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Steel Interchange


If you’ve ever asked yourself "why?" about something related to structural steel design or construction, Modern Steel Construction’s monthly Steel Interchange column is for you! Send your questions or comments to solutions@aisc.org.


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February 2010

Member Stiffness Reductions
ASTM A490 Bolts Subject to Tension
Delayed Construction
Sx or Zx?
HSS Properties
Bolt Entering Direction
Stiffened Extended Single-Plate Shear Connection
Column Tier Height
Tension Control Bolts
Vertical Bracing Connection

January 2010

Extended End-Plate Stiffener
Anchor Rod Tensile Strength
Tension Calibrator
Flexure of an Unequal Leg Angle
Torsional and Flexural-Torsional Buckling
Minimum Lateral Load
Field Cutting of Steel
C-Coefficients
Temperature at Time of Erection
Plug Welds for Doubler Plates
Bearing Length - Nreq
Reduction in Area for Bolt Holes

December 2009

Reuse of Bolts
Slip-Critical Connections
UT of CJP Welds
K-Brace for OCBF System
Beam Bracing
Channel Columns
Bolt Hole Alternatives for Fit-Up
Use of Overstregnth Factor
Number of Washers

November 2009

Calculation of Weights
Document Discrepancies
Pipe Design
Allowable Stresses in 1967
Large Bolted Connections
High-Seismic Column Splice
Steel Properties at Elevated Temperatures
U-Factor in 1989 Column Tables
High-Seismic Column Splice Location

October 2009

Fillers
SCBF X-Brace
Evaluation of Existing Structures
Bolt Hole Sizes
Class A and Class B Coatings
Second-Order Analysis
Panel Zone Shear Strength
Conventional Configuration Single-Plate Shear Connections
Nut Type for Anchor Rods

September 2009

HSS Steel Availability
Installation Torque
Axial Strength of Channels
Thermal Cutting
Mill Cut or Square Cut?
Puddle Welds
Anchor Rods
Increase Fillet Weld Size for Gap?
Delayed Steel Erection
Prequalified Weld Details

August 2009

Bolt Spacing for Prying Action
Shear Center
Section Modulus Relative to Angle Leg Toe in Compression
Edge Distances for Single-Plate Shear Connections
Use of the Overstrength Factor Ω0
Evaluating Existing Bracing Connections
Beam Bracing

July 2009

Width-Thickness Limits for S-Shape with Cap-Channel
Column Buckling
Countersunk Bolts
Prequalified and Qualified High-Seismic Moment Connections
HSS Seismic Connections
Design Using the 2005 Specification
Rivet Head/Shaft Diameter Relationship
Single-Plate Shear Connections to HSS
Shear Lag

June 2009

Galvanized Slip-Critical Connections
Floor Plate
Rotational Restraint at Support
Bolting for High-Seismic Applications
Nut Engagement
Hole Sizes for Galvanized Bolts
Stiffeners for an EBF Link
Tensile Strength of Anchor Rods
Punching Shear
Shear Lag Factor

May 2009

Direction of Bend
Moment Connections
ASTM A449 Threaded Rods
CJP Weld for HSS
W/D Ratios
Elevated Temperature Service
Lifting Plate
Weak-Axis Flexure of Plates
Camber Measurement
Non-Destructive Testing of CJP Welds
Eccentrically Loaded Weld Groups
Thickness Limitation for Single-Plate Shear Connection

April 2009

Cb for HSS Beams?
ASTM F1554 vs. ASTM A449 Anchor Rods
Reuse of ASTM A325 Bolts
Brace Stiffness
Fire Rating of Concrete-Filled HSS
Welding or Bolting?
Design Guide 11—Walking Speeds
Column Leveling Plate
Round HSS or Pipe?
Extended Single-Plate Shear Connection

March 2009

Single-Angle Connection Tables
Referenced Design Standards
Brace Stiffness
ASTM F1554 versus ASTM A449 Anchor Rods
Calculating Cb
The Richards Factor
Cb for HSS Beams?
Shear Connectors Used in Multi-Story Construction
Double-Angle Connection Capacity
Basic Design Value Cards

February 2009

Extended Single-Plate Shear Connections
Compactness Criteria for Angles
IMF and OMF Connections
kc Factor?
Bending Bolts?
Restrained or Unrestrained Rating?
Camber Measurement
Iyc of Compression Flange
What is rts ?

