Cover -- Dedication -- Contents -- Preface -- About the Author -- Chapter 1: Basic Principles -- 1.1 Introduction -- 1.2 Need for Prestressed Concrete -- 1.3 Brief History of Prestressed Concrete -- 1.4 Structural Behaviour of Prestressed Concrete Member -- 1.5 Methods of Prestressing -- 1.5.1 Pre-tensioning -- 1.5.2 Post-tensioning -- 1.6 Types of Prestressed Concrete -- 1.6.1 Classification as per IS:1343-19801 -- 1.6.2 Other Classifications -- 1.7 Comparison with Reinforced Concrete -- 1.8 Applications of Prestressed Concrete -- 1.9 Design Code -- Chapter 2: Materials -- 2.1 Introduction -- 2.2 Prestressing Steel -- 2.2.1 High Tensile Steel -- 2.2.2 Need for High Tensile Steel -- 2.2.3 Types of Prestressing Steel -- 2.2.4 Modulus of Elasticity of Prestressing Steel -- 2.2.5 Maximum Initial Prestress in Tendon -- 2.3 Concrete -- 2.3.1 Need for High Strength Concrete -- 2.3.2 Compressive Strength of Concrete -- 2.3.3 Tensile Strength of Concrete -- 2.3.4 Modulus of Elasticity of Concrete -- 2.3.5 Time-dependent Deformation of Concrete -- Chapter 3: Limit State Design -- 3.1 Introduction -- 3.2 Limit States -- 3.3 Characteristic and Design Load -- 3.4 Characteristic and Design Strength of Material -- 3.5 Characteristic and Design Stress-Strain Curves -- 3.5.1 Stress-Strain Curves for Concrete -- 3.5.2 Stress-Strain Curves for Prestressing Steel -- 3.6 Design Requirements as per LSM -- 3.7 Limit State Design of Prestressed Concrete Members -- Chapter 4: Losses in Prestress -- 4.1 Introduction -- 4.2 Immediate Losses -- 4.2.1 Loss Due to Elastic Shortening of Concrete -- 4.2.2 Loss Due to Friction -- 4.2.3 Loss Due to Slip in Anchorage -- 4.3 Time Dependent Losses -- 4.3.1 Loss Due to Shrinkage of Concrete -- 4.3.2 Loss Due to Creep of Concrete -- 4.3.3 Loss Due to Relaxation of Steel -- 4.4 Total Loss in Prestress -- Problems.

Chapter 5: Analysis of Sections -- 5.1 Introduction -- 5.2 Analysis at Serviceability Limit State -- 5.2.1 Combined Load Approach -- 5.2.2 Internal Couple Approach -- 5.2.2.1 Kern Points -- 5.2.2.2 Pressure Line -- 5.2.3 Concept of Equivalent Loads -- 5.3 Load Balancing -- 5.4 Decompression Moment (Mdec) -- 5.5 Cracking Moment Mcr -- 5.6 Additional Stress in Tendon Due to Bending -- 5.7 Flexural Behaviour of Prestressed Concrete Member -- 5.7.1 Load Deflection Behaviour -- 5.7.2 Stress in Tendon -- 5.7.3 Modes of Failure in Flexure -- 5.7.4 Types of Section -- 5.8 Analysis at Ultimate Limit State -- 5.8.1 Analysis of Rectangular Sections with Bonded Tendons -- 5.8.2 Analysis of Post-tensioned Rectangular Beams Having Unbonded Tendons -- 5.8.3 Analysis of Flanged Sections -- Problems -- Chapter 6: Shear and Torsion -- 6.1 Introduction -- 6.2 Design for Shear -- 6.2.1 Effect of Prestress in Shear Strength -- 6.2.2 Identification of Zones for Shear Design -- 6.2.3 Ultimate Shear Resistance -- 6.2.4 Ultimate Shear Resistance of Concrete Vuc -- 6.2.5 Design of Shear Reinforcement -- 6.2.6 Minimum Shear Reinforcement -- 6.2.7 Maximum Ultimate Shear Force (Vu, max) -- 6.2.8 Steps for Shear Design -- 6.3 Design for Torsion -- 6.3.1 Equilibrium Torsion and Compatibility Torsion -- 6.3.2 Failure of Concrete Member Due to Torsion -- 6.3.3 Design Methods for Torsion -- 6.3.4 Design Provisions for Torsion as per IS:1345-1980 -- 6.3.5 Detailing of Torsion Reinforcement -- 6.3.6 Steps for Torsion Design -- Problems -- Chapter 7: Anchorage Zones -- 7.1 Introduction -- 7.2 Anchorage Zones in Pre-tensioned Members -- 7.2.1 Bond Mechanisms -- 7.2.2 Transmission Length -- 7.2.3 Flexural Bond Length -- 7.2.4 Development Length -- 7.2.5 End Zone Reinforcement -- 7.3 Anchorage Zones in Post-tensioned Members -- 7.3.1 Bearing Stresses Behind Anchorage.

