ACI 350 2020 with2022Errata
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ACI CODE-350.3-20: Code Requirements for Seismic Analysis and Design of Liquid-Containing Concrete Structures (ACI 350.3-20) and Commentary – with ERRATA as of January 20, 2022
| Published By | Publication Date | Number of Pages |
| ACI | 2020 |
This Code prescribes procedures for the seismic analysis and design of liquid-containing concrete structures. These procedures address the loading side of seismic design and are intended to complement Section 1.1.9 and Chapter 13 of ACI 350-20. Keywords: circular tanks; concrete tanks; convective component; earthquake resistance; environmental concrete structures; impulsive component; liquid-containing structures; rectangular tanks; seismic resistance; sloshing; storage tanks.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 3 | TITLE PAGE |
| 4 | PREFACE |
| 5 | INTRODUCTION GENERAL COMMENTARY |
| 16 | 1.2—Contract documents |
| 18 | 1.3—Inspection |
| 20 | 1.4—Approval of special systems of design or construction |
| 21 | 2.1—Code notation |
| 40 | 2.2—Definitions |
| 51 | Chapter 3—materials 3.1—Tests of materials 3.2—Cementitious materials |
| 67 | _Hlk40101948 _Hlk40102981 _Hlk40102594 |
| 68 | _Hlk40102449 _Hlk40102827 _Hlk40102743 |
| 69 | _Hlk40100663 _Hlk40104596 |
| 70 | _Hlk40101714 _Hlk40104039 |
| 83 | _Hlk40248036 |
| 89 | _Hlk40251809 |
| 103 | 5.3—Proportioning concrete on the basis of field experience or trial mixtures, or both |
| 108 | 5.4—Proportioning shotcrete on the basis of field experience or trial mixtures, or both |
| 112 | 5.5—Average compressive strength reduction for concrete |
| 113 | 5.7—Evaluation and acceptance of concrete and shotcrete 5.6—Average compressive strength reduction for shotcrete |
| 119 | 5.8—Preparation of equipment and place of deposit |
| 120 | 5.9—Mixing |
| 121 | 5.11—Depositing of concrete 5.10—Conveying concrete and wet-mix shotcrete |
| 122 | 5.13—Curing 5.12—Application of shotcrete |
| 124 | 5.15—Hot weather requirements 5.14—Cold weather requirements |
| 125 | Chapter 6—formwork and embedments 6.1—Design of formwork 6.2—Removal of forms, shores, and reshoring |
| 127 | 6.3—Embedments in concrete and shotcrete _Hlk40334898 |
| 129 | Chapter 7—joints 7.1—Jointing |
| 134 | 7.2—Construction joints |
| 135 | 7.3—Crack-inducing joints |
| 136 | 7.4—Movement joints |
| 137 | 7.5—Joint accessories |
| 143 | Chapter 8—analysis and design – general considerations 8.1—Design methods 8.2—Loading |
| 144 | 8.3—Methods of analysis |
| 145 | 8.4—Redistribution of moments in continuous flexural members |
| 146 | _Hlk40347091 |
| 147 | 8.6—Lightweight concrete 8.5—Modulus of elasticity |
| 148 | 8.8—Effective stiffness to determine lateral deflections 8.7—Stiffness |
| 149 | 8.9—Span length _Hlk40345344 |
| 150 | 8.11—Arrangement of live load 8.10—Columns |
| 151 | 8.13—Joist construction 8.12—T-beam construction |
| 152 | 8.14—Separate floor finish _Hlk40345557 |
| 153 | Chapter 9—strength and serviceability requirements 9.1—General 9.2—Required strength |
| 158 | 9.3—Design strength |
| 162 | 9.5—Control of deflections 9.4—Design strength for reinforcement |
| 169 | Chapter 10—flexure and axial loads 10.1—Scope 10.2—Design assumptions |
| 171 | 10.3—General principles and requirements |
| 173 | 10.4—Distance between lateral supports of flexural members |
| 174 | 10.6—Distribution of flexural reinforcement 10.5—Minimum reinforcement of flexural members |
| 178 | 10.7—Deep beams |
| 179 | 10.9—Limits for reinforcement of compression members 10.8—Design dimensions for compression members |