January 2009

ASD Flexural Capacity in the 2005 Specification
Steel Types
Knee-Braced Frame
Dynamic Analysis
Skewed Single-Plate Connection
Prequalified 4ES Connection
Prequalified Connection Standards
Doubler or Stiffener Plate?
Thermally Cut Holes

December 2008

ASTM A500 Rounds
A325SC Bolts?
Connecting a Cambered Truss
Welding Anchor Rods to Rebar
Base Metal/Fastener Compatibility
Beam "Sweep"
Double-Concentrated Forces

November 2008

Effective Length of Vertical Braces
Specifying End Reactions
Beam/Column Connection with Axial Compression
Single Angle in Flexure
Extended Single-Plate Shear Connections
Bracing for Cantilever Beams

October 2008

Slip-Critical Bolts?
Charpy V-Notch Requirements
Flare-Bevel Groove Welds
Lessons Learned from the AISC Seminar
Welding in the K-Area?
Turning the Bolt Head
Block Shear Strength

September 2008

KL/r Modified for Single-Angle
Flexural Capacity of Channels
Fillet Weld Strength
Anchor Rod Push-Out
Fillet Weld for Single-Plate Shear Connection
Lp for Non-Compact Shapes
ASD or LRFD?

August 2008

Matching Filler Metals to Base Metals
Edge Distance Requirements
Joint Type in Seismic Applications
Effect of Flange Slenderness on Beam Capacity
Seismic Shear Loads on Components
Fit-Up Problems
Beam-Column Design
W8 Columns
Support Condition for Torsion
Selecting Seismic LFRS
Effects of High Temperature

July 2008

Stiffeners Required?
Standard Bolt Hole Size
Fillet Weld/Base Metal Thickness Correlation
Slip-Critical Faying Surfaces
V and Inverted-V Lateral Systems
Column Splice Locations
Direct Analysis Method
Singly Symmetric Shapes

June 2008

Turn-of-Nut Method
Web Slenderness Ratio
Comparison of Historic Shapes to Current Shapes
Two-Story X-Bracing
Restrained or Unrestrained?
Shape Group Numbers
Delamination
Seismic Design for Horizontal Bracing Members
Specifying Reactions

May 2008

CB Series Beams
Drilled-in Anchors
Historic Section Properties
Use of Grade 65 Steel
Pretension for TC Bolts
Remediation for Deflection Problems
One-third Stress Increase
Stiffness Reduction Factors
Single-Angle with Single-Bolt End Connection
R = 3.0 in SDC D?

April 2008

David T. Ricker
Welding to Existing Members
Lifting Beams
Double-Angle Connections
Crane Rail Tolerances
Rivet Removal

March 2008

Historic Lattice Columns
Flexural Strength Comparisons
Multiple Cranes in Runway
Evaluation of an Existing Structure
RBS Moment Connections
Backing Bar Thickness
Flexure of Single Angles
Edge Distance for Anchor-Rod Holes in Base Plates

February 2008

Nut Tightening on Anchor Rods
Combined Forces
Determining rt
LRFD or ASD
Steel for High-temperature Applications
Diagonal Brace Connection
Section Properties of Historic Shape
Strain Hardening

January 2008

Connection Strengths in the 13th Edition Manual
PJP Weld Throat
Washers for Anchor Rod Installations
KL/r Modified for Single-Angle
Shoring Removal
Double Angle Connection - Table 10-1
Recycled Content
Butt Splicing W-shape Beams
Fully Restrained or Partially Restrained
Suspended Sprinkler Loads

December 2007

Historic Lattice Columns
Evaluation of an Existing Structure
Shear Stud Requirements
Crane Runway Forces
Expansion Joint Location
Reduction for Splice Length
Seismic Retrofit of 1931 Building
Single Angle Design
Bolt Torque/Tension Equation?
Required Bolt Length

November 2007

Weak Axis Bending
Design Forces
R=3
Steel Availability & Fabricator Listings
Bending Radius
Shape Availability
Historic Steel Specifications
BF in Table 3-2
Unbraced Tee in Flexure

October 2007

Penetration into the Base Metal
Section Properties
PJP Weld Capacity
Single-Angle Bending
Slip-Critical Surface Classes
Edge Distance for Anchor Rod Holes
Historic Steel Beam Designation
Single-Plate Connections with Axial Loads

