Module 1: Introduction:
1.1: History of Prestressed Reinforced Concrete, Need for prestressing, advantages of prestressed concrete.
1.2: Types of prestressing, Systems and devices.
1.3: Review of short and long-term behavior of concrete and prestressing steel,
1.4: Production process of prestressing strand, Types and mechanical properties of prestressing steel
Module 2: Losses in prestress
Losses in prestress-losses due to pre-tensioning and post-tensioning
2.1: Immediate losses: elastic shortening, anchorage slip, Friction losses
2.2: Time dependent losses: Relaxation of steel, Shrinkage and creep
2.3: Code provisions for considering losses.
Module 3: Analysis of members under Axial load
Analysis at transfer, Analysis at service, and analysis at ultimate loads. Load-displacement behaviour, Comparison of load-displacement behaviour of Reinforced concrete and prestressed concrete.
Module 4: Analysis and design for flexure
4.1: Analysis: At service loads: Stress concept, C-line/ Force concept, Load balancing concept
4.2: Moment-curvature analysis of prestressed concrete members, Layer by layer approach for moment-curvature analysis, Effect of various parameters on
behaviour
4.3: Kern point, pressure line, cracking moment, Control of crack widths, Camber and deflection, Stress analysis of flexural members
4.4: Flexural design of statically determinate beams (type 1 and 2), Magnel’s graphical method, Composite construction, Detailing requirements
Module 5: Analysis and design for shear and torsion
5.1: Analysis and design for shear, Failure modes, Shear resistance mechanism, Effect of prestress on shear behaviour, Code provisions, Design for shear.
5.2: Analysis and design for torsion, Types of torsion, Skew bending theory, Cracking torque-plasticity theory, Thin-walled tube anology, Space truss analogy, Code provisions, Design for torsion.
Module 6: Design for Bond and Anchorage zones
6.1: Anchorage zone stresses for post-tensioned members; Stress distribution in end block;
6.2: Design of anchorage zone; Transfer of prestress in pre-tensioned members;
6.3: Design of prestress members for bond and bearing.
Module7: Analysis and Design of Continuous Beams
7.1: Analysis and design of statically indeterminate structures- continuous beams.
7.2: Advantages of continuous members; Disadvantages of continuity in prestressing;
7.3: Determination of cable profile, concepts of linear transformation and concordance.
Module 8: Composite Construction
8.1: Introduction to Composite construction with precast prestressed members, types of composite construction.
8.2: Analysis of stresses; prestressed beams and cast in-situ reinforced concrete slab, Flexural and shear strength of composite sections.
8.3: Analysis and design of composite sections.
Module 9: Connections
9.1: Basics of connections; Reinforced concrete bearing in composite members.
9.2: Dapped-End beam connections; Reinforced concrete brackets and corbels.
9.3: Design for connections in precast prestressed concrete elements.
Module 10: Design of post-tensioned slabs
10.1: Introduction to post-tensioned slabs; Analysis and design considerations of post-tensioned slabs; Factors influencing in choosing slab thickness; Corrosion protection of unbonded tendons; load balancing; Distribution of tendons in Two-way slabs.
10.2: Equivalent frame method; Stress checks and control of cracking; Considerations for Edge and Corner panels.
10.3: Flexural capacity of PT slabs; Shear design of PT slabs; Calculation of deflections of slabs; Example on the design of post-tensioned Flat Plate.
10.4: Modeling aspects of post-tensioned slabs
Module 11: Applications of prestressing with Case Studies:
11.1: Application in bridges with real world case studies
11.2: Application of post-tensioning in buildings: Case Study on design of PT slab
11.3: Application in strengthening with real world case studies
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