Table of Contents
PREFACE, p. 3
CHAPTER 1—GENERAL, p. 4
1.1—Scope , p. 4
1.2—General, p. 4
1.3—Purpose, p. 4
1.4—Applicability, p. 5
1.5—Interpretation, p. 5
1.6—Building official, p. 6
1.7—Licensed design professional, p. 6
1.8—Construction documents and design records, p. 7
1.9—Testing and inspection, p. 7
CHAPTER 2—NOTATION AND DEFINITIONS, p. 8
2.1—Notation, p. 8
2.2—Definitions, p. 13
CHAPTER 3—REFERENCED STANDARDS, p. 14
CHAPTER 4—STRUCTURAL SYSTEM REQUIREMENTS, p. 15
4.1—Materials, p. 15
4.2—Design loads, p. 15
4.3—Structural system, p. 15
CHAPTER 5—CONCRETE: MATERIALS, DESIGN, AND DURABILITY REQUIREMENTS, p. 16
5.1—General, p. 16
5.2—Materials, p. 16
5.3—Concrete properties for design, p. 17
5.4—Durability requirements, p. 18
CHAPTER 6—REINFORCING STEEL: MATERIALS, DESIGN, AND DURABILITY REQUIREMENTS, p. 19
6.1—General, p. 19
6.2—Materials, p. 19
6.3—Steel properties for design, p. 19
6.4—Durability requirements, p. 19
CHAPTER 7—LOADS, p. 20
7.1—General, p. 20
7.2—Dead load, p. 20
7.3—Temperature gradient load, p. 20
7.4—Wind load, p. 23
7.5—Earthquake load, p. 29
7.6—Load combinations, p. 33
CHAPTER 8—DESIGN OF HORIZONTAL CROSS SECTIONS, p. 35
8.1—General, p. 35
8.2—Design limits, p. 36
8.3—Required strength, p. 38
8.4—Design strength, p. 38
8.5—Reinforcement limits, p. 39
8.6—Reinforcement detailing, p. 40
CHAPTER 9—DESIGN OF VERTICAL CROSS SECTIONS FOR CIRCUMFERENTIAL RING MOMENTS, p. 42
9.1—General, p. 42
9.2—Design limits, p. 42
9.3—Required strength, p. 42
9.4—Design strength, p. 42
9.5—Reinforcement limits, p. 43
9.6—Reinforcement detailing, p. 43
CHAPTER 10—OPENING DETAILS, p. 45
10.1—General, p. 45
10.2—Minimum wall thickness at openings, p. 45
10.3—Vertical reinforcement at openings, p. 45
10.4—Circumferential reinforcement at openings, p. 46
10.5—Corner reinforcement at openings, p. 47
10.6—Seismic detailing, p. 48
CHAPTER 11—FOUNDATION, p. 49
11.1—Foundation geotechnical capacity, p. 49
11.2—Foundation structural design, p. 49
11.3—Reinforcement detailing, p. 50
11.4—Mass concrete, p. 50
CHAPTER 12—CONSTRUCTION REQUIREMENTS, p. 51
12.1—General, p. 51
12.2—Concrete strength, p. 51
12.3—Concrete strength tests, p. 51
12.4—Formwork, p. 51
12.5—Concrete placement, p. 52
12.6—Concrete curing, p. 52
12.7—Reinforcement placement, p. 52
12.8—Construction tolerances, p. 53
12.9—Precast erection, p. 53
COMMENTARY REFERENCES, p. 54
APPENDIX A—HORIZONTAL CROSS-SECTION STRENGTH FOR CIRCULAR CHIMNEYS BY MODIFIED STRESS BLOCK METHOD, p. 56
A.1—Notation, p. 56
A.2—Procedure for computing combined nominal axial and flexural strength, p. 56
A.3—Stress block modification factor, p. 58
A.4—Derivation of equations, p. 58
APPENDIX B—HORIZONTAL CROSS-SECTION STRENGTH FOR CIRCULAR CHIMNEYS BY STRESS-STRAIN RELATIONSHIP INTEGRATION METHOD, p. 62
B.1—Notation, p. 62
B.2—Procedure for computing combined nominal axial and flexural strength, p. 62
B.3—Derivation of equations, p. 63
APPENDIX C—TEMPERATURE GRADIENTS FOR CIRCULAR CHIMNEYS, p. 67
C.1—General, p. 67
C.2—Notation, p. 67
C.3—Unlined chimney, p. 67
C.4—Chimney with lining material applied directly to the inside concrete surface, p. 67
C.5—Chimney with insulation completely filling the space between the liner and the chimney wall (no annular airspace), p. 68
C.6—Chimney with unventilated air space between liner and chimney wall, p. 68
C.7—Chimney with ventilated air space between liner and chimney wall, p. 69
APPENDIX D—THERMAL STRESSES FOR CIRCULAR CHIMNEYS, p. 70
D.1—General, p. 70
D.2—Notation, p. 70
D.3—Vertical thermal stresses, p. 70
D.4—Horizontal thermal stresses, p. 70
APPENDIX E—CRACKING MOMENT, p. 72
E.1—Notation, p. 72
E.2—Cracking moment calculation, p. 72
APPENDIX F—REVISION HISTORY, p. 73