September 2007

Repairs at Protected Zones
Design Wall Thickness
65ksi Steel & LEED Certification
Slip-Critical Connection
Plate Girder Design
Traceability
Maximum Size of Fillet Weld
Specification Conformance for Existing Buildings
Extended Single-Plate Shear Connections
Thread Engagement

August 2007

Elevated Slab Tolerances
OCBF and Tension-Only Bracing
Pretensioned Bearing-Type Joints
Historic Shape Data
Stiffeners and Concentrated Forces
Girt Bracing
Required Edition of a Standard
Certification Exemption

July 2007

Base Anchorage in Seismic Zone
Backing Bar Removal
Moment Strength of Bolt Group
Shear Stud Placement
Additional Capacity Needed
Bearing Length
Column Table Using Rx/Ry

June 2007

Bolt Torque
External Load Applied to Pre-Tensioned Bolt
f Factor for Shear
Low-Temperature Service
LRFD Design
Non-Sesimic Braced Frame
Recycled Steel
Seismic Braced Frame Seminar
Serviceability & Strength Considerations for SC Bolted Joints
Tension-Only Bracing
Undefined Yield Strength in Manual Listing

May 2007

Backstepping
Filler Metal for High-Seismic Applications
Heat-Straightening Columns
Holes in Base Plates
Iy and J for Double-Angles
Knifed Connection
SCBF Brace Reinforcement
Slip-Critical Bolt Values
Slip-Critical Bolts Used in Shear Tabs

April 2007

Base Plate Bending
Bolt Values
Column Splice Design
Composite Steel Beam
Single-Plate Shear Connections
Torsional Unbraced Length
Wind Connections in Seismic Areas

March 2007

ASD and LRFD
ASTM F1554 Grade 36 vs. ASTM A36
End Panel
Flare Bevel Groove Welds in Tension and Compression
Historic Bolt & Rivet Strengths
Technical Bulletin No.3
What is the Difference Between Rt and Rts?
WT in Flexure

February 2007

1964 Drawings
AISC Specification Seminar
Backing Bar Requirements
Block Shear
Braced Frame Seismic Connections
Cantilever Framing
Lally Columns?
Slotted-Hole Dimensions
Tee Stem in Flexural Compression

January 2007

Galvanizing High-Strength Steel
High-Strength Bolts in 1956
Historic Non-ASTM Shapes
HSS Slot Tolerance (updated from October 2006)
Pile Shape?
Slip-Critical Bolts?
Steel Availability
Welding Carbon Steel to Stainless Steel

December 2006

Deep Column Section for SMF
Design Stress for Compression Members
Minimum Connections
Section Properties of Back-to-Back Channels
Thermal Cutting
Weld All Around?
Welding to 65ksi Steel
Workable Gage

November 2006

Floor Plate Design
Hooked or Headed Anchor Rod Embedment?
Limit States for HSS Flexural Members
Nominal or Tensile Stress Bolt Area?
Shop Camber - Field Measurement Conflict?
Use of "Actual" Tested Yield Strength for Design

October 2006

Edge Distance for Base Plate Hole
AISC Series B-3 Connection
Bolt Installation Method
No W8 Columns?
Non-Building Structure
Shear Tabs on HSS
Tube Slot Tolerance
Wireless Interference

September 2006

Beam Splice in Protected Zone
Bolt Hole Sizes
Column Base Anchorage
Historic Shape Information
Pipe or Tube?
Preheat Requirements
WUF-W Connections for Special Moment Frames

August 2006

100-Year-Old Steel
Bent Anchor Rods
Grade 50 Angle Availability
Metric Bolts
Seismic Requirements for Composite SLRS
Seismically Braced Frame
Shear Tab Edge Distance

July 2006

1945 Steel
Fireproofing HSS Beams
Minimum Fillet Weld Size
No More Group Numbers?
Thermal Cutting
Using OCBF in SDC D
Weight of Paper

June 2006

Combined Loads on Anchor Rods
Cruciform Columns and RBS
Reduced Coefficient of Slip Resistance
Rod vs. Nut Strength
Shear Connection Capacities
Strength of Truss Connections

