CONTENTS
CHAPTER 1: INTRODUCTION 1
1.1 General 1
1.2 Historical background 1
1.3 Pre-stressing System 2
1.3.1 Pre-tensioning system 2
1.3.2 Post-tensioning system 3
1.3.3 Thermo-Electric pre-stressing 4
1.3.4 Chemical pre-stressing 4
1.4 Materials for pre-stressed concrete 5
1.4.1 High strength concrete 5
1.4.2 High tensile steel 5
1.5 Advantage of pre-stressing 6
1.6 Detail of Project 7
1.7 Scope of work 7
CHAPTER 2: LITERATURE REVIEW 8
CHAPTER 3: DETAILED METHODOLOGY 11
CHAPTER 4: ANALYSIS AND DESIGN PROCEDURE 13
4.1 Data consideration 13
4.2 Design of RCC beam 16
4.2.1 Design of Singly Reinforced section 16
4.2.2 Design of Doubly Reinforced section 17
4.3 Design of Column 18
4.4 Design of Retaining Wall 18
4.5 Design of Raft Foundation 19
4.6 Design of Swimming pool 19
4.7 Losses of pre-stress 20
4.7.1 Cable profile 20
4.7.2 Calculation of losses 21
4.7.3 Friction loss 22
4.7.4 Anchorage slip 23
4.7.5 Elastic shortening of concrete 23
4.7.6 Shrinkage loss 24
4.7.7 Creep loss 25
4.7.8 Relaxation of stress in steel 25
4.8 Design of pre-stress beam 27
4.8.1 Stresses at section 27
4.8.2 Design of flexure member 28
4.8.3 Serviceability check 30
4.8.4 Concept of load balancing 31
CHAPTER 5: RESULTS AND COMPARISON 33
5.1 Results of post-tensioning beam 33
5.2 Comparison of conventional and Post-tensioning beam 35
5.2.1 Comparison of 2nd floor 35
5.2.2 Comparison of 4th floor 36
CHAPTER 6: CONCLUSION AND FUTURE SCOPE 39
6.1 Conclusions 39
6.2 Future scope 39
CHAPTER 7: REFERENCES 40
ANNEXURES 42