7.3.2 Bursting Forces in Anchorage Zones -- 7.3.3 End Zone Reinforcement -- Problems -- Chapter 8: Deflections -- 8.1 Introduction -- 8.2 Deflections in Uncracked Beams -- 8.2.1 Short Term Deflection at Transfer (SE(Bst -- 8.2.2 Long Term Deflection at Service Condition (SE(Bls -- 8.3 Deflection of Type 3 Members -- 8.4 Deflection Limits -- Problems -- Chapter 9: Design of Members -- 9.1 Introduction -- 9.2 Governing Inequalities -- 9.3 Minimum Section Modulus -- 9.3.1 Minimum Section Modulus for the Top Fibre Za -- 9.3.2 Minimum Section Modulus for the Bottom Fibre Zb -- 9.4 Design of Prestressing Force -- 9.5 Magnel Diagram -- 9.6 Cable Zone -- 9.7 Selection of Cross-section -- 9.7.1 Flexural Efficiency Factor Q -- 9.7.2 General Guidelines for Beam Sections -- 9.8 Requirements for Flexural Reinforcement -- 9.8.1 Concrete Cover -- 9.8.2 Spacing of Tendons -- 9.8.3 Minimum Longitudinal Steel -- 9.8.4 Minimum Side Face Reinforcement -- 9.9 Design Procedure for Prestressed Concrete Members -- Problems -- Chapter 10: Composite Members -- 10.1 Introduction -- 10.2 Analysis at Serviceability Limit State -- 10.2.1 Stresses in Precast Web at Transfer -- 10.2.2 Stresses in Precast Web After Time Dependent Losses -- 10.2.3 Stresses in Precast Web After Casting of In-situ Slab -- 10.2.4 Stresses in Composite Section at Service Condition (Total Design Load Condition) -- 10.3 Stresses Due to Differential Shrinkage -- 10.4 Horizontal Shear Transfer -- 10.5 Ultimate Moment of Resistance -- 10.6 Design of Composite Members -- 10.6.1 Minimum Section Modulus -- 10.6.2 Required Prestressing Force and Allowable Cable Zone -- Problems -- Chapter 11: Indeterminate Structures -- 11.1 Introduction -- 11.2 Effects of Prestress in Indeterminate Structure -- 11.2.1 Primary and Secondary Moments and Shears -- 11.2.2 Section Moments and Concrete Moments.

11.2.3 Pressure Line Due to Prestressing Force -- 11.2.4 Calculating the Effects of Prestress Using the Concept of Equivalent Loads -- 11.3 Linear Transformation of Cable Profile -- 11.4 Concordant Cable -- 11.5 Analysis of Real Cables -- 11.6 Calculation of Elastic Stresses in Concrete -- 11.7 Behaviour at Ultimate Load -- Problem -- Chapter 12: Slabs -- 12.1 Introduction -- 12.2 General Design Procedure -- 12.3 One-way Slabs -- 12.4 Edge-supported Two-way Slabs -- Problems -- Chapter 13: Circular Prestressing -- 13.1 Introduction -- 13.2 Circumferential Prestressing -- 13.2.1 Analysis at Transfer (Fig. 13.1(a)) -- 13.2.2 Analysis at Service Condition (Fig. 13.1(b)) -- 13.2.3 Design -- 13.3 Prestressed Concrete Pipes -- 13.4 Prestressed Concrete Circular Tanks -- 13.4.1 Behaviour -- 13.4.2 Analysis -- 13.4.3 Design -- 13.4.4 Detailing Requirements -- 13.5 Ring Beams -- 13.5.1 Analysis and Design -- Problems -- References -- Index.

This book is suited for a first course in prestressed concrete design offered to senior undergraduate students in civil engineering and postgraduate students in structural engineering. The book focuses on the behaviour of the prestressed concrete structural elements. Carefully chosen worked examples are included to delineate the design aspects while relevant chapter-end questions enable effortless recapitulation of the subject. The content, while being useful to both the students and teachers, will also serve as an invaluable reference for engineers.

Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2018. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.