May 2006

Anchor Rod Embedment Detail
Axial Compression Capacity in March 2006 Steel Interchange
Bolt Bearing Resistance
Determining Iz for Single Angles
Historic Specification Issue Dates
Overstrength Requirement for Seismic Design of Diaphragms

April 2006

Allowable Stress for Anchor Rods
Bracing of Double Angle Diagonal
Column-Beam Moment Ratio
Cruciform Column in SMRF Design
Principal Axes Properties
Seismic Response Modification Coefficient (R-factor)
Strong Axis Bending of a Flat Plate

March 2006

1925 Steel Rivets
Axial Compression Capacity
Bolt Length
Cb Factor for Frames Braced Against Joint Translation
Cambered Beam Connection
Demand Critical Welds OMF
HSS in 50 ksi Material
Load Tests
Seismic Prequalified Connections

February 2006

Calibrated Wrench Pretensioning
Cantilevered Beam Stability Bracing
Cleaning Steel for Fireproofing
Contract Addenda
Seismic Brace-to-Gusset Plate Offset
Weld Interactions

January 2006

Bent Anchor Rods
Charpy V-notch Test Results
Flame-Cut Bolt Holes/Residual Stress
Modulus of Rigidity for HSS
Short Anchor Rods
Slot Dimensions
Slotted Hole Length
Welding HSS

December 2005

Composite Filled HSS
Seismic Category
Shear on Anchor Rods
Steel Plate Shear Walls
Trial Size for Composite Beam
Welding to Old Steel

November 2005

Backing Bar Removal
Base Plate Minimum Edge Distance
Fatigue Based on Stress Calculation
Mill and Fabrication Tolerances
Seismic Provisions and Collector Design
Weld Access Hole Requirements
Welding to Sheared Edges

October 2005

Beam Size
Drawings Conflict
Gusset Plate Yield Line (from July 2005)
Repairing Bent Anchor Rods
Shop and Erection Drawings
Translating Between ASD and LRFD

September 2005

Bolt Installation Using Hand Wrenches
Column Splice Erection Tolerances
Hot-Dip Galvanizing and Vent Holes
Conduit and Composite Slabs
Seismic End-Plate Moment Connection
Shear on Anchor Rods
Structural Steel Inspection

August 2005

Continuous vs. Intermittent Welds
Maximum Spacing
Seismic Provisions: Application of Ry
Splices and CVN Toughness
Weak-Axis Moment Connection Plates
What are kdetailing and kdesign Values?

July 2005

Anchor Embedment Length
Anchor Rod Grades
Bending of Tee Sections
Factors for Base Plates
Gusset Plate Yield Line
Use of Shims

June 2005

Constructability
Continuity Plates for IMF
Design of HSS Base Plates
Fire Resistance of Concrete-Filled HSS Columns
Minimum Percentage of Composite
Punching Shear

May 2005

Bolted End Plate Moment Connections
Continuous Versus Intermittent Weld
Erection Plan
IMF/Pre-qualified Moment Connections
New ASD/LRFD Combined AISC Code
Welded Moment Connections
Welder Qualifications

April 2005

Architecturally Exposed Structural Steel
Balanced Welds
HP Shapes
Moment Connections to HSS Columns
One-Third Stress Increase
Shop Inspection
Stud Weld Substitution for Deck Weld
Welding ASTM A992 Steel

March 2005

Design of Cantilever Beams
Expansion Joints Required for Temperature
Minimum Flange Thickness for Welding Studs
Tightening Tension Control Bolts

February 2005

Bottom Flange Bending Capacity
Edge Distance and Load Direction
Preheat & Stud Welding
Rehabilitation of ASTM
Single-Angle Shear Connection Eccentricity

January 2005

Base Plate Edge Distances
Field Cutting of Openings
Older Steel Grades
Rotational Ductility of Shear Connections
Wind Connections

December 2004

All-Welded Single-Plate Shear Connection
Anchor Rods Under Combined Tension & Shear
Narrow Columns with Continuity Plates
Slender WT Stem in Flexural Compression
Welding to Galvanized Steel

November 2004

Composite HSS Column-Minimum Wall Thickness
Grout Packs & Base Plates
Notches in Wide-Flange Beams
OHSA & Double Connections
Preheat & Stud Welding
Seismic Provisions & Bolted Joints

