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Calculation Basis
Assumptions & Limits
- Preset values speed up the setup but do not replace final section or material verification.
- The page is designed for fast deflection and reaction checks.
- Local code rules, long-term effects, and connection details still need separate review.
Reference Basis
- Documentation: Methodology
- Documentation: Engineering Review
- Roark's Formulas for Stress and Strain
- Mechanics of Materials references
Prestressed Concrete Reference Setup
| System type | Prestressed concrete beam |
| Model basis | Equivalent elastic stiffness estimate |
| Preset effective modulus | 34 GPa |
| Preset effective inertia | 95000 cm^4 |
| Preset support case | Simply supported beam |
| Preset loading | Uniform service load |
| Use case | Preliminary serviceability estimate |
Engineering Notes
- This page is not a full prestress-loss, tendon-profile, cracking, creep, and staged-construction design model.
- The default values help estimate whether beam flexibility is likely to be a serviceability concern.
- For real design, effective stiffness and deflection behavior must be tied to the actual tendon geometry, prestress force, losses, construction stage, and code method.
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