ACI 318-25

ADVANCED BOLT DESIGN ANCHORING TO CONCRETE

ACI 318-25 ADVANCED DESIGN OF ANCHOR BOLTS TO CONCRETE

PROLOGUE

CHAPTER 1 ANCHORING IN HISTORY
1.1 Introduction
1.2 Need for connections
1.3 Connecting joints, points of agreement
1.4 Material of origin of the anchor
1.5 Behavior of iron
1.6 Genesis of use of iron as an anchoring element
1.7 Wrought iron as an

1.8 Damage to Restorations by Imitation of Old
Techniques 1.9 Horizontal
Connection Anchors 1.10 Vertical

Connection Anchors CHAPTER 2 INTRODUCTION TO ANCHOR
BOLTS 2.1 Introduction
2.2 Definition of a System
2.3 Anchor
System 2.4 Components of an Anchor System
2.5 Resilient Capacity of an Anchor
System 2.6 Ductile
anchor system 2.7 Ductility
2.8 Ductility of a steel-concrete
anchor or connection system 2.9 Failure or collapse in non-ductile
connections 2.10 Definition of anchor bolt
2.11 Types of anchor systems
2.12 Pre-installed or cast-in place
anchor system 2.13 Types of pre-installed bolts
2.19 Anchor bolts with head or nut
2.15 Anchor bolts with hook types J or L
2.16 Anchor bolts of rebar
2.17 Configuration of pre-installed anchor bolts
2.18 Arrangement of pre-installed anchor bolts
2.18.1 Base plate supported on anchor bolts with nuts
2.18.2 Base plate rested directly on concrete or grout
2.19 Use of anchor sleeves
2.20 Use of welded
metal sleeves 2.21 Sleeve length
2.22 Sleeve dimensions
2.23 Special considerations when using sleeves
2.24 Post-installed
anchorage system 2.24.1 Expansion
anchor system 2.24.2 Lowered or cut anchor system
2.24.3 Adhesive anchor system
2.24.4 Cementitious

2.24.5 Polymer Grout Anchors
2.25 What is a Headed Anchor Bolt?
2.26 What is an asparagus?
2.27 What is a stud bolt with welded head or stud bolt?
2.28 Advantages of Anchor Bolts
2.29 Disadvantages of Stud Bolts
2.30 Disadvantages of Anchor Bolts with J or L
Hooks 2.31 Galvanizing Process in a Bolt

CHAPTER 3 SPECIFICATIONS OF ANCHOR
BOLTS 3.1 Introduction
3.2 ASTM F1554
3.3 ASTM A307
3.4 ASTM A449
3.5 ASTM A354
3.6 ASTM F593

CHAPTER 4 GENERAL ANCHOR
BOLT REQUIREMENTS 4.1 Introduction
4.2 Strength reduction factors, Ø
4.3 Lightweight concrete in Anchor Systems
4.4 Maximum Concrete
Strengths 4.5 Criteria for the Selection of an Anchor Bolt System
4.6 Criteria for the Design of an Anchor Bolt System
4.7 Requirements for Anchor Systems That Should Be Pre-Tested
4.8 Maximum Diameter of Anchor Bolts
4.9 Corrosion Criteria for Selecting an Anchor Bolt System
4.9.1 Types of Corrosion in Anchor Bolts
4.9.2 Options to Prevent Corrosion
4.10 Fill Grouts or Grouts

CHAPTER 5 TOUGH CAPACITIES OF ANCHOR BOLTS TO CONCRETE
5.1 Introduction
5.2 Scope of the Code CHAPTER 17 OF ACI 318-19
5.3 Application of the Code
5.4 Non-application of the Code
5.5 Behavior and classification criteria of anchor bolts according to ACI 318-19
5.5.1 Pre-installed bolts with hot-forged
head 5.5.2 Bolts with J- or L-shaped
hooks 5.5.3 Post-installed expansion and anchor bolts with over-drilling at its base
5.5.4 Adhesive anchor bolts
5.5.5 Design of anchor bolts to concrete by effects
5.6 Anchor bolt design overview
5.7 Increased design
loads 5.8 Seismic behavior of anchor bolts
5.8.1 Location of anchor bolts in regions close to 5.8.2 Special Cases of Location of Anchor Bolts
in Regions near plastic joints
5 .8.3 Tensile strength of the anchor bolt
under seismic actions 5.9 Ductile behavior and design of an anchor
5.10 Tensile behavior of a ductile connection of an anchor peno
5.11 Tensile behavior of a ductile connection of an anchor system
5.12 Requirements for a seismically
satisfactory tensile anchor system 5.12.1 Resistance
aspect 5.12.2 Ductility aspect of the anchor
bolt system 5.12.3. Aspect resistance and non-creep of the attachments
5.13 General aspects related to the seismic behavior of an anchor to Traction
5.19 Behavior of a Ductile Connection to Cut of an Anchor Bolt
5.15 Shear transfer in single-anchor connections
5.16 Behavior of a ductile cut-off connection of an anchor system
5.17 Requirements for a seismically
satisfactory cut-off anchor system 5.17.1 Ductility aspect of the anchor system
5.17.2 Strength and non-creep aspect of the attachments
5.17.3 Resistant
capacity aspect 5.18 Behavior of a Ductile Connection of an Insulated Anchor Bolt
5.19 Behavior of a ductile connection of a tensile anchoring system and
Simultaneous Shear 5.20 Reinforcing Steel in Anchors
5.21 Design of Anchor Reforcing Steel
5.22 Supplementary Reinforcing Steel
5.23 Justification of Anchor Reinforcement Steel
5.24 Steel Area of Tensile
Anchor Reinforcement 5.25 Anchor Area of Steel Area of Tensile
Anchor Reinforcement 5.26 Design Methods of Anchor Reinforcement
Steel 5.27 Shear
Anchor Reinforcement Steel 5.28 Steel Area of Shear
Anchor Reinforcement 5.29 Development Length of Steel Area of Shear
Anchor Reinforcement 5.30 Ductile
Design Philosophy 5.30.1 Ductility of an Anchor
5.30.2 Toughness of an Anchor
5.31 Requirements and Premises for a Ductile
Design 5.32 Mechanisms for Achieving Ductile
Design 5.33 Critical Situations Requiring Ductile

