349-97 Code Requirements for Nuclear Safety-Related Concrete Structures & Commentary

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Description

This standard covers the proper design and construction of concrete struc-tures which form part of a nuclear power plant and which have nuclearsafety related functions, but does not cover concrete reactor vessels and con-crete containment structures (as defined by ACI-ASME Committee 359).The structures covered by the code include concrete structures inside andoutside the containment system. This code may be referenced and applied subject to agreement between theOwner and the Regulatory Authority. The format of this Code is based on the “Building Code Requirement forReinforced Concrete (ACI 318-89) (Revised 1992)” and incorporatesrecent revisions of that standard, except for Chapter 12, which is based onACI318-95.

Keywords: admixtures; aggregates; anchorage (structural); beam-columnframe; beams (supports); building codes; cements; cold weather con-struction; columns (supports); combined stress; composite construction(concrete and steel); composite construction (concrete to concrete); com-pressive strength; concrete construction; concretes; concrete slabs; con-struction joints; continuity (structural); cover; cracking (fracturing);creep properties; curing; deep beams; deflection; drawings (drafting);earthquake resistant structures; edge beams; embedded service ducts;flexural strength; floors; folded plates; footings; formwork (construc-tion); frames; hot weather construction; inspection; joists; loads (forces);load tests (structural); mixing; mix proportioning; modules of elasticity;moments; nuclear power plants; nuclear reactor containments; nuclearreactors; nuclear reactor safety; pipe columns; pipes (tubes); placing; pre-cast concrete; prestressed concrete; prestressing steels; quality control;reinforced concrete; reinforcing steels; roofs; safety; serviceability; shearstrength; shearwalls; shells (structural forms); spans; specifications;splicing; strength; strength analysis; structural analysis; structural design;T-beams; temperature; torsion; walls; water; welded wire fabric.

 

Document Details

Author: ACI Committee 349

Publication Year: 2002

ISBN: 9780870314582

Categories: Codes, Nuclear

Formats: PDF

This document is Historical

Table of Contents

PART 1—GENERAL

Chapter 1—General Requirements

1.1—Scope

1.2—Drawings, specifications, and calculations

1.3—Inspection and record keeping

1.4—Approval of special systems of design or construction

1.5—Quality assurance program

Chapter 2—Definitions

PART 2—STANDARDS FOR TESTS AND

MATERIALS

Chapter 3—Materials.

3.0—Notation

3.1—Tests of materials

3.2—Cements

3.3—Aggregates

3.4—Water

3.5—Metal reinforcement

3.6—Admixtures

3.7—Storage and identification of materials

3.8—Standards cited in this Code

PART 3—CONSTRUCTION REQUIREMENTS

Chapter 4—Durability Requirements

4.0—Notation

4.1—Water-cementitious materials ratio

4.2—Freezing and thawing exposures

4.3—Sulfate exposures

4.4—Corrosion protection of reinforcement

Chapter 5—Concrete Quality, Mixing, and Placing

5.0—Notation

5.1—General

5.2—Selection of concrete proportions

5.3—Proportioning on the basis of field experience and/or trial mixtures

5.4—Proportioning by water-cementitious materials ratio

5.5—Average strength reduction

5.6—Evaluation and acceptance of concrete

5.7—Preparation of equipment and place of deposit

5.8—Mixing

5.9—Conveying

5.10—Depositing

5.11—Curing

5.12—Cold weather requirements

5.13—Hot weather requirements

Chapter 6—Formwork, Embedded Pipes,

and Construction Joints

6.1—Design of formwork

6.2—Removal of forms and shores

6.3—Conduits, pipes, and sleeves embedded in concrete

6.4—Construction joints

Chapter 7—Details of Reinforcement.

7.0—Notation

7.1—Standard hooks

7.2—Minimum bend diameters

7.3—Bending

7.4—Surface conditions of reinforcement

7.5—Placing reinforcement

7.6—Spacing limits for reinforcement

7.7—Concrete protection for reinforcement

7.8—Special reinforcing details for columns

7.9—Connections

7.10—Lateral reinforcement for compression members

7.11—Lateral reinforcement for flexural members

7.12—Minimum reinforcement

PART 4—GENERAL REQUIREMENTS

Chapter 8—Analysis and Design:

General Considerations.

8.0—Notation

8.1—Design methods

8.2—Loading

8.3—Methods of analysis

8.4—Redistribution of negative moments in continuous nonprestressed flexural members

8.5—Modulus of elasticity

8.6—Stiffness

8.7—Span length

8.8—Columns

8.9—Arrangement of live load

8.10—T-beam construction

8.11—Joist construction

8.12—Separate floor finish

Chapter 9—Strength and Serviceability

Requirements

9.0—Notation

9.1—General

9.2—Required strength

9.3—Design strength

9.4—Design strength for reinforcement

9.5—Control of deflections

Chapter 10—Flexure and Axial Loads

10.0—Notation

10.1—Scope

10.2—Design assumptions

10.3—General principles and requirements

10.4—Distance between lateral supports of

flexural members

10.5—Minimum reinforcement of flexural members

10.6—Distribution of flexural reinforcement in beams and one-way slabs

10.7—Deep flexural members

10.8—Design dimensions for compression members

10.9—Limits for reinforcement of compression members

10.10—Slenderness effects in compression members

10.11—Approximate evaluation of slenderness effects

10.12—Axially loaded members supporting slab system

10.13—Transmission of column loads through floor system

10.14—Composite compression members

10.15—Bearing strength

Chapter 11—Shear and Torsio n.