October 2004

Beam Stability under Reverse Loading
Fillet Weld Design Strength Increase
HSS Connection Economy
Knee Braces on Crane Support Columns
Prequalified Shop Welding
Pretensioning Low-Strength Anchor Rods
Reduction in Stud Shear Connection Design Strength

September 2004

Anchor Rods Under Cyclic Loads
ASTM A490 Bolts and Fatigue Loads
Fillet Weld Terminations
Rehabilitation of ASTM A9 Steel and Rivets

August 2004

Column Splice Gaps
Cracks Over Composite Beams
Panel-Zone Web Sheer
Sloped Column Continuity Plates
Specifying Connection Design Forces
Weak-Axis Lateral-Torsional Buckling

July 2004

Backing Bar Removal
Filling Weld Access Holes
Grouting Base Plates
Seperators in Double Angle Struts
Sinlge Angle Under Axial Load and Bending
Unbraced Length of Cantilever

June 2004

Fillet Weld Size Limitations
Odd-Sized Holes
Paint on Faying Surfaces
Paint Under Nuts and Bolt Heads
Repairing Rough Edges
Roughness Limitations
Selecting Paint Systems
Tolerances
Weld Symbols
When To Paint

May 2004

Fatigue and Wind
Hole Spacing
Stitching Requirements
Stub Girder Construction
Threaded Coupler for Anchor Rods
Cambered Beam Connections

April 2004

Anchor Rods and Load Path
Bolt Tests
HSS and Single-Plate Shear Connections
OCBF Lacking Diaphragm Action
Re-Entrant Corners
Weak-Axis Moment Connections

March 2004

Buckling Restraint
Developing Welded Elements
Dimension Dilemma
Gages Gone
Non-Compact?
Seeing is Believing
Sleeve Nuts
Types of Bolts
Weld Metal Myth

February 2004

ASTM A325/A490 Bolts
Bearing Strength
HSS Seismic Braces
Seal Welds
Sufficient Thread Engagement
Welding Anchor Rods

January 2004

Blast Effects
Weathering Steel

December 2003

Fatigue Stress Range
Making Fillet Welds
Quality of Structural Drawings
T-Stub Moment Connection

November 2003

Changes in R Values
Fire Temperatures
Industry Standards
Spray-Applied Fire Protection
Steel After Fire

October 2003

ASD and Seismic Provisions
Bearing Strength
Bolts in Extended-End Plate Connections
Single-Angle Geometric Properties
Single-Plate Shear Connections
Threads in Tension Rods

September 2003

Curved Shapes
Pretensioning Anchor Rods
Referencing Specifications
Repairing Welds

August 2003

Fillet Weld Strength
Hot-Dipped Galvanized Bolts
Second-Order Effects
Shear Stud Reduction Factor
Unauthorized Shop Splices
Unpainted Steel

July 2003

ASTM A572 Grade 50 and ASTM A992
Bending Limits
Critical Buckling Stress
Designing For Large Cope Depths
Expansion Anchors and Washers
Height-Thickness Ratios
LEED Certification

June 2003

Flame Cut Holes
HSS Design Wall Thickness
Maximum Size of Fillet Welds
PR Connections
Slip Factor of Galvanized Steel
Tension-Field Action
Torque and Bolt Pretension
Torsion and ASD

May 2003

"Cold Galvanizing"
Abrasion Resistance of Galvanized Coating
Differences in Galvanized Steel Appearances
Environmental Impact of Zinc Coatings
G90 and A60 Coatings
Galvanized Steel Exposure Temperatures
Galvanized Steel in Contact with Other Metals
Galvanizing Large Articles
Hot-Dip Galvanized vs. Zinc-Plated Fasteners
Hot-Dip Galvanizing After Fabrication vs. Continuous Hot-Galvanized Sheet
How Does Galvanizing Protect Steel?
Painting Galvanized Steel
Performance of Galvanized Steel in Permanent Water Immersion
Salt Spray Tests for Galvanized Steel
Specifications For Hot-Dip Galvanized Steel
Specifying Zinc Amounts on Steel
Steps of the Galvanizing Process
Wet Storage Stains on Galvanized Steel

April 2003

Bolt Hole Sizes
Effective Length Factor
HSS Slotted Gusset Plate
Prying Action of Tees and Double-Angles
Seismic Force Reduction Factor
Weld Access Holes

