AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
AISC is a Registered Registered Provider with The American Institute of Architects Architects Continuing Education Systems (AIA/CES). (AIA/CES). Credit(s) earned on completion of this program will be reported to AIA/CES for AIA AIA members. Certificates of Completion for both AIA members members and non-AIA members are available upon request. This program is registered with AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation.
There’s always a solution in steel
Copyright Materials This presentation is protected by US and International Copyright laws. Reproduction, distribution, display and use of the presentation without written permission of AISC is prohibited. © The American Institute of Steel Construction 2016
There’s always a solution in steel
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Course Description Fundamentals Fundam entals of Bolting Bolting and Welding Welding
Session 4: 4: - Bolting Pt. 4: Beyond Beyond the Bolts November 1, 2016 This session will provide an understanding of industry specific supplementary requirements for fasteners. Requirements for rotational capacity testing and fastener coatings will be explained. A review of potential issues related to bolting, such as fastener reuse and nonconformance handling, and how to address or avoid common problems at the job site will be presented.
There’s always a solution in steel
Learning Objectives requirements. • Learn about supplementary requirements. esting.. • Learn about Rotational Capacity Testing • Learn about permitted structural fastener
coatings.. coatings issues. • Review common bolting issues. reuse. • Learn about bolt reuse. • Gain an understanding of nonconformance
handling.. handling
There’s always a solution in steel
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
FUNDAMENTALS OF BOLTING FUNDAMENTALS BOLTING AND WELDING BOLTING SESSION 4: BEYOND THE BOLTS
Chad Larson President LeJeune Bolt Company
MANUFACTURING MANUF ACTURING INSPECTION
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
What gets tested? Always
Sometimes
• Dimensions – Geometry
• Magnetic particle
• Chemistry – not usually directly
• Tensile Strength
• Tensile Strength
• Rotational capacity
• Proof Load
• Assembly tension testing
• Surface Discontinuities
• Coating thickness
• Hardness
• Carburization/Decarburization
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Tension Testing (Tensile Testing)
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Hardness Testing
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Carburization/Decarburization
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Continuous Heat Treatment
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Batch Heat Treatment
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Magnetic particle inspection
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
SUPPLEMENTARY REQUIREMENTS
What are F3125 S1 – S4 • S1. Bolts Threaded Full Length • Just like what it says, up to 4D • Special Marking “T” A325T • Uses and cautions – Turn of Nut - Shear Strength • S2. Alternate Dimensions • Just like what it says • Special marking “S” A325S • Uses and cautions • S3. Lubricant • S4. Rotational Capacity Testing 20
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
S3
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ROTATIONAL CAPACITY
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
New Rotational Capacity Test - F3125 Annex A2.1.1 • Details rotational capacity (RC) tests intended to evaluate the presence of
lubricant, the efficiency of lubricant and the compatibility of assemblies. The test serves as a further quality control measure against excessively overtapped nuts, material with insufficient ductility, and generally assures the assembly of elements (bolt, nut, and washer) will function together as a unit to achieve required preloads. • Assemblies shall be purchased and installed as matched sets. • Intended primarily for galvanized fasteners, and fasteners that must be fully
tensioned in structural applications. When specified in contract documents this test may also be used for field-testing. 23
7/8” Diameter 3”- 6” Clamp Load Analysis 75000 70000 65000 60000 55000 50000
d a 45000 o L 40000 p m35000 a l C 30000 25000 20000 15000 10000 5000 0 1
11
21
31
41
51
61
71
81
91 101 111 121 131 141 151 161 171 181 191 201 211 221 231 241 251 261 271 281 291 301 311 321 331 341 351 361
Degrees of Rotation 24
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Rotational Capacity Test • Applicable to coated fasteners (sometimes) - ASTM • Required on all assembly lots, plain or galvanized for bridge work - AASHTO • Good, but extreme functional test of fasteners • What if connection only requires snug tight, still might be valuable (what is snug tight?) • Test generally tied to double the Turn of Nut installation requirement which is not linear, but
modified over the years
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Original Rotational Capacity Test ASTM • Established by F16.02 for HDG bolts based on research that showed un-lubricated HDG
fasteners could not reliably reach minimum installation tension prior to torsional failure. Expanded to cover Mechanically Galvanized fasteners when B695 was added to A325. • A means to test lubrication, which is required to prevent galling at the thread interface and
bearing surface. • Old test was a simple Pass/Fail test. You never k now if you almost failed. • Vague manufacturer requirement in A325 and RCSC. • Assuming bolt meets specification the test is primarily a function of nut (or coating) lubrication but
was part of the bolt only specification.
