ACI 423.3R 17:2017 Edition
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423.3R-17: Recommendations for Concrete Members Prestressed with Single-Strand Unbonded Tendons
Published By | Publication Date | Number of Pages |
ACI | 2017 | 28 |
This report provides information for the design of flexural concrete members in buildings post-tensioned with single-strand unbonded tendons. The report is intended to complement the commentary in ACI 318 and to provide suggestions for revisions and additions to ACI 318. Consideration is given to design for gravity and lateral loads, determination of fire endurance, design for seismic forces, and design for catastrophic loadings. Recommendations concerning details and properties of tendons, protection against corrosion, and construction procedures are presented. Keywords: concrete slabs; cracking; fire resistance; joints; punching shear; unbonded post-tensioning
PDF Catalog
PDF Pages | PDF Title |
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3 | TITLE PAGE |
4 | CHAPTER 1—INTRODUCTION 1.1—General 1.2—Objective 1.3—Scope CHAPTER 2—NOTATION AND DEFINITIONS 2.1—Notation |
5 | 2.2—Definitions CHAPTER 3—MEMBER DESIGN 3.1—General 3.2—One-way systems |
6 | 3.3—Two-way systems |
10 | 3.4—Beams |
11 | 3.5—Effects of supporting walls and columns on prestress forces |
12 | CHAPTER 4—ANCHORAGE ZONES 4.1—Anchorage zone reinforcement |
13 | CHAPTER 5—SEISMIC DESIGN 5.1—Earthquake loading |
15 | CHAPTER 6—DESIGN CONSIDERATIONS 6.1—General 6.2—Design strength 6.3—Tendon stress at factored load |
16 | 6.4—Prestress losses 6.5—Average prestress |
17 | 6.6—Serviceability requirements 6.7—Continuous members 6.8—Corrosion protection |
18 | 6.9—Fire resistance |
20 | CHAPTER 7—MATERIALS 7.1—Tendons 7.2—Protection materials 7.3—Protection of anchorage zones 7.4—Concrete cover |
21 | CHAPTER 8—CONSTRUCTION 8.1—Construction joints 8.2—Closure strips 8.3—Placement of tendons 8.4—Concrete placement and curing |
22 | 8.5—Stressing operations |
23 | 8.6—Form removal and reshoring 8.7—Welding and burning 8.8—Protection of tendons CHAPTER 9—REFERENCES Authored documents |