March 2003

ASTM A36, A572, and A992
Height Limitations in OMFs
HSS Members in Seismic Design
OCBFs in Low Buildings
Ordinary and Intermediate Moment Frames
Sizing Washers

February 2003

Avoiding Column Continuity Plates
Column Erection Tolerances
Composite Floor Penetrations
Net Area Calculation
New ASTM Standards and Old AISC Specifications
Order of Precedence
Seismic Column Splices
Whitmore Section

January 2003

Bolted Hanger-Type Connections
Prying Action

November 2002

Extended End-Plate Connections
Hollow Structural Sections and Pipes

October 2002

Consideration of Connection Eccentricity
Shop and Erection Drawing Standard
Single-Plate Shear Connection
Tees Under Flexure
Thickness of Gusset Plate for Fillet Welds
Thread Engagement

September 2002

Circular Base Plate Design
Moment Frame/Seismic
PR Connections
Pretensioning Anchor Rods
Welding Through Paint

August 2002

Anchor Rods
Built-Up Shapes
Galvanizing
Shear Capacity of Bolts
Workable Gages

July 2002

Material Specifications
Shape-Fillet Encroachment
Slip-Critical Joint Surface Preparation
Steel Deck Details
X-Bracing Design

June 2002

Restrained Condition
Shear Lag
Square Tubular Section Arches

May 2002

Bolt Orientation
Bolted Connection Design
Bottom Flange Plate
Gusset Plate Buckling
Lacing Column Design
Masonry Shelf Angles

April 2002

Backing Bars
Seismic Design
Seismic Design of Base Plates

March 2002

A325 and A490 Bolts
Cambering Equipment
Shear Tabs
Traceability and Identification
Web Panel-Zone Shear

February 2002

Curved Members

December 2001

Bolt Projection Beyond Nut
Flexure in AISC ASD Specification
Slip-Critical Connections

November 2001

Biaxial Bending in Beams
IBC 2000 and AISC Seismic Provisions
Welding Through Metal Deck

October 2001

Lateral Drift with Brick Veneer or Concrete Masonry
Welding on Existing Members

September 2001

Anchor Rods too Short
Building Lines
Crane Design
Curved Structural Members
Stiffener Requirements

August 2001

1929 Properties
A36 Plate
Braced Frames and 1997 UBC
Cambering Galvanized Members
Column Splices
Galvanizing Limits
Old Beam Sizes
Roof Deck Providing Bracing
Single Plate Connections

July 2001

Beam Camber
Origin of K-factors for Columns

June 2001

Bolt Shear/Tension Interaction
Semi-Rigid Connections
Steel Sheet Piling
Tensile Area for Threaded Fasteners
Welding Channels to Wide-Flange Beams

May 2001

Lateral Support for Beams
Notional Loads
Slip-Critical Galvanized Surface Preparation
Slotted HSS Connections
Welding Older Steel

April 2001

OSHA Rules for Erection
Shelf-Angle Design
Uniform Force Method

March 2001

Second Order Analysis
Snug-tightened Bolts Make Sense
Special Truss Moment Frames
Surface Finishes
Technical Note: Specifying Anchor Bolts

February 2001

Bent Clip Plates for Connections
Heat Straightening vs. Mechanical Realignment
Load Transfer in Bolted Connections
Technical Note: ASTM A992 now costs less than A36 for W-shapes
Use of "Jam" Nuts

January 2001

Checking Camber in the Field
Economical Composite Beam Design
Seismic Requirements for Simple Buildings
When to Use ASTM A449 Bolts

December 2000

A992
Seismic Connections
Single Angles
Technical Note: Pipe vs. Round HSS
Web Openings

November 2000

AASHTO Bearing Stiffeners
Welding Studs Through Paint

October 2000

Bracket Plates
Bridge Fillets and Haunches
Minimum Connection Depth

September 2000

Drafting Standards
Gas Metal Arc Welding (GMAW)
Holes for Anchor Rods
HSS Properties
HSS Through-Plate Connections
Re-Use of Shop Drawings
Twist-Off Bolts

