ACI 307 2023

$48.21

ACI CODE-307-23: Requirements for Reinforced Concrete Chimneys Code and Commentary

Published By	Publication Date	Number of Pages
ACI	2023	79

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Category: ACI

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Description

This Code provides material, design, and detailing requirements for cast-in-place and precast reinforced concrete chimneys. It sets forth minimum loadings for design and contains methods for determining the concrete and reinforcement required to obtain the strength required by the loadings. The methods of analysis apply primarily to circular chimney walls, but guidance is included for applying the general principles to noncircular chimney walls. Keywords: across-wind load; construction requirements; earthquake load; flexural strength; load combinations; reinforced concrete; reinforced concrete chimneys; structural design; thermal load; vortex shedding; windload.

PDF Catalog

PDF Pages	PDF Title
3	TITLE PAGE
5	PREFACE
6	CHAPTER 1—GENERAL 1.1—Scope 1.2—General 1.3—Purpose
7	1.4—Applicability 1.5—Interpretation
8	1.6—Building official 1.7—Licensed design professional
9	1.8—Construction documents and design records 1.9—Testing and inspection
10	CHAPTER 2—NOTATION AND DEFINITIONS 2.1—Notation
15	2.2—Definitions
16	CHAPTER 3—REFERENCED STANDARDS
17	CHAPTER 4—STRUCTURAL SYSTEMREQUIREMENTS 4.1—Materials 4.2—Design loads 4.3—Structural system
18	CHAPTER 5—CONCRETE: MATERIALS, DESIGN,AND DURABILITY REQUIREMENTS 5.1—General 5.2—Materials
19	5.3—Concrete properties for design
20	5.4—Durability requirements
21	CHAPTER 6—REINFORCING STEEL: MATERIALS,DESIGN, AND DURABILITY REQUIREMENTS 6.1—General 6.2—Materials 6.3—Steel properties for design 6.4—Durability requirements
22	CHAPTER 7—LOADS 7.1—General 7.2—Dead load 7.3—Temperature gradient load
25	7.4—Wind load
31	7.5—Earthquake load
35	7.6—Load combinations
37	CHAPTER 8—DESIGN OF HORIZONTAL CROSSSECTIONS 8.1—General
38	8.2—Design limits
40	8.3—Required strength 8.4—Design strength
41	8.5—Reinforcement limits
42	8.6—Reinforcement detailing
44	CHAPTER 9—DESIGN OF VERTICAL CROSSSECTIONS FOR CIRCUMFERENTIAL RINGMOMENTS 9.1—General 9.2—Design limits 9.3—Required strength 9.4—Design strength
45	9.5—Reinforcement limits 9.6—Reinforcement detailing
47	CHAPTER 10—OPENING DETAILS 10.1—General 10.2—Minimum wall thickness at openings 10.3—Vertical reinforcement at openings
48	10.4—Circumferential reinforcement at openings
49	10.5—Corner reinforcement at openings
50	10.6—Seismic detailing
51	CHAPTER 11—FOUNDATION 11.1—Foundation geotechnical capacity 11.2—Foundation structural design
52	11.3—Reinforcement detailing 11.4—Mass concrete
53	CHAPTER 12—CONSTRUCTION REQUIREMENTS 12.1—General 12.2—Concrete strength 12.3—Concrete strength tests 12.4—Formwork
54	12.5—Concrete placement 12.6—Concrete curing 12.7—Reinforcement placement
55	12.8—Construction tolerances 12.9—Precast erection
56	COMMENTARY REFERENCES
58	APPENDIX A—HORIZONTAL CROSS-SECTIONSTRENGTH FOR CIRCULAR CHIMNEYS BYMODIFIED STRESS BLOCK METHOD
64	APPENDIX B—HORIZONTAL CROSS-SECTIONSTRENGTH FOR CIRCULAR CHIMNEYSBY STRESS-STRAIN RELATIONSHIPINTEGRATION METHOD
69	APPENDIX C—TEMPERATURE GRADIENTS FORCIRCULAR CHIMNEYS
72	APPENDIX D—THERMAL STRESSES FORCIRCULAR CHIMNEYS
74	APPENDIX E—CRACKING MOMENT
75	APPENDIX F—REVISION HISTORY