Anchor DesignCHAPTER 6 DESIGN OF CONCRETE
ANCHOR BOLTS 6.1 Introduction
6.2 Edge Distances, Spacings, and Thicknesses Required to Avoid Corrosion Failures or Collapses
6.3 Values Other Than Approximates Referred to in ACI Code 318-19
6.4 Separation Distances from Anchor Bolts to Concrete
Edges 6.4.1 Minimum Separation Distances from Bolt Edges
6.4.2 Minimum Clearance Distances to Bolt Edges of anchorage for minor loads that do not cause failure or collapse and are not subjected to Torque
6.5 Anchor bolt embedding or embedding length
6.6 Critical cac edge distances for anchor bolts
that are not pre-installed 6.7 Areas of the pull-out
cone 6.7.1 Pull-out
cone 6.7.1.a Area of concrete per projected traction for a single tensile anchor, ANco
6.7.1.b Area of concrete per projected traction for a group of anchors, ANc
6.7.1.c Variations in the area of sprayed tensile concrete, ANc
6.7.2 Shear
pull-out cone 6.7.2.a Shear concrete area designed for a single anchor, AVco
6.7.2.b Concrete area per cut projected for a group of anchors, AVc
6.7.2.c Variations in the area of Sprayed Shear Concrete for a Group of Anchors, AVc
6.8 Types of Anchor Bolt Failures or Collapses
6.9 Types of Tensile or Stress
Collapses or Failures 6.10 Tensile Collapse in Steel
6.10.1 Steel Strength of an Anchor Bolt
6.11 Collapse or breakout in tension
6.11.1 Resistance capacity of concrete to the pullout of concrete
6.12 Collapse or failure due to pullout of steel
6.13 Collapse or failure due to lateral detachment of concrete in an anchor with head or side-face blowout
6.19 Tensile capacity due to adhesion in anchor traction adhered
6.15 Types of collapses or failures due to shear
stresses 6.16 Collapse or failure in steel due to shear
stresses 6.17 Collapse or failure in steel due to shear stresses or cut breakage in the concrete or "break"
6.18 Collapse or failure due to shear stresses or breakage due to detachment of the concrete pryout strength
6.19 Effective depth of embedding or embedding, hef
6.19.1 Effective depth of embedding or embedding embedding, HEF on pre-installed anchors or " cast-in-anchor"
6.19.2 Effective embedment or depth of embedding, HEF in adhered
post-installed anchors 6.20 Interaction of tensile and shear forces
6.20.1 Interaction diagram of tensile forces and
6.20.2 Simplifying the Interaction Diagram
6.20.3 Simplification of values for the Tri-linear

traction-cut interaction CHAPTER 7 CONCRETE ANCHOR
BOLT DESIGN EXERCISES 7.1 Exercise 7.1 Pre-installed type anchor bolt design exercise Subject to centered tensile load (no cut, no momentum)

7.1.1 Worksheet - 7.1 Exercise 1
7.2 Exercise 7.2 Pre-Installed Type Anchor Bolt Design Exercise Subject to centered tensile load (no cut, no momentum).

7.2.1 Spreadsheet 7.2 - Exercise 7.2
7.3 Exercise 7.3 Comparative analysis with respect to resistant capacities of the bolt of results obtained from previous years 7.1 and 7.2.
7.4 Exercise 7.4 Pre-Installed Type Anchor Bolt Design Exercise subject to centered shear load (no traction, no momentum). The depth of embedment is small.

7.4.1 Spreadsheet 7.4 - Exercise 7.4
7.5 Exercise 7.5 Pre-Installed Type Anchor Bolt Design Exercise subject to centered shear load (no traction, no momentum) The depth of embedment is large.

7.5.1 Spreadsheet 7.5 - Exercise 7.5
7.6 Exercise 7.6 Ductile
Anchor Design Exercise 7.7 Exercise 7.7 Pull and Cut Exercise on a Bolt System
7.8 Exercise 7.8 Pull and Cut Exercise on a Bolt System on a Bolt System
concrete slab 7.9 Exercise 7.9 Pulling and cutting exercise on a bolt system in a concrete beams restricted by distances to edges on three sides. The Base plates are located at the end of the beam.
7.10 Exercise 7.10 Pulling and Cutting Exercise on a Bolt System in a concrete beams restricted by distances to edges on two sides. The Base plates are located in the middle of the beam, see figures.
7.11 Exercise 7.11 Bending and Cutting Moment Exercise in a Bolt System on a concrete column in a beam-column node constrained on four sides. The metal plate is located inside the beam-column node, see figures.
7.12 Exercise 7.12 Bending and Cutting Moment Exercise in a Bolt System on a concrete column in a beam-to-column node restricted on three sides. The metal plate is located inside the beam-column node, see figures.

CHAPTER 8 ANCHOR BOLT DESIGN KNOWLEDGE ASSESSMENTS
8.1 Exam 1
8.1.1 Solution Exam 1
8.2 Exam 2
8.2.1 Solution Exam 2
8.3 Exam 3
8.3.1 Solution Exam 3
8.4 Exam 4