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| Preface | |
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| Basic Concepts | |
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| Introduction | |
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| Historical Development of Prestressing | |
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| Basic Concepts of Prestressing | |
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| Computation of Fiber Stresses in a Prestressed Beam by the Basic Method | |
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| C-Line Computation of Fiber Stresses | |
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| Load-Balancing Computation of Fiber Stresses | |
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| SI Working Stress Concepts | |
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| References | |
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| Problems | |
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| Materials and Systems for Prestressing | |
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| Concrete | |
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| Stress-Strain Curve of Concrete | |
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| Modulus of Elasticity and Change in Compressive Strength with Time | |
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| Creep | |
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| Shrinkage | |
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| Nonprestressing Reinforcement | |
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| Prestressing Reinforcement | |
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| ACI Maximum Permissible Stresses in Concrete and Reinforcement | |
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| AASHTO Maximum Permissible Stresses in Concrete and Reinforcement | |
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| Prestressing Systems and Anchorages | |
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| Circular Prestressing | |
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| Ten Principles | |
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| References | |
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| Partial Loss of Prestress | |
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| Introduction | |
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| Elastic Shortening of Concrete (ES) | |
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| Steel Stress Relaxation (R) | |
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| Creep Loss (CR) | |
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| Shrinkage Loss (SH) | |
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| Losses Due to Friction (F) | |
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| Anchorage-Seating Losses (A) | |
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| Change of Prestress Due to Bending of a Member ([Delta]f[subscript pB]) | |
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| Step-by-Step Computation of All Time-Dependent Losses in a Pre-Tension Beam | |
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| Step-by-Step Computation of All Time-Dependent Losses in a Post-Tension Beam | |
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| Lump-Sum Computation of Time-Dependent Losses in Prestress | |
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| SI Prestress Loss Expressions | |
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| References | |
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| Problems | |
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| Flexural Design of Prestressed Concrete Elements | |
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| Introduction | |
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| Selection of Geometrical Properties of Section Components | |
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| Service-Load Design Examples | |
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| Proper Selection of Beam Sections and Properties | |
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| End Blocks at Support Anchorage Zones | |
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| Flexural Design of Composite Beams | |
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| Summary of Step-by-Step Trial-and-Adjustment Procedure for the Service-Load Design of Prestressed Members | |
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| Design of Composite Post-Tensioned Prestressed Simply Supported Section | |
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| Ultimate-Strength Flexural Design | |
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| Load and Strength Factors | |
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| ACI Load Factors and Safety Margins | |
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| Limit State in Flexure at Ultimate Load in Bonded Members: Decompression to Ultimate Load | |
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| Preliminary Ultimate-Load Design | |
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| Summary Step-by-Step Procedure for Limit at Failure Design of the Prestressed Members | |
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| Ultimate Strength Design of Prestressed Simply Supported Beam by Strain Compatibility | |
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| Strength Design of Bonded Prestressed Simply Supported Beam Using Approximate Procedures | |
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| SI Flexural Design Expression | |
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| References | |
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| Problems | |
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| Shear and Torsional Strength Design | |
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| Introduction | |
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| Behavior of Homogeneous Beams in Shear | |
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| Behavior of Concrete Beams as Nonhomogeneous Sections | |
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| Concrete Beams without Diagonal Tension Reinforcement | |
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| Shear and Principal Stresses in Prestressed Beams | |
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| Web-Shear Reinforcement | |
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| Horizontal Shear Strength in Composite Construction | |
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| Web Reinforcement Design Procedure for Shear | |
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| Principal Tensile Stresses in Flanged Sections and Design of Dowel-Action Vertical Steel in Composite Sections | |
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| Dowel Steel Design for Composite Action | |
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| Dowel Reinforcement Design for Composite Action in an Inverted T-Beam | |
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| Shear Strength and Web-Shear Steel Design in a Prestressed Beam | |
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| Web-Shear Steel Design by Detailed Procedures | |
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| Design of Web Reinforcement for a PCI Standard Double Composite T-Beam | |
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| Brackets and Corbels | |
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| Torsional Behavior and Strength | |
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| Torison in Reinforced and Prestressed Concrete Elements | |
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| Design Procedure for Combined Torsion and Shear | |
