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AISC 348-20 Specification for Structural Joints Using High- Strength Bolts, 2020
- Specification for Structural Joints Using High-Strength Bolts
- Title Page
- Copyright RCSC 2020
- Preface [Go to Page]
- Significant Changes
- Table of Contents
- Symbols
- Glossary
- Section 1. General Requirements [Go to Page]
- 1.1. Scope
- 1.2. Loads, Load Factors, and Load Combinations
- 1.3. Design for Strength Using Load and Resistance Factor Design (LRFD)
- 1.4. Design for Strength Using Allowable Strength Design (ASD)
- 1.5. Referenced Standards and Specifications
- 1.6. Structural Design Drawings and Specifications
- Section 2. Bolting Components and Assemblies [Go to Page]
- 2.1. Group Designations
- 2.2. Heavy Hex Structural Bolts
- 2.3. Heavy Hex Nuts
- 2.4. Spline End Matched Bolting Assemblies
- 2.5. Washers
- 2.6. Washer-Type Indicating Devices
- 2.7. Geometry of Bolting Components and Assemblies
- 2.8. Galvanized and Coated Bolting Components and Assemblies
- 2.9. Test Reports
- 2.10. Storage and Lubrication
- 2.11. Reuse
- 2.12. Alternative-Design Bolting Components, Assemblies, and Methods
- Table 2.1. Group Designations for Bolts and Matched Bolting Assemblies
- Table 2.2. Permitted Nut Grades
- Table 2.3. Permitted Materials for Direct Tension Indicators
- Table 2.4. Dimensional Requirements for Bolting Components and Assemblies
- Table 2.5. Bolt Lengths Required to Be Fully Threaded in Accordance with ASME B18.2.6
- Table 2.6. Permitted Coatings for Bolts, Nuts and Washers
- Table C-2.1. Heavy Hex Bolt and Nut Nominal Dimensions
- Table C-2.2. Bolt Length Selection
- Section 3. Bolted Parts [Go to Page]
- 3.1. Connected Plies
- 3.2. Faying Surfaces
- 3.3. Bolt Holes
- 3.4. Burrs
- Table 3.1. Nominal Bolt Hole Dimensions
- Section 4. Joint Type [Go to Page]
- 4.1. Snug-Tightened Joints
- 4.2. Pretensioned Joints
- 4.3. Slip-Critical Joints
- Table 4.1. Summary of Applications and Requirements for Bolted Joints
- Section 5. Limit States in Bolted Joints [Go to Page]
- 5.1. Nominal Shear and Tensile Strengths
- 5.2. Combined Shear and Tension
- 5.3. Nominal Bearing Strength at Bolt Holes
- 5.4. Design Slip Resistance
- 5.5. Tensile Fatigue
- Table 5.1. Nominal Strengths per Unit Area of Bolts
- Table 5.2. Minimum Bolt Pretension, Pretensioned and Slip-Critical Joints
- Table 5.3. Maximum Applied TensileStress for Fatigue Loading
- Section 6. Use of Washers [Go to Page]
- 6.1. Snug-Tightened Joints Using Group 120, 144, or 150 Bolting Assemblies
- 6.2. Pretensioned Joints and Slip-Critical Joints Using Group 120, 144, or150 Bolting Assemblies
- Table 6.1. Washer Requirements for Pretensioned and Slip-Critical Bolted Joints with Oversized and Slotted Holes in the Outer Ply
- Section 7. Pre-Installation Verification [Go to Page]
- 7.1. Required Testing
- 7.2. Test Procedure
- Table 7.1. Minimum Bolt Pretension for Pre-Installation Verification
- Table 7.2. Minimum Initial Tension for Pre-Installation Verification of Installation in Accordance with Section 8.2.5 (Combined Method)
- Table 7.3. Default Initial Torque Range for Pre-installation Verification of Initial Tension in Accordance with Section 8.2.5 (Combined Method)
- Section 8. Installation [Go to Page]
- 8.1. Snug-Tightened Joints
- 8.2. Pretensioned Joints and Slip-Critical Joints
- Table 8.1. Nut Rotation from Snug-Tight Condition for Turn-of-Nut Method Pretensioning
- Table 8.2. Nut Rotation from Initial Torque for Combined Method Pretensioning
- Section 9. Inspection [Go to Page]
- 9.1. Snug-Tightened Joints
- 9.2. Pretensioned Joints
- 9.3. Slip-Critical Joints
- Section 10. Arbitration
- Appendix A. Testing Method to Determine the Slip Coefficient for Coatings Used in Bolted Joints [Go to Page]
- Section A1. General Provisions [Go to Page]
- A1.1. Purpose and Scope
- A1.2. Definition of Essential Variables
- A1.3. Retesting
- A1.4. Duration of Coating Slip Certificate
- Section A2. Test Plates and Coating of the Specimens [Go to Page]
- A2.1. Test Plates
- A2.2. Specimen Coating
- Section A3. Short-Term Compression Slip Tests [Go to Page]
- A3.1. Compression Test Setup
- A3.2. Instrumentation
- A3.3. Test Procedure
- A3.4. Slip Load
- A3.5. Slip Coefficient
- A3.6. Alternative Test Methods
- Section A4. Tension Creep Test [Go to Page]
- A4.1. Test Setup
- A4.2. Test Procedure
- References
- Index [Go to Page]