11.0—Notation

11.1—Shear strength

11.2—Lightweight concrete

11.3—Shear strength provided by concrete for

nonprestressed members

11.4—Shear strength provided by concrete for prestressed members

11.5—Shear strength provided by shear reinforcement

11.6—Combined shear and torsion strength for

nonprestressed members with rectangular or flanged sections

11.7—Shear-friction

11.8—Special provisions for deep flexural members

11.9—Special provisions for brackets and corbels

11.10—Special provisions for walls

11.11—Transfer of moments to columns

11.12—Special provisions for slabs and footings

Chapter 12—Development and Splices of Reinforcement

12.0—Notation

12.1—Development of reinforcement: General

12.2—Development of deformed bars and deformed wire in tension

12.3—Development of deformed bars in compression

12.4—Development of bundled bars

12.5—Development of standard hooks in tension

12.6—Mechanical anchorage

12.7—Development of welded deformed wire fabric in tension

12.8—Development of welded plain wire fabric in tension

12.9—Development of prestressing strand

12.10—Development of flexural reinforcement: General

12.11—Development of positive moment reinforcement

12.12—Development of negative moment reinforcement

12.13—Development of web reinforcement

12.14—Splices of reinforcement: General

12.15—Splices of deformed bars and deformed wire in tension

12.16—Splices of deformed bars in compression

12.17—Special splice requirements for columns

12.18—Splices of welded deformed wire fabric in tension

12.19—Splices of welded plain wire fabric in tension

PART 5—STRUCTURAL SYSTEMS OR ELEMENTS

Chapter 13—Two-Way Slab Systems .

13.0—Notation

13.1—Scope

13.2—Definitions

13.3—Design procedures

13.4—Slab reinforcement

13.5—Openings in slab systems

13.6—Direct design method

13.7—Equivalent frame method

Chapter 14—Walls

14.0—Notation

14.1—Scope

14.2—General

14.3—Minimum reinforcement

14.4—Walls designed as compression members

14.5—Empirical design method

14.6—Nonbearing walls

14.7—Walls as grade beams

Chapter 15—Footings

15.0—Notation

15.1—Scope

15.2—Loads and reactions

15.3—Footings supporting circular or regular polygon

shaped columns or pedestals

15.4—Moment in footings

15.5—Shear in footings

15.6—Development of reinforcement in footings

15.7—Minimum footing depth

15.8—Transfer of force at base of column, wall, or reinforced pedestal

15.9—Sloped or stepped footings

15.10—Combined footings and mats

Chapter 16—Precast Concrete

16.1—Scope

16.2—Design

16.3—Precast wall panels

16.4—Details

16.5—Identification and marking

16.6—Transportation, storage, and erection

Chapter 17—Composite Concrete

Flexural Members

17.0—Notation

17.1—Scope

17.2—General

17.3—Shoring

17.4—Vertical shear strength

17.5—Horizontal shear strength

17.6—Ties for horizontal shear

Chapter 18—Prestressed Concrete

18.0—Notation

18.1—Scope

18.2—General

18.3—Design assumptions

18.4—Permissible stresses in concrete: Flexural members

18.5—Permissible stresses in prestressing tendons

18.6—Loss of prestress

18.7—Flexural strength

18.8—Limits for reinforcement of flexural members

18.9—Minimum bonded reinforcement

18.10—Statically indeterminate structures

18.11—Compression members: Combined flexure and axial loads

18.12—Slab systems

18.13—Tendon anchorage zones

18.14—Corrosion protection for unbonded prestressing tendons

18.15—Post-tensioning ducts

18.16—Grout for bonded prestressing tendons

18.17—Protection for prestressing tendons

18.18—Application and measurement of prestressing force

18.19—Post-tensioning anchorages and couplers

Chapter 19—Shells

19.0—Notation

19.1—Scope and definitions

19.2—General

19.3—Design strength of materials

19.4—Section design and reinforcement requirements

19.5—Construction

PART 6—SPECIAL CONSIDERATIONS

Chapter 20—Strength Evaluation

of Existing Structures

20.0—Notation

20.1—Strength evaluation: General

20.2—Analytical investigations: General

20.3—Load tests: General

20.4—Load tests of flexural members

20.5—Members other than flexural members

20.6—Safety

Chapter 21—Special Provisions for

Seismic Design . .

21.0—Notation

21.1—Definitions

21.2—General requirements

21.3—Flexural members of frames

21.4—Frame members subjected to bending and axial load

21.5—Joints of frames

21.6—Structural walls, diaphragms, and trusses

21.7—Frame members not proportioned to resist forces induced

by earthquake motions

APPENDICES

APPENDIX A—Thermal Considerations.

A.1—Scope

A.2—Definitions

A.3—General design requirements

A.4—Concrete temperatures

APPENDIX B—Steel Embedments

B.0—Notation

B.1—Scope

B.2—Definitions

B.3—General requirements and loading combinations

B.4—Design requirements for concrete

B.5—Anchorage requirements

B.6—Design requirements for embedment steel

B.7—Expansion anchors

B.8—Inserts

B.9—Grouted embedments

B.10—Fabrication and installation

APPENDIX C—Special Provisions for Impulsive

and Impactive Effects

C.0—Notation

C.1—Scope

C.2—Dynamic strength increase

C.3—Deformation

C.4—Requirements to assure ductility

C.5—Shear strength

C.6—Impulsive effects

C.7—Impactive effects

C.8—Impactive and impulsive loads

APPENDIX D—SI Metric Equivalents

of U.S. Customary Units.

ERRATA INFO

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