JNTUK B.Tech Prestressed Concrete gives you detail information of Prestressed Concrete R13 syllabus It will be help full to understand you complete curriculum of the year.
Lecture : 3 hrs/Week : —– Internal Assessment : Marks
Tutorial : 1Hrs / Week : —– Semester End Examination : Marks
Practical : — Credits : 3
Course Learning Objectives
The objective of this course is:
- Familiarize Students with concepts of prestressing.
- Equip student with different systems and devices used in prestressing.
- Understand the different losses of prestress including short and long term losses.
- Familiarize students with the analysis and design of prestressed concrete members under flexure, shear and torsion.
Course Outcomes
At the end of this course the student will be able to
- Understand the different methods of prestressing.
- Estimate the effective prestress including the short and long term losses.
- Analyze and design prestressed concrete beams under flexure and shear.
- Understand the relevant IS Codal provisions for prestressed concrete
SYLLABUS
UNIT-I : Basic concepts of Prestressing– Advantages and Applications of Prestressed Concretes, High Strength Concrete- Permissible Stresses, Shrinkage, Creep, Deformation Characteristics, High strength Steel- Types, Strength- Permissible Stresses- Relaxation of Stress, Stress Corrosion- Durability, Fire Resistance, Cover Requirements.
UNIT-II : Prestressing Systems– Introduction, Tensioning devices, Pre-tensioning Systems, Post tensioning Systems, Basic Assumptions in Analysis of prestress and design, Analysis of prestress, Resultant Stresses at a section-pressure line- Concepts of load balancing- Stresses in Tendons, Cracking moment.
UNIT-III : Losses of Pre-stressing– Loss of Pre-stress in pre-tensioned and post tensioned members due to various causes -Elastic shortening of concrete, shrinkage of concrete, creep of concrete, Relaxation of steel, slip in anchorage, differential shrinkage- bending of members and frictional losses- Total losses allowed for design.
UNIT-IV : Design for Flexural resistance– Types of flexural failure – Code procedures- Design of sections for flexure- Control of deflections- Factors influencing- Prediction of short term and long term deflections.
UNIT-V : Design for Shear and Torsion– Shear and Principal Stresses- Design of Shear reinforcements- Codal Provisions- Design for Torsion, Design for Combined bending, shear and torsion.
UNIT-IV : Transfer of Prestress in pre tensioned members– Transmission length- Bond stresses- end zone reinforcement- Codal provisions- Anchorage zone Stresses in Post tensioned members- Stress distribution in end block- Anchorage Zone reinforcement.
TEXT BOOKS
- ‘Prestressed Concrete’ by N. Krishna Raju, Tata McGraw hill
- ‘Prestressed Concrete’ by S. Ramamrutham
REFERENCES
- ‘Prestressed Concrete’ by P. Dayaratnam
- ‘Prestressed Concrete’ by T. Y. Lin & Burns, Wiley Publications
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