| 181 | 10.10—Slenderness effects in compression members |
| 182 | _Hlk40439470 |
| 188 | 10.12—Transmission of column loads through floor system 10.11—Axially loaded members supporting slab system |
| 189 | 10.13—Composite compression members |
| 191 | 10.14—Bearing strength |
| 193 | Chapter 11—shear and torsion 11.1—Shear strength |
| 196 | 11.2—Shear strength provided by concrete for nonprestressed members |
| 198 | 11.3—Shear strength provided by concrete for prestressed members |
| 201 | 11.4—Shear strength provided by shear reinforcement |
| 206 | 11.5—Design for torsion |
| 216 | 11.6—Shear-friction |
| 220 | 11.8—Provisions for brackets and corbels 11.7—Deep beams |
| 224 | 11.9—Provisions for walls |
| 226 | 11.11—Provisions for slabs and footings 11.10—Transfer of moments to columns |
| 239 | CHAPTER 12—REINFORCEMENT—DETAILS, DEVELOPMENT, AND SPLICES 12.1—Standard hooks 12.2—Minimum bend diameters |
| 240 | 12.4—Surface conditions of reinforcement 12.3—Bending |
| 241 | 12.5—Placing reinforcement |
| 242 | 12.6—Spacing limits for reinforcement |
| 243 | 12.7—Concrete protection for reinforcement |
| 248 | 12.8—Development MTBlankEqn |
| 268 | 12.9—Splices |
| 276 | 12.10—Lateral reinforcement |
| 280 | 12.12—Connections 12.11—Reinforcement details for columns |
| 281 | 12.13—Shrinkage and temperature reinforcement |
| 284 | _Hlk50285720 |
| 288 | 12.14—Requirements for structural integrity |
| 291 | CHAPTER 13—earthquake-resistant StructureS 13.1—General requirements |
| 298 | 13.3—Intermediate moment frames 13.2—Ordinary moment frames |
| 304 | 13.5—Flexural members of special moment frames 13.4—Intermediate precast structural walls |
| 311 | 13.6—Special moment frame members subjected to bending and axial load |
| 315 | 13.7—Joints of special moment frames |
| 317 | MTBlankEqn |
| 318 | 13.8—Special moment frames constructed using precast concrete |
| 320 | 13.9—Special structural walls and coupling beams |
| 329 | 13.11—Structural diaphragms and trusses 13.10—Special structural walls constructed using precast concrete |
| 334 | 13.12—Foundations |
| 336 | 13.13—Members not designated as part of the seismic-force-resisting system |
| 339 | CHAPTER 14—TWO-WAY SLAB SYSTEMS 14.1—Scope |
| 340 | 14.3—Slab reinforcement 14.2—General |
| 344 | 14.4—Openings in slab systems |
| 345 | 14.5—Design procedures |
| 348 | 14.6—Direct design method |
| 354 | 14.7—Equivalent frame method _Hlk50836465 |
| 359 | CHAPTER 15—WALLS 15.1—Scope 15.2—General 15.3—Walls prestressed circumferentially by wrapping with high-strength steel wire or strand |
| 362 | 15.4—Minimum reinforcement |
| 363 | 15.6—Empirical Design Method 15.5—Walls designed as compression members |
| 365 | 15.8—Walls as grade beams 15.7—Minimum wall thickness |
| 367 | CHAPTER 16—FOOTINGS 16.1—Scope 16.2—Loads and reactions |
| 368 | 16.5—Shear in footings 16.4—Moment in footings 16.3—Footings supporting circular or regular polygon-shaped columns or pedestals |
| 370 | 16.8—Transfer of force at base of column, wall, or reinforced pedestal 16.7—Minimum footing depth 16.6—Development of reinforcement in footings |
| 372 | 16.10—Combined footings and mats 16.9—Sloped or stepped footings |
| 375 | CHAPTER 17—PRECAST CONCRETE 17.1—Scope 17.2—General _Hlk42001760 |
| 376 | 17.3—Distribution of forces among members |
| 377 | 17.5—Structural integrity 17.4—Member design _Hlk42002518 |
| 379 | 17.6—Connection and bearing design |
| 381 | 17.9—Handling 17.8—Marking and identification 17.7—Items embedded after concrete placement MTBlankEqn |
| 382 | 17.10—Strength evaluation of precast construction |
