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General Principles

- Compressive stress due to External Moment
- Cross Sectional Area when Compressive Stress is Given
- Distance from Center of Gravity of Section to Center of gravity of Strands When Stress is Known
- External Moment with a Known Compressive Stress
- Length of Span when Uniform Load is Known
- Moment of Inertia when Compressive Stress is Determined
- Moment Produced due to Prestress
- Prestressing Force when Compressive Stress is Given
- Prestressing force When Uniform Load is Known
- Resulting Stress due to Moment and Prestressing Force
- Resulting Stress due to Moment, Prestress and Eccentric Strands
- 6 More formulas!

Loss of Prestress

- Area of Concrete Section hen Prestress Drop is Given
- Area of Concrete Section when Transformed Area is Calculated
- Area of Prestressing Steel when Transformed Area is Given
- Change in Strain in Tendon when Prestress Drop is Known
- Initial Strain in Steel for Known Strain due to Elastic Shortening
- Initial Strain in Terms of Initial Prestressing Force
- Modular Ratio when Prestress after Immediate Loss is Known
- Prestress Drop
- Prestress Drop when Initial Prestress Force is Given
- Prestress Drop when Modular Ratio is Known
- Prestress Drop when Pressure After Immediate Loss is Known
- 11 More formulas!

Materials

- Creep Coefficient in European Code
- Empirical Formula for Secant Modulus Proposed by Hognestad in ACI Code
- Empirical Formula for Secant Modulus Proposed by Jensen
- Empirical Formula for Secant Modulus Using ACI Code Provisions
- Instantaneous Strain when Cc is Given
- Secant Modulus for Normal Weight of Concrete
- Total Strain
- Total Strain when Creep Coefficient is Given

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