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Copyright © 2016 American Institute of Steel Construction
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Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
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Rotational Capacity Testing AASHTO and FHWA established a similar test, adding the requirement that the test be performed on ALL structural fasteners. • Test has more specific in pass/fail criteria • Test added maximum torque at minimum design tension (via max K factor) • Minimum tension at final rotation of 1.15 design tension • This test is a good general fastener assembly performance test • But, these agencies primarily use bolts subject to full pretension
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Rotational Capacity Testing Primary criteria tested • Strength (tensile) • Thread fit (proper oversize to avoid interference fit) • Thread strength (functional overlap) • Lubrication (too little causes torsional failure) • Ductility (extreme plastic performance or stretch beyond yield) • Quantifies lubrication effectiveness 29
Problems with the current RC tests • Required by ASTM at the producer level, but should be at the distribution and end user level. • ASTM does not address plain fasteners, which can have the same issues with lack of lubrication,
particularly with Type 3 fasteners, “Coatings” often provide more lubricity than plain. • Nature of the test makes variability inevitable. Particularly number of washers, +/- angle tolerance,
and number of threads in the grip. • Not all fastener assemblies need this level of performance by design. • A490 previously held to the same criteria as A325, but A490 is much less ductile. • AASHTO, FHWA did not like (appropriately) the ASTM test so they maintained their own versions.
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
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7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520 480
420
360 n o i t a t o R f o s e e r g e D
300
240
180
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520 480
420
360 n o i t a t o R f o s e e r g e D
300
240
180
RCSC Turn of Nut Req
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520 480
420
360 n o i t a t o R f o s e e r g e D
300
240
180
RCSC Turn of Nut Req
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520 480
420
360 n o i t a t o R f o s e e r g e D
300
Rotational Capacity Test Req
240
180
RCSC Turn of Nut Req
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520 480
420
360 n o i t a t o R f o s e e r g e D
300
Rotational Capacity Test Req
240
180
RCSC Turn of Nut Req
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520
Up to and Inc 4D
>4D Up to and Inc 8D
>8D
480
420
360 n o i t a t o R f o s e e r g e D
300
Rotational Capacity Test Req
240
180
RCSC Turn of Nut Req
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520
Up to and Inc 4D
>4D Up to and Inc 8D
>8D
480
420
360 n o i t a t o R f o s e e r g e D
300 180°
240
180
120°
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520
Up to and Inc 4D
>4D Up to and Inc 8D
>8D
480
420
360 n o i t a t o R f o s e e r g e D
320°
300
240
240°
180
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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7/8"-9 A325 Structural Bolt - 41,000 lbs. Minimum Cl ampload 520
Up to and Inc 4D
>4D Up to and Inc 8D
>8D
480
420
360 n o i t a t o R f o s e e r g e D
300
Rotational Capacity Test Req
240
180
RCSC Turn of Nut Req
120
60
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
Bolt Length
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Video – Rotational Capacity Testing
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COATINGS
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
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Coatings on Structural Bolts • B695 Zinc Mechanically Deposited – Group A Only • F2329 Zinc Hot Dip – Group A except Twist-Off • Research coming to permit on F2329 on Group B
• F1136 Zinc/Aluminum – Group A or B except Twist-Off • F2833 Zinc Rich Base Coat and Aluminum Organic/Inorganic Type – Group A
or B except Twist-Off • F1941 Electrodeposited Coatings – Group A Hex Only 46
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Coatings on Structural Bolts • Other coatings possible for 120KSI (Group A) • Others coming for 150KSI Grades (Group B) • Not always done by the manufacturer • Significantly effect thread fit, “K” Factor, and general fastener performance
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Coatings on Structural Bolts • Thickness only measured on significant surfaces • Not typically corrosion tested on a lot by lot basis • HDG on external threads only • Thread oversizing tolerances for newer coatings on A490 fasteners have been
standardized just recently
