Table of Contents
PREFACE TO ACI/PCI CODE-319-25, p. 5
INTRODUCTION, p. 6
CHAPTER 1—GENERAL, p. 7
1.1—Scope of ACI/PCI CODE-319 7
1.2—General 7
1.3—Purpose 8
1.4—Applicability 8
1.5—Interpretation 9
1.6—Building official 10
1.7—Licensed design professional 11
1.8—Construction documents and design records 11
1.9—Testing and inspection 12
1.10—Approval of special systems of design, construction, or alternative construction materials 12
CHAPTER 2—NOTATION AND TERMINOLOGY, p. 13
2.1—Scope 13
2.2—Notation 13
2.3—Terminology 22
CHAPTER 3—REFERENCED STANDARDS, p. 34
3.1—Scope 34
3.2—Referenced standards 34
CHAPTER 4—STRUCTURAL SYSTEM REQUIREMENTS, p. 37
4.1—Scope 37
4.2—Materials 37
4.3—Design loads 37
4.4—Structural system and load paths 37
4.5—Structural analysis 43
4.6—Strength 43
4.7—Serviceability 44
4.8—Durability 44
4.9—Sustainability and resilience 45
4.10—Structural integrity 45
4.11—Fire resistance 45
4.12—Requirements for specific types of construction 45
4.13—Construction and inspection 47
4.14—Strength evaluation of existing structures 47
CHAPTER 5—LOADS, p. 48
5.1—Scope 48
5.2—General—See ACI CODE-318 48
5.3—Load factors and combinations—See ACI CODE-318 48
CHAPTER 6—STRUCTURAL ANALYSIS, p. 49
6.1—Scope 49
6.2—General 49
6.3—Modeling assumptions 49
6.4—Arrangement of live load—See ACI CODE-318 50
6.5—Simplified method of analysis for nonprestressed continuous beams and one-way slabs—See ACI CODE-318 50
6.6—Linear elastic first-order analysis—See ACI CODE-318 50
6.7—Linear elastic second-order analysis—See ACI CODE-318 50
6.8—Inelastic analysis—See ACI CODE-318 50
6.9—Acceptability of finite element analysis—See ACI CODE-318 50
CHAPTER 7—ONE-WAY SLABS, p. 51
7.1—Scope 51
7.2—General 51
7.3—Design limits 51
7.4—Required strength 53
7.5—Design strength 53
7.6—Reinforcement limits 54
7.7—Reinforcement detailing 55
CHAPTER 8—TWO-WAY SLABS, p. 58
8.1—Scope 58
CHAPTER 9—BEAMS, p. 59
9.1—Scope 59
9.2—General 59
9.3—Design limits 60
9.4—Required strength 62
9.5—Design strength 64
9.6—Reinforcement limits 73
9.7—Reinforcement detailing 76
9.8—Nonprestressed one-way joist systems—See ACI CODE-318 84
9.9—Deep beams 84
CHAPTER 10—COLUMNS, p. 88
10.1—Scope 88
10.2—General 88
10.3—Design limits 88
10.4—Required strength 89
10.5—Design strength 90
10.6—Reinforcement limits 90
10.7—Reinforcement detailing 91
CHAPTER 11—WALLS, p. 97
11.1—Scope 97
11.2—General 97
11.3—Design limits 98
11.4—Required strength 98
11.5—Design strength 99
11.6—Reinforcement limits 102
11.7—Reinforcement detailing 103
11.8—Alternative method for out-of-plane slender wall analysis 104
CHAPTER 12—DIAPHRAGMS, p. 107
12.1—Scope 107
12.2—General 108
12.3—Design limits 109
12.4—Required strength 109
12.5—Design strength 112
12.6—Reinforcement limits 118
12.7—Reinforcement detailing 118
CHAPTER 13—FOUNDATIONS, p. 120
13.1—Scope 120
13.2—General 120
13.3—Shallow foundations—See ACI CODE-318 120
13.4—Deep foundations 120
CHAPTER 14—PLAIN CONCRETE, p. 124
14.1—Scope 124
CHAPTER 15—CAST-IN-PLACE JOINTS, p. 125
15.1—Scope 125
CHAPTER 16—CONNECTIONS BETWEEN MEMBERS, p. 126
16.1—Scope 126
16.2—Connections of members 126
16.3—Connections to foundations 131
16.4—Horizontal shear transfer in composite concrete flexural members 133
16.5—Brackets and corbels 135
16.6—Dapped beam ends 140
16.7—Notched beam ends 148
16.8—Bearing regions 151
CHAPTER 17—ANCHORING TO CONCRETE, p. 157
17.1—Scope 157
CHAPTER 18—EARTHQUAKE-RESISTANT STRUCTURES, p. 158
18.1—Scope 158
18.2—General 159
18.3—Ordinary moment frames—See ACI CODE-318 161
