Syllabus - Prestressed Concrete Structures (CE 702(A))

Introduction – Theory and Behaviour

Basic concepts – Advantages – Materials required – Systems and methods of prestressing – Analysis of sections – Stress concept – Strength concept – Load balancing concept – Effect of loading on the tensile stresses in tendons – Effect of tendon profile on deflections – Factors influencing deflections – Calculation of deflections – Short term and long term deflections – Losses of prestress – Estimation of crack width.

Design for Flexure and Shear

Basic assumptions for calculating flexural stresses – Permissible stresses in steel and concrete as per I.S.1343 Code – Design of sections of Type I and Type II post-tensioned and pre-tensioned beams – Check for strength limit based on I.S. 1343 Code – Layout of cables in post-tensioned beams – Location of wires in pre-tensioned beams – Design for shear based on I.S. 1343 Code.

Deflection and Design of Anchorage Zone

Factors influencing deflections – Short term deflections of uncracked members – Prediction of long term deflections due to creep and shrinkage – Check for serviceability limit state of deflection. Determination of anchorage zone stresses in post-tensioned beams by Magnel’s method, Guyon’s method and IS1343 code – design of anchorage zone reinforcement – Check for transfer bond length in pre-tensioned beams.

Composite and Continuous Beams and Slabs

Analysis and design of composite beams – Methods of achieving continuity in continuous beams – One and two way slabs, flat slab. Analysis for secondary moments – Concordant cable and linear transformation – Calculation of stresses – Principles of design.

Miscellaneous Structures

Design of tension and compression members – Tanks, pipes, sleepers and poles – Partial prestressing – Definition, methods of achieving partial prestressing, merits and demerits of partial prestressing.