Description

This manual provides recommendations for economical post-tensioned slab-on-ground foundations. It presents guidelines for soil investigation, design, and construction of post-tensioned residential and light commercial slabs on expansive or compressible soils. It includes three complete design examples and information on the design of industrial floors on stable soils. The third edition provides notable revisions in several chapters, meant to clarify or guide the designer in the application of this design procedure and its limitations. In addition, it offers a design method for “uniform thickness foundations” and modifies the permissible shear stress equation.

Contains:

Standard Requirements for Analysis of Shallow Concrete Foundations on Expansive Soils (2008)

Standard Requirements for Design of Shallow Concrete Foundations on Expansive Soils (2008)

*Note - Errata issued February 2010, Addendum issued May 2007, May 2008.

156 pages; 8½ x 11 in. (soft cover)

Published 2008

Table of Contents

TABLE OF CONTENTS

1.0 INTRODUCTION

1.1 History and Development

1.2 Document Outline

1.3 Objectives

1.4 Applicability

2.0 SLABS ON STABLE SOILS

2.1 General

2.2 Post-Tensioned Designs for BRAB Type I and Type II Slabs

3.0 GEOTECHNICAL INVESTIGATION

3.1 Introduction

3.2 Design Principles

3.3 Minimum Field Investigation Program

3.4 Suggested Laboratory Testing Program

3.5 Geotechnical Report

3.6 Expansive Soil Support Parameters

3.7 Moisture Barriers

4.0 DESIGN COMMENTARY

4.1 General

4.2 Climate

4.3 Soil Parameters

4.4 Site Parameters

4.5. Structural Parameters

5.0 SOIL-STRUCTURE INTERACTION ANALYSIS

5.1 General

5.2 Bending Moment

5.3 Shear

5.4 Differential Deflection

5.5 Slab-Subgrade Friction

6.0 STRUCTURAL DESIGN PROCEDURE FOR SHALLOW POST TENSIONED FOUNDATIONS

6.1 General

6.2 Required Design Data

6.3 Slabs of Irregular Shape

6.4 Trial Section Assumptions

6.5 Allowable Stresses

6.6 Prestress Losses

6.7 Subgrade Friction

6.8 Maximum Applied Service Moments

6.9 Cracked Section Considerations

6.10 Stiffness

6.11 Shear

6.12 Uniform Thickness Conversion

6.13 Other Applications of Design Procedure

6.14 Calculation of Stress in Slabs Due to Load Bearing Partitions

6.15 Lateral Loads

7.0 MATERIALS

7.1 Concrete

7.2 Post-Tensioning Materials

7.3 Non-Prestressed Reinforcement

8.0 NOTES, PLANS AND TOLERANCES

8.1 Notes and Design Assumptions

8.2 Plans

8.3 Tolerances

APPENDIX A.1 Symbols and Notation

APPENDIX A.2 Design Equations

APPENDIX A.3 Design Example: Residential Foundation on Expansive Soil (Very Dry)

APPENDIX A.4 Design Example: Residential Foundation on Expansive Soil (Extreme Suction Profiles)

APPENDIX A.5 Design Example: Residential Foundation on Expansive Soil (Wet Climate)

APPENDIX A.6 Bibliography and References

STANDARDS REFERENCED IN THE INTERNATIONAL BUILDING CODE

Standard Requirements for Analysis of Shallow Concrete Foundations on Expansive Soils

Standard Requirements for Design of Shallow Concrete Foundations on Expansive Soils

ADDENDA AND ERRATA INFO

Any applicable addenda or errata are included with individual documents at the time of purchase. For a listing of and access to all product addenda and errata, visit the Addenda and Errata page. Errata page.

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