Unit 1: Introduction to Pre-stressed Concrete (4)
Historic development – General principles of pre-stressing, pre-tensioning and post tensioning –
Advantages and limitations of pre-stressed concrete – Materials – High strength concrete and
high tensile steel their characteristics.
Unit 2: Methods of Pre-stressing (6)
I.S.Code provisions, Methods and Systems of Pre-stressing; Pre-tensioning and post tensioning
methods – Analysis of post tensioning - Different systems of pre-stressing like Hoyer System,
Magnel System Freyssinet system and Gifford – Udall System.
Unit 3: Losses of Pre-stress (6)
LOSSES OF PRESTRESS: Loss of pre-stress in pre-tensioned and post-tensioned members due
to various causes like elastic shortage of concrete, shrinkage of concrete, creep of concrete,
Relaxation of steel, slip in anchorage bending of member and frictional losses.
Unit 4: Elastic Analysis (4)
Analysis of sections for flexure; Elastic analysis of concrete beams pre-stressed with straight,
concentric, eccentric, bent and parabolic tendons.
Unit 5: Design for Flexure and Shear (6)
DESIGN OF SECTIONS FOR FLEXURE AND SHEAR: Allowable stress, Design criteria as
per I.S.Code – Elastic design of simple rectangular and I-section for flexure, shear, and principal
stresses – design for shear in beams – Kern – lines, cable profile.
Unit 6: Analysis Of End Blocks (5)
ANALYSIS OF END BLOCKS: by Guyon’s method and Mugnel method, Anchorage zone
stresses – Approximate method of design – Anchorage zone reinforcement – Transfer of prestress
pre-tensioned members.
Unit 7: Composite Sections (3)
Composite section: Introduction – Analysis of stress – Differential shrinkage – General designs
considerations.
Unit 8: Deflection (6)
DEFLECTIONS OF PRESTRESSED CONCRETE BEAMS: Importance of control of
deflections – factors influencing deflections – short term deflections of uncracked members
prediction of long term deflections.
Text Books:
1. Krishna Raju, Pre-stressed Concrete, Tata Mc.Graw Hill Publications, 2007.
2. Rajgopalan N., Pre-stressed Concrete, Alpha Sc International, 2005.
3. T.Y. Lin & Ned H.Burns, Design of Pre-stressed concrete structures, Wiley & Sons,
1981
1. Codes: BIS code on pre-stressed concrete, IS 1343.
Historic development – General principles of pre-stressing, pre-tensioning and post tensioning –
Advantages and limitations of pre-stressed concrete – Materials – High strength concrete and
high tensile steel their characteristics.
Unit 2: Methods of Pre-stressing (6)
I.S.Code provisions, Methods and Systems of Pre-stressing; Pre-tensioning and post tensioning
methods – Analysis of post tensioning - Different systems of pre-stressing like Hoyer System,
Magnel System Freyssinet system and Gifford – Udall System.
Unit 3: Losses of Pre-stress (6)
LOSSES OF PRESTRESS: Loss of pre-stress in pre-tensioned and post-tensioned members due
to various causes like elastic shortage of concrete, shrinkage of concrete, creep of concrete,
Relaxation of steel, slip in anchorage bending of member and frictional losses.
Unit 4: Elastic Analysis (4)
Analysis of sections for flexure; Elastic analysis of concrete beams pre-stressed with straight,
concentric, eccentric, bent and parabolic tendons.
Unit 5: Design for Flexure and Shear (6)
DESIGN OF SECTIONS FOR FLEXURE AND SHEAR: Allowable stress, Design criteria as
per I.S.Code – Elastic design of simple rectangular and I-section for flexure, shear, and principal
stresses – design for shear in beams – Kern – lines, cable profile.
Unit 6: Analysis Of End Blocks (5)
ANALYSIS OF END BLOCKS: by Guyon’s method and Mugnel method, Anchorage zone
stresses – Approximate method of design – Anchorage zone reinforcement – Transfer of prestress
pre-tensioned members.
Unit 7: Composite Sections (3)
Composite section: Introduction – Analysis of stress – Differential shrinkage – General designs
considerations.
Unit 8: Deflection (6)
DEFLECTIONS OF PRESTRESSED CONCRETE BEAMS: Importance of control of
deflections – factors influencing deflections – short term deflections of uncracked members
prediction of long term deflections.
Text Books:
1. Krishna Raju, Pre-stressed Concrete, Tata Mc.Graw Hill Publications, 2007.
2. Rajgopalan N., Pre-stressed Concrete, Alpha Sc International, 2005.
3. T.Y. Lin & Ned H.Burns, Design of Pre-stressed concrete structures, Wiley & Sons,
1981
1. Codes: BIS code on pre-stressed concrete, IS 1343.
No comments:
Post a Comment