| 383 | CHAPTER 18—COMPOSITE CONCRETE FLEXURAL MEMBERS 18.1—Scope 18.2—General |
| 384 | 18.5—Horizontal shear strength 18.4—Vertical shear strength 18.3—Shoring |
| 385 | 18.6—Ties for horizontal shear |
| 387 | CHAPTER 19—PRESTRESSED CONCRETE 19.1—Scope |
| 388 | 19.2—General |
| 389 | 19.3—Design assumptions |
| 391 | 19.4—Serviceability requirements—flexural members |
| 394 | 19.6—Loss of prestress 19.5—Permissible stresses in prestressing steel |
| 396 | 19.7—Flexural strength |
| 397 | 19.8—Limits for reinforcement of flexural members |
| 398 | 19.9—Minimum bonded reinforcement |
| 400 | 19.10—Statically indeterminate structures |
| 401 | 19.11—Compression members—combined flexure and axial loads |
| 403 | 19.12—Slab systems |
| 405 | 19.13—Post-tensioned tendon anchorage zones |
| 410 | 19.14—Design of anchorage zones for monostrand or single 5/8 in. diameter bar tendons |
| 411 | 19.15—Design of anchorage zones for multistrand tendons |
| 412 | 19.16—Corrosion protection for unbonded single-strand prestressing tendons |
| 414 | 19.18—Grout for bonded tendons 19.17—Post-tensioning ducts |
| 416 | 19.20—Application and measurement of prestressing force 19.19—Protection for prestressing steel |
| 417 | 19.21—Post-tensioning anchorages and couplers |
| 418 | 19.22—External post-tensioning |
| 419 | CHAPTER 20—SHELLS AND FOLDED PLATE MEMBERS 20.1—Scope and definitions |
| 421 | 20.2—Analysis and design |
| 424 | MTBlankEqn |
| 426 | 20.4—Shell reinforcement 20.3—Design strength of materials |
| 428 | 20.5—Construction |
| 429 | CHAPTER 21—LIQUID-CONTAINING GROUND-SUPPORTED SLABS 21.1—Scope |
| 430 | 21.2—Slab support |
| 431 | 21.3—Slab thickness |
| 432 | 21.5—Joints 21.4—Reinforcement |
| 433 | 21.7—Curing 21.6—Hydrostatic uplift |
| 435 | CHAPTER 22—STRENGTH EVALUATION AND CONDITION ASSESSMENT OF STRUCTURES 22.1—General |
| 437 | 22.2—Determination of required dimensions and material properties |
| 438 | 22.3—Condition survey of structures |
| 439 | 22.4—Field and laboratory testing |
| 440 | 22.6—Evaluation report 22.5—Tightness testing |
| 441 | 22.7—Load testing |
| 443 | APPENDIX A—ALTERNATE DESIGN METHOD A.1—Scope |
| 444 | A.3—Allowable stresses at service loads A.2—General |
| 445 | A.3.3—Distribution of flexural reinforcement |
| 446 | A.5—Flexure A.4—Development and splices of reinforcement |
| 447 | A.7—Shear and torsion A.6—Compression members with or without flexure |
| 448 | A.7.4—Shear stress carried by concrete |
| 449 | A.7.5—Shear stress carried by shear reinforcement |
| 451 | A.7.7—Special provisions for slabs and footings A.7.6—Shear-friction |
| 452 | A.7.9—Composite concrete flexural members A.7.8—Special provisions for other members |
| 453 | APPENDIX B—STRUT-AND-TIE MODELS B.1—Definitions |
| 459 | B.2—Strut-and-tie model design procedure |
| 461 | B.3—Strength of struts |
| 464 | B.4—Strength of ties |
| 466 | B.5—Strength of nodal zones |
| 469 | APPENDIX C—ALTERNATIVE PROVISIONS FOR REINFORCED AND PRESTRESSED CONCRETE FLEXURAL AND COMPRESSION MEMBERS C.1—Scope C.8.4—Redistribution of moments in continuous nonprestressed flexural members MTBlankEqn |
| 471 | C.19.1—Scope C.10.3—General principles and requirements |
| 473 | C.19.10—Statically indeterminate structures C.19.8—Limits for reinforcement of flexural members |
| 477 | APPENDIX D—ALTERNATIVE LOAD FACTORS, STRENGTH REDUCTION FACTORS, AND DISTRIBUTION OF FLEXURAL REINFORCEMENT D.1—General D.9.2—Required strength |
| 479 | D.9.3—Design strength |
| 482 | D.10.6—Distribution of flexural reinforcement in beams and one-way slabs |
| 495 | _Hlk42507128 |
| 502 | _Hlk45611110 |
| 507 | MTBlankEqn |
| 547 | _Hlk42001986 |
