@lambert
1. What is PS,HS,PI and DH stand for?.
It is just name of different pile type. You can define it with your own way. The table stored these values is designed for your convenience. You can ignore it if you input Ag, Ig, Zg manually.
2. Is there a general rule to estimate fci' at transfer, fci at transfer and fc at service given fc'?
From my experience together with codes in my home country(Thailand), fci = 0.6·fci' and fc = 0.45·fc'
3. How to determine the maximum allowable prestressing force (in kN) so that the prestressing steel will not break? Is this the same with the breaking strength on ASTM Standard?
Yes, it is the same.
4. How can we know if the section can adequately support the given bending moment (if there is)???. Is it by performing interaction diagram like in R.C.???
No interaction diagram, just check it as beam. Critical moment, practically, is at transportation stage.
1. What is PS,HS,PI and DH stand for?.
It is just name of different pile type. You can define it with your own way. The table stored these values is designed for your convenience. You can ignore it if you input Ag, Ig, Zg manually.
2. Is there a general rule to estimate fci' at transfer, fci at transfer and fc at service given fc'?
From my experience together with codes in my home country(Thailand), fci = 0.6·fci' and fc = 0.45·fc'
3. How to determine the maximum allowable prestressing force (in kN) so that the prestressing steel will not break? Is this the same with the breaking strength on ASTM Standard?
Yes, it is the same.
4. How can we know if the section can adequately support the given bending moment (if there is)???. Is it by performing interaction diagram like in R.C.???
No interaction diagram, just check it as beam. Critical moment, practically, is at transportation stage.