Correspondence Courses on High Strength Bolting

Correspondence Courses on High-Strength Bolting

Course Outlines

Bolted Joints

The purpose of this course is to explain and clarify the code requirements and the proper methods for specifying and using bolted joints. Following completion of this course, the participant should be able to properly specify the type of bolted joint required for a specific connection, and to understand the installation and inspection requirements based upon the joint designation.

1.     Joint Types
2.     Shear/Bearing Load Transfer - Snug-Tightened and Pretensioned Joints
3.     Snug-Tightened Joints
4.     Pretensioned Joints
5.     Slip-Critical Joints
6.     Direct Tension Load Transfer
7.     Required Minimum Bolt Pretension - Pretensioned and Slip-Critical Joints
8.     RCSC Specification References
9.     Dimensions and Making of Bolt Holes

Bolting Materials and Usage

The purpose of this course is to explain and clarify the code requirements and the proper methods for specifying bolts, nuts and washers as fastener assemblies in structural steel connections. Following completion of this course, the participant should be able to properly specify the type of bolting materials required for a project, identify these materials, control the material’s quality upon receipt, and select the proper materials for installation.

1.     Structural Fasteners
2.     Dimensions and Making of Bolt Holes
3.     Jobsite Storage
4.     Lubrication
5.     Requirements for Washers
6.     Bolt Stickout and Approximate Bolt Lengths
7.     Suitable Nuts for Structural Bolts
8.     Bolt Head Markings
9.     Manufacturer and Supplier Marks
10.   Dimensions of Structural Bolts
11.   Nut Markings and Dimensions for Structural Nuts
12.   Dimensions of ASTM F436 Washers
13.   Dimensions of ASTM F959 Direct Tension Indicators

Turn-of-Nut Installation

The purpose of this course is to explain and clarify the code requirements and the proper methods for specifying or performing bolt installation using the turn-of-nut method. Following completion of this course, the participant should be able to properly specify and use high-strength bolts designated for turn-of-nut installation, perform pre-installation testing, snug the joint, install the fastener assembly, pretension the joint, and conduct visual inspection of the completed work.

1.     Pre-Installation Verification Testing Requirements
2.     Pre-Installation Verification - Turn-of-the-Nut Pretensioning Method
        when bolts are long enough to fit into the Skidmore-Wilhelm
3.     Pre-Installation Verification - Turn-of-the-Nut Pretensioning Method
        when bolts are too short to fit into the Skidmore-Wilhelm
4.     Required Minimum Bolt Pretension - Pretensioned and Slip-Critical Joints
5.     Pretensioning - Turn-of-Nut Method
6.     Inspection Procedure
7.     Lubrication
8.     Requirements for Washers
9.     Snug Tight Condition
10.   Systematic Tightening
11.   Bolt Stickout
12 . Reuse of Bolts Previously Pretensioned
App A. Required Rotation for Turn-of-Nut Method

Twist-Off-Type Tension-Control Bolt Installation

The purpose of this course is to explain and clarify the code requirements and the proper methods for specifying or performing bolt installation using the twist-off-type tension-control bolt method. Following completion of this course, the participant should be able to properly specify and use high-strength bolts designated for twist-off installation, perform pre-installation testing, snug the joint, install the fastener assembly, pretension the joint, and conduct visual inspection of the completed work.

1.     Pre-Installation Verification Testing Requirements
2.     Pre-Installation Verification -Twist-Off-Type Tension-Control Bolt Pretensioning Method
        when bolts are long enough to fit into the Skidmore-Wilhelm
3.     Pre-Installation Verification - Twist-Off-Type Tension-Control Bolt Pretensioning Method
        when bolts are too short to fit into the Skidmore-Wilhelm
4.     Required Minimum Bolt Pretension - Pretensioned and Slip-Critical Joints (kips)
5.     Pretensioning - Twist-Off-Type Tension-Control Bolt Method
6.     Inspection Procedure - Twist-Off-Type Tension-Control Bolt Pretensioning Method
7.     Lubrication
8.     Requirements for Washers
9.     Snug-Tight Condition
10.   Systematic Tightening
11.   Bolt Stickout
12.   Reuse of Bolts Previously Pretensioned
App A. Determining the DTI Calibration for Pre-Installation Verification Tests
    when bolts are too short to fit into the Skidmore-Wilhelm