August 2000

HSS Cap Plates & Drainage Holes

July 2000

Bolts with Cyclic Loads
Exposed Steel
Floor Levelness
Grade 50

June 2000

Beam Gages
Cold Galvanizing
SCBFs
Seismic Overstrength Factors
Truss Analysis

May 2000

Composite Beam Deflections
Cope Radii
Crane Rails
Monorail Design
SAE Bolts
WT Shapes

April 2000

Double Angle Connections

March 2000

"Safety" Connections
Expansion Joints

February 2000

"X"-Bolts
Butt Splices
Girts
Single Plate Connections

January 2000

Seismic Connections
Temperature Differentials During Erection
Welding Through Paint

December 1999

Bottom Flange Bending Capacity
Flame-Cut Bolt Holes

November 1999

Angles and Channels in 50 ksi Steel
Temporary Structures
Using A940 Bolts in Slotted or Oversized Holes
V-Braces

October 1999

Cb Applied to Moment Frames With Pin Supports
Coatings on Connection Faying Surfaces
Compression Element Restraint Coefficient
Plug Welding to Anchor Rods
Sidesway Behavior of Frame
Simple Shear Tabs & Fillet Welds

September 1999

Erection Clearance & Slip Critical Connections
Short Slots in Double Angle Connections
1/3 Stress Increase

August 1999

Short Shear Studs
Threaded Connectors in Tension

July 1999

"Banging Bolts"
Properties for HSS Sections
Stair Stringers & Stiffener Plates
Welding Partially Restrained Connections

June 1999

Column Base Plate Shear Lugs
Crane Rails
Drilled Holes for Anchor Bolts
Guidelines for Bent Anchor Rods
Slenderness Ratio

April 1999

Lateral Support for Beams
Weathering Steel

March 1999

Concrete Cover of Shear Stud
Construction Joints
Design Strengths for Clevises

February 1999

Bolt Hole Sizes
Definiton of "Mill to Bear"
Extended Shear Tabs
Materials and Design Properties in Older Structures
NDE Inspection
Non-Destructive Examination
OSHA Requirements for Column Base Plates
Welding to A7 and/or A9 Steel

December 1998

Friction Coefficients
Stiffening End-Plate Moment Connections
Weak Axis Effective Length

November 1998

Base Plate Grouting
Bolts in Extended End-Plate Moment Connections
Machine Bolts
Stiffener Member for Bending Moment

October 1998

Through Truss Pedestrian Walkway
Wind Load Applications: Enclosed vs. Partially Enclosed

September 1998

Oversized Bolt Holes
Repair Code for Steel Beams

August 1998

Bending Members
Specific Load Combination

July 1998

Rivet Removal

June 1998

Steel Deck Diaphram on Gabled Roof

May 1998

Composite Beam Design
Reinforcement Design

April 1998

Composite Action in Encased Beams
Full Contact Joints
Long-Span Plate Girder
Seismic Provisions vs. LRFD Specification
Whitmore Section

March 1998

OSHA Requirements for Tie Off Points
Pratt Truss
Unbraced Length of Column

February 1998

Checking Tube Wall for Failure
Designing Built-Up Section for Moving Concentrated Loads
Throat Thickness of Fillet Welds

December 1997

End-Plate Connections
Minimum Length of Thread on Structural Bolts

November 1997

Stiffener Welded to Flat Plate

October 1997

Allowable Stress for Steel Tank Wall
Load Factors for Pre-Packaged Equipment
St. Venant and Warping Torsion in Monorails

September 1997

Lifiting Beams
Mig Wire Size for E70XX Specification
Tolerance of Crane Rail
Weld or Bolt First?
Welded Double Angle Connection Design

August 1997

A325 vs. A490 Bolts
Allowable Stress in Lintels
Design for Square Bins and Hoppers
High-Strength Bolts and Welds
Minimum Length of Thread on Bolts
Special Tolerances for Cladding
Weathering Steel High Strength Bolts

July 1997

Cambered vs. Rolled Beams

June 1997

Design Basis for Seat Angles
Designing a Hole for Piping
Equivalent Radius of Gyration
In-Plane Effective Length Factor
Stepped Column Design

May 1997

Bearing vs. Slip-Critical Connections
Bolted Connections in Tension
Load Capacity for Lifting Beam With No Lateral Support
Unbraced Trolley Beam
Warping Torsion Stresses

November 1996

I-beam Monorails

February 1996

Lateral Bracing

March 1994

Structural Tee Beam

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