Table 1 Summary of parametric study.
From: Control of Tensile Stress in Prestressed Concrete Members Under Service Loads
Section of type | Details of sectiona | Tensile strength of strand (f pu , MPa) | Yield strength of reinforcing bar (f y , MPa) | Effective prestress ratio (f pe /f pu ) | Reinforcing index (ω) | PPR (%) |
|---|---|---|---|---|---|---|
Rectangular | 12RB16 16RB40 | 1860 (Grade 270) | 420 (Grade 60) 550 (Grade 80) | 0.5 0.55 0.6 0.65 | 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 | 50 67 100 |
Number of rectangular sections: 432 | ||||||
Tee | 12T16 16T40 | 1860 (Grade 270) | 420 (Grade 60) 550 (Grade 80) | 0.5 0.55 0.6 0.65 | 0.0135 0.027 0.0405 0.054 0.0675 0.081 0.0945 0.108 | 50 67 100 |
Number of T sections: 384 | ||||||
Inverted Tee | 28IT20 40IT52 | 1860 (Grade 270) | 420 (Grade 60) 550 (Grade 80) | 0.5 0.55 0.6 0.65 | 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 | 50 67 100 |
Number of inverted T sections: 432 | ||||||
Total number of analyses: 1248 | ||||||