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πŸ”© Structural Steel Connection Design - Complete Guide

AISC-compliant connection types, bolted/welded joint analysis, capacity calculators, and detailing best practices.

14
Knowledge Pages
1
Interactive Tools
5
Case Studies
6
Resources
24
Lessons
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Engineering Workflow

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Structural Steel Connection Design - Complete Guide

Structural steel connections are the 'glue' that holds steel beams, columns, and braces togetherβ€”like strong metal joint...

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Quick Start

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Knowledge Base

14 pages
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Key Concepts

Structural Steel
Connection DesignBolted Shear
Connection Design
Welded Groove Weld
Capacity Calculation
Moment-Resisting
Base Plate Design
Beam-to-Column
Flange (Type FR)
Prying Action in
End-Plate Connections
AISC 360-22 vs.
AISC 341-22
Double-Angle Framing
Detailing Best Practices

Visual overview of key concepts and their relationships

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Real Projects

5 cases
L = 12.6 in Mβ‚™/Mβ‚š = 1.14 MCE Ground Motion Clear Height Constraint RBS + AISC 358 Cyclic Validation RBS Detail Flange Reduction Column Beam RBS Zone Challenge

High-Rise Office Tower in Seattle – SMF Beam-Column Connections

32-story steel-framed office tower with seismic design category D

Challenge: Ensuring ductile behavior under MCE-level ground motion while meeting architectu...
Midwest Warehouse Expansion – Bolted Shear Connections Under Fatigue Loading Fatigue cracking in shear tabs after 8 yrs A490 bolts β€’ No oversized holes Slip-critical β€’ SSPC SP10 + Class A Ξ”F_th = 24 ksi (Category C) U = 1.0 Class C Detail No reduction in fatigue life Class A 3" Ξ”F_th = 24 ksi

Midwest Warehouse Expansion – Bolted Shear Connections Under Fatigue Loading

150,000 sq ft distribution center with crane runway girders

Challenge: Fatigue cracking observed in existing shear tabs after 8 years of service; new e...
Texas Refinery Pipe Rack – Composite Beam-to-Column Connection Concrete-Filled Tubular Column Steel Beam Connection Zone Elastomeric Pad Qβ‚™ = 62 kips/stud ΞΈ = 0.008 rad Flexibility Absorbs Rotation STAAD.Pro Stiffness Matrix Input Thermal Ξ”T β†’ High Secondary Moments L = 70 in

Texas Refinery Pipe Rack – Composite Beam-to-Column Shear Connections

Heavy-duty pipe rack supporting 36-inch process lines with thermal cycling

Challenge: Thermal expansion differentials between concrete-filled tubular columns and stee...
Northeast Bridge Replacement Field-Welded Flare-Bevel Moment Connections Pier A Pier B Steel Girder (W36Γ—150) Flare-Bevel Groove Duplex SS Backing E110K2 Weld Tp = 215Β°F PWHT 2.5 hr hold Phased-Array UT Marine Env.: High Humidity & Salt Exposure β†’ Corrosion Risk Structure Weld Detail Corrosion Mitigation Environmental Challenge

Northeast Bridge Replacement – Field-Welded Flare-Bevel Moment Connections

Replacement of 1950s steel truss bridge with modern orthotropic deck system

Challenge: Field welding in marine environment with high humidity and salt exposure requiri...
CA Data Center Campus – EBF Link Design Short Link
L ≀ 2.5b Long Link
L β‰₯ 5b
Energy Dissipation Excessive Rotation Design Parameters: β€’ Mβ‚š = 1,280 kip-in β€’ Vβ‚š = 185 kips β€’ ASTM A572 Gr. 50 Short Link Long Link Challenge Foundation Level

California Data Center Campus – Eccentrically Braced Frame (EBF) Link Connections

Tier IV data center with strict drift limits (< 0.005h) and redundancy requirements

Challenge: Achieving target energy dissipation without excessive link rotation that would c...
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Downloads

6 resources
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Learning Path

24 lessons

Master Structural Steel Connection Design through a structured learning path β€” from fundamentals to advanced applications.

Your Progress 0/24 completed
29 Why Connections Are the Weakest Link β€” And Why That’s Good 30 Decoding AISC 360 Chapter J: The β€˜How’ Behind Connection Limits 31 AISC 341 Seismic Provisions: What Changes When Life Safety Is Non-Negotiable 32 Shear vs. Bearing vs. Slip-Critical: Selecting the Right Mode 33 Bolt Group Analysis Using Elastic Method β€” Step-by-Step 34 Practical Bolt Tightening: Torque, Tension, and Calibration Reality 35 Groove vs. Fillet: When Geometry Dictates Strength 36 Effective Throat & Weld Strength Calculations β€” With Real Electrode Data 37 Field Weld Failures: Lessons from the NorCal Bridge Project 38 Double-Angle vs. Shear Tab vs. Single-Plate: Choosing for Constructability 39 Beam-to-Column Flange-Bolted (FR) Connections: Detailing Pitfalls & Fixes 40 End-Plate Moment Connections: From Praying Action to Prying Action 41 Base Plate Design for Uplift & Overturning: Anchor Rod Layout Optimization 42 Special Moment Frame (SMF) Qualification Pathways Explained 43 EBF Link Design: Balancing Energy Dissipation and Replaceability 44 Composite Beam-to-Column Shear Connections: Interaction Effects You Can’t Ignore 45 Thermal Compatibility in Composite Connections: Real Data from Texas Rack 46 Block Shear Failure: When Gusset Plates Surprise You 47 Rotation Stiffness Modeling: How Your Connection Choice Alters Frame Drift 48 AISC J3.4 in Practice: Edge Distance, Spacing, and Hole Sizing Decoded 49 Weld Symbol Literacy: Reading Drawings Like a Fabricator 50 Connection Cost Drivers: Labor vs. Materials vs. Inspection 51 QA/QC Workflow for High-Reliability Connections: From Shop Drawing Review to NDT Signoff 52 Comprehensive Quiz: Structural Steel Connection Design Mastery
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