Learn why HSS inside dimensions cannot be determined reliably from outside size and wall thickness alone, especially when detailing inserts, plates, and connections.
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Clear Web Depth in W-Shapes: Flange Faces, Fillets, and Connection Fit
Learn how clear web depth differs from overall W-shape depth, why rolled fillets reduce usable space, and how to check plates, bolts, welds, and CAD details.
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Rolled Shapes vs. Built-Up Steel Members: How to Read, Model, and Detail the Difference
Learn how rolled shapes differ from built-up steel members, how each appears on structural drawings, and what drafters should verify before modeling or fabrication.
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How to Use Structural Steel Shape CAD Blocks Without Losing Dimensional Control
A practical workflow for selecting, checking, scaling, placing, and managing structural steel shape CAD blocks in engineering and detailing drawings.
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Mill, Fabrication, and Erection Tolerances in Structural Steel Detailing
Learn how mill, fabrication, and erection tolerances differ, and how to account for real steel geometry in drawings, CAD models, connections, and fit-up.
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Calculating Structural Steel Member Weight from Shape Tables
Learn how to calculate structural steel member weight from published unit weight and member length, with practical guidance for takeoffs, CAD models, plates, holes, and assemblies.
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Why W-Shapes in the Same Nominal Depth Series Do Not Line Up
Learn why W-shapes in one nominal depth series can have different actual depths, flange geometry, elevations, and connection detailing requirements.
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Why CAD-Calculated Steel Section Properties May Not Match Published Shape Tables
Learn why area, centroid, inertia, and other properties calculated from CAD profiles can differ from published structural steel shape tables.
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Bolt Layout Terminology in Steel Detailing: Gage, Pitch, Edge Distance, and End Distance
Learn how gage, pitch, edge distance, end distance, stagger, and hole spacing are interpreted in structural steel detailing and CAD drawings.
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