332-20:Code Requirements for Residential Concrete and Commentary

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Description

This code covers the design and construction of cast-in-place concrete for one- and two-family dwellings and multiple single-family dwellings (townhouses), and their accessory structures. Among the subjects covered are the design and construction requirements for plain and reinforced concrete footings; foundation walls; slabs-on-ground; and requirements for concrete, reinforcement, forms, and other related materials. The quality and testing of materials discussed in this document are covered by reference to the appropriate ASTM standards.

This code is written to allow for reference by adoption in a general building code without changing its language. Background details or suggestions for carrying out the requirements or intent of the code are provided in the commentary. The commentary discusses some of the considerations of the committee in developing the code with emphasis given to the explanation of provisions that may be unfamiliar to code users or where significant departure exists from other concrete codes.

Keywords:

admixtures; aggregate; backfill; cement; compressive strength; cover; flexural strength; footings; formwork (construction); foundations; loads (forces); slabs; structural analysis; reinforcement.

 

Document Details

Author: ACI Committee 332

Pages: 72

ISBN: 9781641951074

Categories: Design, Formwork, Reinforcement, Slab-On-Ground

Formats: Printed Document or Protected PDF/Web View

Table of Contents

PREFACE, p. 3

CHAPTER 1—GENERAL, p. 5

1.1—Scope, p. 5

1.2—Alternative systems, p. 6

1.3—Drawings and specifications, p. 7

1.4—Inspection, p. 7

CHAPTER 2—NOTATION AND DEFINITIONS, p. 8

2.1—Notation, p. 8

2.2—Definitions, p. 9

CHAPTER 3—REFERENCED STANDARDS, p. 11

CHAPTER 4—MATERIALS, p. 13

4.1—Concrete, p. 13

4.2—Reinforcement, p. 13

4.3—Formwork, p. 14

4.4—Vapor retarder, p. 14

CHAPTER 5—CONCRETE REQUIREMENTS, p. 16

5.1—Exposure categories and classes, p. 16

5.2—General requirements, p. 18

5.3—Requirements for concrete mixtures, p. 18

5.4—Additional requirements for freezing-and-thawing exposure, p. 20

5.5—Alternative cementitious materials for sulfate exposure, p. 21

5.6—Concrete cover, p. 21

CHAPTER 6—DESIGN OF STRUCTURAL CONCRETE, p. 22

6.1—Scope, p. 22

6.2—Materials, p. 22

6.3—Load factors and combinations, p. 23

6.4—Strength reduction factors, p. 24

6.5—Plain concrete, p. 24

6.6—Sectional strength of reinforced sections, p. 26

6.7—Design limits, p. 30

6.8—Reinforcement detailing, p. 30

CHAPTER 7—CONCRETE PRODUCTION AND PLACEMENT, p. 31

7.1—Concrete, p. 31

7.2—Placement, p. 31

7.3—Form removal, p. 31

7.4—Finishing, p. 31

7.5—Curing, p. 32

7.6—Protection of concrete during cold weather, p. 32

7.7—Temperature limits for concrete as delivered in hot weather, p. 33

CHAPTER 8—FOOTINGS, p. 34

8.1—Scope, p. 34

8.2—General, p. 34

8.3—Design limits, p. 37

8.4—Required strength, p. 38

8.5—Design, p. 39

8.6—Prescriptive design tables, p. 39

8.7—Construction requirements, p. 45

CHAPTER 9—FOUNDATION WALLS, p. 47

9.1—Scope, p. 47

9.2—General, p. 47

9.3—Design limits, p. 49

9.4—Required strength, p. 51

9.5—Design, p. 51

9.6—Connection to lateral support system, p. 62

9.7—Construction requirements, p. 62

CHAPTER 10—ABOVE-GRADE WALLS, p. 64

10.1—Scope, p. 64

10.2—General, p. 64

10.3—Design limits, p. 64

10.4—Required strength, p. 64

10.5—Design, p. 64

10.6—Construction requirements, p. 65

CHAPTER 11—LINTEL BEAMS, p. 66

11.1—Scope, p. 66

11.2—General, p. 66

11.3—Design limits, p. 67

11.4—Required strength, p. 67

11.5—Design, p. 67

11.6—Prescriptive design, p. 67

CHAPTER 12—DESIGN FOR EXPANSIVE SOILS, p. 68

12.1—Scope, p. 68

12.2—General, p. 68

12.3—Expansive soil classification, p. 68

12.4—Design, p. 68

CHAPTER 13—SLABS-ON-GROUND, p. 69

13.1—Scope, p. 69

13.2—Design, p. 69

13.3—Support, p. 69

13.4—Forms, p. 69

13.5—Thickness, p. 69

13.6—Joints, p. 69

13.7—Reinforcement, p. 70

COMMENTARY REFERENCES, p. 72

Authored documents, p. 73

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