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| Design of Web Reinforcement for Combined Torsion and Shear in Prestressed Beams | |
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| SI Combined Torsion and Shear Design of Prestressed Beam | |
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| References | |
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| Problems | |
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| Indeterminate Prestressed Concrete Structures | |
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| Introduction | |
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| Disadvantages of Continuity in Prestressing | |
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| Tendon Layout for Continuous Beams | |
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| Elastic Analysis for Prestress Continuity | |
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| Examples Involving Continuity | |
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| Linear Transformation and Concordance of Tendons | |
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| Ultimate Strength and Limit State at Failure of Continuous Beams | |
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| Tendon Profile Envelope and Modifications | |
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| Tendon and C-Line Location in Continuous Beams | |
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| Tendon Transformation to Utilize Advantages of Continuity | |
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| Design for Continuity Using Nonprestressed Steel at Support | |
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| Indeterminate Frames and Portals | |
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| Limit Design (Analysis) of Indeterminate Beams and Frames | |
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| References | |
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| Problems | |
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| Camber, Deflection, and Crack Control | |
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| Introduction | |
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| Basic Assumptions in Deflection Calculations | |
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| Short-Term (Instantaneous) Deflection of Uncracked and Cracked Members | |
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| Short-Term Deflection at Service Load | |
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| Short-Term Deflection of Cracked Prestressed Beams | |
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| Construction of Moment-Curvature Diagram | |
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| Long-Term Effects on Deflection and Camber | |
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| Permissible Limits of Calculated Deflection | |
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| Long-Term Camber and Deflection Calculation by the PCI Multipliers Method | |
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| Long-Term Camber and Deflection Calculation by the Incremental Time-Steps Method | |
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| Long-Term Camber and Deflection Computation by the Approximate Time-Steps Method | |
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| Long-Term Deflection of Composite Double-T Cracked Beam | |
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| Cracking Behavior and Crack Control in Prestressed Beams | |
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| Crack Width and Spacing Evaluation in Pretensioned T-Beam Without Mild Steel | |
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| Crack Width and Spacing Evaluation in Pretensioned T-Beam Containing Nonprestressed Steel | |
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| Crack Width and Spacing Evaluation in Pretensioned I-Beam Containing Nonprestressed Mild Steel | |
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| Crack Width and Spacing Evaluation for Post-tensioned T-Beam Containing Nonprestressed Steel | |
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| Crack Control by ACI Code Provisions | |
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| SI Deflection and Cracking Expressions | |
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| SI Deflection Control | |
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| SI Crack Control | |
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| References | |
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| Problems | |
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| Prestressed Compression and Tension Members | |
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| Introduction | |
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| Prestressed Compression Members: Load-Moment Interaction in Columns and Piles | |
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| Strength Reduction Factor [phi] | |
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| Operational Procedure for the Design of Nonslender Prestressed Compression Members | |
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| Construction of Nominal Load-Moment (P[subscript n]-M[subscript n]) and Design (P[subscript u]-M[subscript u]) Interaction Diagrams | |
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| Limit State at Buckling Failure of Slender (Long) Prestressed Columns | |
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| Moment Magnification Method: First-Order Analysis | |
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| Second-Order Frame Analysis and P - [Delta] Effects | |
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| Operational Procedure and Flowchart for the Design of Slender Columns | |
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| Design of Slender (Long) Prestressed Column | |
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| Compression Members in Biaxial Bending | |
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| Practical Design Considerations | |
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| Reciprocal Load Method for Biaxial Bending | |
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| Modified Load Contour Method for Biaxial Bending | |
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| Prestressed Tension Members | |
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| Suggested Step-by-Step Procedure for the Design of Tension Members | |
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| Design of Linear Tension Members | |
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| References | |
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| Problems | |
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| Two-Way Prestressed Concrete Floor Systems | |
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| Introduction: Review of Methods | |
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| Flexural Behavior of Two-Way Slabs and Plates | |
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| The Equivalent Frame Method | |
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| Two-Directional Load Balancing | |
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| Flexural Strength of Prestressed Plates | |
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| Bending of Prestressing Tendons and Limiting Concrete Stresses | |
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| Load-Balancing Design of a Single-Panel Two-Way Floor Slab | |
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| One-Way Slab Systems | |
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| Shear-Moment Transfer to Columns Supporting Flat Plates | |
