Abstract: 

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This guide provides recommendations on design provisions for the use of ASTM A1035/ASTM1035M Grade 100 (690) deformed steel bars for reinforced concrete members. The recommendations address only those requirements of ACI 318-08 that limit efficient use of such steel bars. Other code requirements are not affected.

This guide includes a discussion of the material characteristics of Grade 100 (690) ASTM 1035/A1035M deformed steel bars and recommends design criteria for beams, columns, slab systems, walls, and footings for Seismic Design Category (SDC) A, B, or C, and also for structural components not designated as part of the seismic-force-resisting system for SDC D, E, or F.

Keywords: bar; concrete; design; guide; high-strength steel; structural.

Contents: CONTENTS

Chapter 1—Introduction, p. 2

1.1—Objective

1.2—Scope

1.3—Historical perspective and background

1.4—Availability

Chapter 2—Notation and definitions, p. 4

2.1—Notation

2.2—Definitions

Chapter 3—Material properties, p. 5

3.1—Introduction

3.2—Weights, dimensions, and deformations

3.3—Specified tensile properties

3.4—Actual tensile properties

3.5—Actual compressive properties

3.6—Chemical composition

Chapter 4—Beams, p. 9

4.1—Introduction

4.2—Flexural strength

4.3—Tension- and compression-controlled limits

4.4—Strength reduction factor φ

4.5—Stress in steel due to flexure

4.6—Compression stress limit

4.7—Moment redistribution

4.8—Deflection

4.9—Crack control

4.10—Minimum reinforcement

4.11—Strength design for shear

Chapter 5—Columns, p. 14

5.1—Introduction

5.2—Specified yield strength for longitudinal reinforcement

5.3—Specified yield strength for transverse reinforcement

5.4—Slenderness effect

Chapter 6—Slab systems, p. 15

6.1—One-way slabs

6.2—Shear design of one-way slabs

6.3—Two-way slabs

Chapter 7—Walls, p. 15

7.1—Introduction

7.2—Vertical reinforcement

7.3—Horizontal reinforcement

7.4—Shear reinforcement

7.5—Minimum reinforcement

Chapter 8—Footings and pile caps, p. 16

8.1—Design

Chapter 9—Mat foundations, p. 16

9.1—Design

Chapter 10—Other design considerations, p. 16

10.1—Seismic design limitations

10.2—Development and lap splice length

10.3—Mechanically spliced bars and headed bars

10.4—Bending and welding of bars

10.5—Use of ASTM A1035/A1035M bars with ASTM A615/A615M bars

Chapter 11—Summary, p. 18

Chapter 12—References, p. 19

12.1— Referenced standards and reports

12.2—Cited references

Appendix A—Design examples, p. 22

A.1—Introduction

A.2—Design examples

Appendix B—Flexural analysis using nonlinear stress-strain curve of ASTM A1035/A1035M Grade 100 (690) reinforcement, p. 80

B.1—Introduction

B.2—Design assumptions

B.3—Spreadsheet implementation

B.4—Design examples

Appendix C—Flexural behavior of beams reinforced with ASTM 1035/A1035M bars, p. 88