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Understanding Thread Fit - Coatings • Nut threads need to be oversized for most coatings • Oversizing the pitch diameter for clearance increases the nut minor diameter
by geometric relationship • Oversized nuts have less proof load capacity, more importantly, the increase in
minor diameter reduces the mated bolt stripping capacity
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Understanding Thread Fit - Coatings • Oversizing may change failure modes from bolt tensile failure to thread
stripping • Bolt tensile and nut proof load testing are performed with fixtures, the results
do not correlate to fastener assemblies • Care should be taken not to “over-tension” coated fasteners • Understand the specifics of your selected coating
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Coatings Example – Zinc Aluminum Flake
Bolt Grade 3 Washer
F1136 Grade 5
Nut 51
BOLT REUSE
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Reuse
• 2.3.3 Reuse: ASTM A490 bolts, ASTM F1852 and F2280 twist-off-type tension
control bolt assemblies, and galvanized or Zn/Al Inorganic coated ASTM A325 bolts shall not be reused. When approved by the Engineer of Record , black ASTM A325 bolts are permitted to be reused. Touching up or re-tightening bolts that may have been loosened by the installation of adjacent bolts shall not be considered to be a reuse.
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IS IT TOO TIGHT?
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Too Tight?
• No
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Unfortunately This Can Happen, But….
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
PROBLEMS Most projects go as planned, but……
Problems • Here is a breakdown of typical construction problems according to ENR
Magazine. • 65% from Insufficient, inappropriate or conflicting information • 17% from human error • 8% from weather • 5% from poor workmanship • 5% from materials failure
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Understand the chain of command • Owner • Architect • Engineer • Inspector • Project manager • Prime or general contractor • Sub-contractor
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• Regardless of the scale of the project, the owner and end user expect to get
what they pay for. This means a safe, attractive, functional structure, which performs throughout its service life with minimal risk and maintenance. Our job as suppliers is simply to meet their expectations. • Being prepared to respond to quality and technical questions, having the
proper knowledge of your product, and reacting in a timely and professional manner can prevent a simple question from turning into problem or a simple non-conformance from turning into a large claim.
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
The most common problems Be prepared and well versed in the most common of problems. • Surface discontinuities (head bursts, seams) • Low tension during preinstallation verification (equipment, training and quality) • Broken bolts or stripping during installation (often coatings and lubrication) • Storage and handling • Rotational capacity testing failing • No testing being performed • Thread damage
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The most common questions • Washer requirements • Typos and mistakes on test reports or shipping docs • Where can I get my TC tool calibrated • Can I substitute grade 5 bolts or grade 8 bolts for A325 or A490 • F3125/A325 labels and certificates • What is the proper torque for installation
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Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
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What Can Happen? • Fatigue
• Tensile Failure
• Rust or Weathering • Coating Adhesion
• Torsional Failure • Stress Corrosion Cracking
• Reamed Nut Threads • White Rust
• Hydrogen Embrittlement • Shank Out/Negative Stick-out
• Seams • Bursts • Poor Coating Thickness
• Low Tension • RC Test Failure • Inadequate Installation Tools
• Welded Parts • Storage and Handling Issues
• Lack of Installer Training • High or Low Hardness
• Quench Cracks • Improper Washer Usage
• Thread Stripping • No Control of Snug Tight
• Bolt Binding • Paint Adhesion • No Pre-installation Testing
• No Installation Clearance • Improper Mating Components • No Verification on Site
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
A number of things can go wrong, but…
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Surface Discontinuities – ASTM F788 or F812 Burst
Seam
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Bursts Are Quite Common Head burst
Head burst
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Burst, Seam or Crack? Seam
Quench crack
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Call Somebody! Quench crack
Quench crack
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Other Problems Bad threads or lack of engagement?