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| Step-by-Step Trial-and-Adjustment Procedure for the Design of a Two-Way Prestressed Slab and Plate System | |
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| Design of Prestressed Post-Tensioned Flat-Plate Floor System | |
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| Direct Method of Deflection Evaluation | |
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| Deflection Evaluation of Two-Way Prestressed Concrete Floor Slabs | |
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| Yield-Line Theory for Two-Way-Action Plates | |
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| Yield-Line Moment Strength of a Two-Way Prestressed Concrete Plate | |
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| References | |
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| Problems | |
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| Connections for Prestressed Concrete Elements | |
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| Introduction | |
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| Tolerances | |
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| Composite Members | |
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| Reinforced Concrete Bearing in Composite Members | |
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| Dapped-End Beam Connections | |
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| Reinforced Concrete Brackets and Corbels | |
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| Concrete Beam Ledges | |
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| Selected Connection Details | |
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| References | |
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| Problems | |
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| Prestressed Concrete Circular Storage Tanks and Steel Roofs | |
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| Introduction | |
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| Design Principles and Procedures | |
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| Moment M[subscript 0] and Ring Force Q[subscript 0] in Liquid Retaining Tank | |
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| Ring Force Q[subscript y] at Intermediate Heights of Wall | |
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| Cylindrical Steel Membrane Coefficients | |
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| Prestressing Effects on Wall Stresses for Fully Hinged, Partially Sliding and Hinged, Fully Fixed, and Partially Fixed Bases | |
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| Recommended Practice for Situ-Cast and Precast Prestressed Concrete Circular Storage Tanks | |
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| Crack Control in Walls of Circular Prestressed Concrete Tanks | |
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| Tank Roof Design | |
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| Prestressed Concrete Tanks with Circumferential Tendons | |
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| Seismic Design of Liquid Containment Tank Structures | |
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| Step-by-Step Procedure for the Design of Circular Prestressed Concrete Tanks and Dome Roofs | |
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| Design of Circular Prestressed Concrete Water-Retaining Tank and Its Domed Roof | |
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| References | |
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| Problems | |
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| LRFD and Standard AASHTO Design of Concrete Bridges | |
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| Introduction: Safety and Reliability | |
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| AASHTO Standard (LFD) and LRFD Truck Load Specifications | |
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| Flexural Design Considerations | |
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| Shear Design Considerations | |
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| Horizontal Interface Shear | |
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| Combined Shear and Torsion | |
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| AASHTO-LRFD Flexural-Strength Design Specifications vs. ACI Code Provisions | |
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| Step-by-Step Design Procedure (LRFD) | |
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| LRFD Design of Bulb-Tee Bridge Deck | |
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| LRFD Shear and Deflection Design | |
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| Standard AASHTO Flexural Design of Prestressed Bridge Deck Beams (LFD) | |
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| Standard AASHTO Shear Reinforcement Design of Bridge Deck Beams | |
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| Shear and Torsion Reinforcement Design of a Box-Girder Bridge | |
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| LRFD Major Design Expressions in Sl Format | |
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| References | |
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| Problems | |
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| Seismic Design of Prestressed Concrete Structures | |
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| Introduction: Mechanism of Earthquakes | |
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| Spectreal Response Method | |
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| Equivalent Lateral Force Method | |
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| Seismic Shear Forces in Beams and Columns of a Frame: Strong Column-Weak Beam Concept | |
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| ACI Confining Reinforcements for Structural Concrete Members | |
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| Seismic Design Concepts in High Rise Buildings and Other Structures | |
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| Structural Systems in Seismic Zones | |
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| Dual Systems | |
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| Design Procedure for Earthquake-Resistant Structures | |
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| Sl Seismic Design Expressions | |
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| Seismic Base Shear and Lateral Forces and Moments by the IBC Approach | |
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| Seismic Shear Wall Design and Detailing | |
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| Example 13.3 Structural Precast Wall Base Connection Design | |
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| Design of Precast Prestressed Ductile Frame Connection in a High Rise Building in High-Seismicity Zone Using Dywidag Ductile Connection Assembly (DDC) | |
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| Design of Precast Prestressed Ductile Frame Connection in a High-Rise Building in High-Seismicity Zone Using a Hybrid Connector System | |
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| References | |
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| Problems | |
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| Computer Programs in Q-Basic | |
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| Unit Conversions, Design Information, Properties of Reinforcement | |
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| Selected Typical Standard Precast Double Tees, Inverted Tees, Hollow Core Sections, and AASHTO Bridge Sections | |
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| Index | |