Direct Tension Indicator Installation

The purpose of this course is to explain and clarify the code requirements and the proper methods for specifying or performing bolt installation using the direct-tension-indicator method. Following completion of this course, the participant should be able to properly specify and use high-strength bolts designated for direct-tension-indicator installation, perform pre-installation testing, snug the joint, install the fastener assembly, pretension the joint, and conduct visual inspection of the completed work.

1.     Pre-Installation Verification Testing Requirements
2.     Pre-Installation Verification - Direct Tension Indicator (dti) Pretensioning Method
        when bolts are long enough to fit into the Skidmore-Wilhelm
3.     Pre-Installation Verification - Direct Tension Indicator (dti) Pretensioning Method
        when bolts are too short to fit into the Skidmore-Wilhelm
4.     Required Minimum Bolt Pretension - Pretensioned and Slip-Critical Joints
5.     Pretensioning - Direct Tension Indicator Method
6.     Inspection Procedure - Direct Tension Indicator Method
7.     Lubrication
8.     Requirements for Washers
9.     Snug Tight Condition
10.   Systematic Tightening
11.   Bolt Stickout
12.   Reuse of Bolts Previously Pretensioned

Calibrated Wrench Installation

The purpose of this course is to explain and clarify the code requirements and the proper methods for performing high-strength bolt installation using the calibrated wrench method. Following completion of this course, the participant should be able to properly specify and use bolts designated for calibrated wrench installation, perform pre-installation calibration and testing, snug the joint, install the fastener assembly, pretension the joint, and conduct visual inspection of the completed work.

1.     Pre-Installation Verification Testing Requirements
2.     Pre-Installation Verification - Calibrated Wrench Pretensioning Method
        when bolts are long enough to fit into the Skidmore-Wilhelm
3.     Pre-Installation Verification - Calibrated Wrench Pretensioning Method
        when bolts are too short to fit into the Skidmore-Wilhelm
4.     Required Minimum Bolt Pretension - Pretensioned and Slip-Critical Joints
5.     Pretensioning - Calibrated Wrench Method
6.     Inspection Procedure - Direct Tension Indicator Method
7.     Lubrication
8.     Requirements for Washers
9.     Snug Tight Condition
10.   Systematic Tightening
11.   Bolt Stickout
12.   Reuse of Bolts Previously Pretensioned
App A. Determining the DTI Calibration for Pre-Installation Verification Tests
        when bolts are too short to fit into the Skidmore-Wilhelm

Bolting Inspection

1.     Principles of Bolting Inspection
2.     Bolt Holes
3.     Bolt Head Markings
4.     Bolt Manufacturer and Supplier Marks
5.     Nut Markings
6.     Jobsite Storage
7.     Pre-Installation Verification Testing Requirements
8.     Lubrication
9.     Requirements for Washers
10.   Systematic Tightening
11.   Snug-Tightened Joints
12.   Required Minimum Pretension - Pretensioned and Slip-Critical Joints
13.   Inspection Procedure - Turn-of-Nut Pretensioning Method
14.   Inspection Procedure - Twist-Off Type Tension-Control Bolt Pretensioning Method
15.   Inspection Procedure - Direct Tension Indicator Method
16.   Inspection Procedure - Calibrated Wrench Pretensioning Method
17.   Bolt Stickout
18.   Reuse of Bolts Previously Pretensioned
19.   Arbitration of Disputes - when bolts are long enough to use a Skidmore-Wilhelm
20.   Arbitration of Disputes -when bolts are too short to use a Skidmore-Wilhelm
21.   Determining the DTI Calibration