Adhesion or excessive impacting or bound bolt?
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Too Brittle or Too Small?
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Or Wrong Size?
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Hot Forged, Split Die Fin – in specification
Fin profile with a bit of swell
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Misc. Problems Coating Fixture Marks
Reamed Nut
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Workmanship Bolt problem or hole problem?
Adhesion
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Trained Installer, Match-Marked, Witnessed, Signed-off, didn’t break.
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Rust - How Much is Too Much? Could be OK, but need requalification
Most likely scrap
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Hole Size/Bolt Size Problem
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Bad Storage
Water
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Significant Corrosion
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Never Tightened
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Not Sure What To Say…
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Not Enough Engagement
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Flatness
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Wet Storage Staining
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ARBITRATION INSPECTION
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Arbitration Inspection
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SECTION 10. ARBITRATION - RCSC • When it is suspected after inspection in accordance with Section 9.2 or
Section 9.3 that bolts in pretensioned or slip-critical joints do not have the proper pretension, the following arbitration procedure is permitted.
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Arbitration • (1) A sample of five bolt and nut assemblies of each lot in question shall be
installed in a tension calibrator . • The material under the turned element shall be the same as in the actual
installation. • The bolt shall be partially pretensioned to approximately 15 percent of the
pretension specified in Table 8.1. • Subsequently, the bolt shall be pretensioned to the minimum value specified in
Table 8.1;
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Arbitration • (2) A torque shall be applied to the pretensioned bolt. The torque that is
necessary to rotate the nut or bolt head five degrees shall be determined. • The arbitration torque shall be determined by rejecting the high and low values
and averaging the remaining three; and,
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Arbitration • (3) Bolts represented by the sample shall be tested by applying the arbitration
torque to 10 percent of the bolts, but no fewer than two bolts, selected at random in each joint in question. • If no nut or bolt head is turned relative to its mating component by application
of the arbitration torque, the joint shall be accepted as properly pretensioned.
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Arbitration • If verification of bolt pretension is required after the passage of a period of
time and exposure of the completed joints, an alternative arbitration procedure that is appropriate to the specific situation shall be used. • If any nut or bolt is turned relative to its mating component by an attempted
application of the arbitration torque, all bolts in the joint shall be tested. Those bolts whose nut or head is turned relative to its mating component by application of the arbitration torque shall be re-pretensioned by the Fabricator or Erector and reinspected. The Fabricator or Erector, at their option, is permitted to re-pretension all of the bolts in the joint and subsequently resubmit the joint for inspection.
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
RCSC Arbitration Commentary • Commentary: • Arbitrated using torque wrenches after pretensioning is subject to all of the
uncertainties of torque-controlled calibrated wrench installation. The reliability of after-the-fact torque wrench arbitration is reduced by the absence of many of the controls that are necessary to minimize the variability of the torque-topretension relationship, such as: • (1) The use of hardened washers; • (2) Careful attention to lubrication; and, • (3) The uncertainty of the effect of passage of time and exposure in the
installed condition.
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Arbitration Commentary • Arbitration may be based upon an arbitration torque that is determined either
using bolts that can only be assumed to be representative of the bolts used in the actual job or using bolts that are removed from completed joints. • Ultimately, such arbitration may wrongly reject bolts that were subjected to a
properly implemented installation procedure. The arbitration procedure contained in this Specification is provided, in spite of its limitations , as the most feasible available at this time.