18.4—Intermediate moment frames—See ACI CODE-318 161
18.5—Intermediate precast structural walls 161
18.6—Beams of special moment frames—See ACI CODE-318 165
18.7—Columns of special moment frames—See ACI CODE-318 165
18.8—Joints of special moment frames—See ACI CODE-318 165
18.9—Special moment frames constructed using precast concrete 165
18.10—Special structural walls—See ACI CODE-318 168
18.11—Special structural walls constructed using precast concrete 168
18.12—Diaphragms and trusses 168
18.13—Foundations 172
18.14—Members not designated as part of the seismic-force-resisting-system 176
CHAPTER 19—CONCRETE: DESIGN AND DURABILITY REQUIREMENTS, p. 178
19.1—Scope 178
19.2—Concrete design properties 178
19.3—Concrete durability requirements—See ACI CODE-318 178
19.4—Grout durability requirements—See ACI/PTI CODE-320 178
CHAPTER 20—STEEL REINFORCEMENT PROPERTIES, DURABILITY, AND EMBEDMENTS, p. 179
20.1—Scope 179
20.2—Nonprestressed bars and wires—See ACI CODE-318 179
20.3—Prestressing strands, wires, and bars 179
20.4—Headed shear stud reinforcement—See ACI CODE-318 181
20.5—Provisions for durability of steel reinforcement 181
20.6—Embedments—See ACI CODE-318 184
CHAPTER 21—STRENGTH REDUCTION FACTORS, p. 185
21.1—Scope 185
21.2—Strength reduction factors for structural concrete members and connections 185
CHAPTER 22—SECTIONAL STRENGTH, p. 188
22.1—Scope 188
22.2—Design assumptions for moment and axial strength 188
22.3—Flexural strength 190
22.4—Axial strength or combined flexural and axial strength 191
22.5—One-way shear strength 192
22.6—Two-way shear strength—See ACI CODE-318 200
22.7—Torsional strength 200
22.8—Bearing 208
22.9—Shear friction 210
CHAPTER 23—STRUT-AND-TIE METHOD, p. 217
23.1—Scope 217
CHAPTER 24—SERVICEABILITY, p. 218
24.1—Scope 218
24.2—Deflection due to service-load gravity loads 218
24.3—Distribution of flexural reinforcement in one-way slabs and beams 222
24.4—Shrinkage and temperature reinforcement 224
24.5—Permissible stresses in prestressed concrete flexural members 226
CHAPTER 25—REINFORCEMENT DETAILS, p. 229
25.1—Scope 229
25.2—Minimum spacing of reinforcement 229
25.3—Standard hooks, seismic hooks, crossties, and minimum inside bend diameters—See ACI CODE-318 230
25.4—Development and anchorage of reinforcement 230
25.5—Splices—See ACI CODE-318 232
25.6—Bundled reinforcement—See ACI CODE-318 232
25.7—Transverse reinforcement 232
25.8—Post-tensioning anchorages and couplers—See ACI/PTI CODE-320 239
25.9—Anchorage zones for post-tensioned tendons—See ACI/PTI CODE-320 239
CHAPTER 26—CONSTRUCTION DOCUMENTS AND INSPECTION, p. 240
26.1—Scope 240
26.2—Design criteria 241
26.3—Member information 241
26.4—Concrete materials, mixture requirements, and grouts 241
26.5—Concrete production and construction 247
26.6—Reinforcement materials and construction requirements 250
26.7—Anchoring to concrete 253
26.8—Embedments 255
26.9—Additional requirements for precast concrete 256
26.10—Additional requirements for post-tensioned concrete—See ACI/PTI CODE-320 258
26.11—Formwork—See ACI CODE-318 258
26.12—Evaluation and acceptance of hardened concrete 258
26.13—Inspection 263
CHAPTER 27—STRENGTH EVALUATION OF EXISTING STRUCTURES, p. 268
27.1—Scope 268
27.2—General—See ACI CODE-318 268
27.3—Analytical strength evaluation—See ACI CODE-318 268
27.4—Strength evaluation by load test—See ACI CODE-318 268
27.5—Monotonic load test procedure—See ACI CODE-318 268
27.6—Cyclic load test procedure—See ACI CODE-318 268
27.7—Precast concrete components and erected structures 268
COMMENTARY REFERENCES, p. 273
Authored documents 278