PT Tendon Calculator
Free post-tensioning tendon elongation and prestress losses calculator per ACI 318-19 and PTI DC20.9. Calculate friction losses, anchor set loss, elongation, and view interactive force diagrams for individual tendons.
Features
- Step-by-step wizard for strand properties, duct friction, and tendon profile
- Friction loss calculation per ACI 318 Table 20.3.2.5.1
- Anchor set (seating) loss with influence length
- Interactive SVG tendon profile with draggable control points
- Force diagram showing friction and post-seating stress envelopes
- Elongation measurement with field tolerance checking
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Engineering References
- ACI 318-19 Chapter 20 (Prestress Losses)
- PTI DC20.9 (Tendon Profile Geometry)
- ACI Table 20.3.2.5.1 (Friction Coefficients)
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