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
CLOSING
Unusual Aspects of Structural Bolting • Bolts are tensioned well into yield, this is a no-no in virtually every other engineered
fastener application
• Bolts are not sold as matched sets in many cases • Thread lengths are very short, bolts tend to perform better with longer threads • Acceptance testing is frequently done in the field, which is often the 1 st point of
assembly
• There is no industry requirement for “K” Factor • Snug tight as it pertains to fully tensioned bolts is highly variable - operator,
equipment, lubrication and installation procedures.
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Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Learning Objectives – Session 1 • Gain an understanding of the basics of bolting. • Gain an understanding of the background and
intent of fasteners. • Learn about bolt manufacturing steps • Become familiar with fastener terms. • Gain an understanding of functional attributes for
fasteners. • Learn about thread design and geometry
There’s always a solution in steel
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Learning Objectives – Session 2 • Learn about standards organizations responsible
for bolted connection specifications. • Learn about recent changes to fastener standards. • Gain an understanding of the basic connection. • Gain an understanding of how connection design
relates to fasteners. • Hear practical suggestions to keep costs down
and projects on schedule.
There’s always a solution in steel
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Learning Objectives – Session 3 • Learn about required ordering information. • Learn about proper fastener storage and handling. • Gain an understanding of pre-installation
verification testing. • Learn about common installation methods. • Learn about inspection requirements for different
installation and joint types.
There’s always a solution in steel
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Learning Objectives – Session 4 • Learn about supplementary requirements. • Learn about Rotational Capacity Testing. • Learn about permitted structural fastener
coatings. • Review common bolting issues. • Learn about bolt reuse. • Gain an understanding of nonconformance
handling.
There’s always a solution in steel
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
What Else Can You Do? • Get additional fastener training, a number of options exist • Get more familiar with the standards • Ask questions • Get involved in committee work • Work with reputable contractors and suppliers • Be willing to work through problems 103
Good Reading • John H. Bickford, An Introduction to the Design and Behavior of Bolted Joints. • Industrial Fasteners Institute, Fastener Standards. Industrial Fasteners
Institute. • Geoffrey L. Kulak, John W. Fisher, John H. A. Struik, Guide to Design Criteria
for Bolted and Riveted Joints. • Geoffrey L. Kulak, High Strength Bolts: A Primer for Structural Engineers,
AISC. • PCB Load & Torque Knowledge Library • Understanding Torque-Angle Signatures of Bolted Joints • Fundamentals of Torque-Tension and Coefficient of Friction Testing • Engineering Fundamentals of Threaded Fastener Design and Analysis
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Thank You! • Brent • Christina • Nancy • Tom
Thank You
Questions?
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
Individual Webinar Registrants PDH Certificates Within 2 business days… • You will receive an email on how to report attendance from:
[email protected]. • Be on the lookout: Check your spam filter! Check your junk folder! • Completely fill out online form. Don’t forget to check the boxes next to each attendee’s name!
Individual Webinar Registrants PDH Certificates Within 2 business days… • Reporting site (URL will be provided in the forthcoming email). • Username: Same as AISC website username. • Password: Same as AISC website password.
Copyright © 2016 American Institute of Steel Construction
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AISC Night School November 1, 2016
Fundamentals of Bolting and Welding Bolting Pt 4: Beyond the Bolts
8-Session Registrants PDH Certificates One certificate will be issued at the conclusion of all 8 sessions.
8-Session Registrants Quizzes Access to the quiz: Information for accessing the quiz will be emailed to you by Thursday. It will contain a link to access the quiz. EMAIL COMES FROM
[email protected] Quiz and Attendance records: Posted Tuesday mornings. www.aisc.org/nightschool - click on Current Course Details. Reasons for quiz: •EEU – must take all quizzes and final to receive EEU •PDHS – If you watch a recorded session you must take quiz for PDHs. •REINFORCEMENT – Reinforce what you learned tonight. Get more out of the course. NOTE: If you attend the live presentation, you do not have to take the quizzes to receive PDHs.
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