StrucLab
| Project | — | Job No. | — |
| Calculation | Slab Post-Tension Rate | By | — |
| Reference | Estimating rate (indicative) | Date | 6 June 2026 |
Slab Post-Tension Rate
Estimates & Quantities · PT strand mass (kg/m², kg/m³) and average applied prestress for a PT slab or beam
7.85PT rate by area (kg/m²)
31.4PT rate by volume (kg/m³)
4.38Avg applied stress (MPa)
Breakdown
Strand density 7,850 kg/m³.
| Total strands | 10 | 2 tendons × 5 strands |
| Strand mass / m | 7.85 kg/m | strands × 100 mm² × 7,850 |
| By area | 7.85 kg/m² | per 1,000 mm width strip |
| By volume | 31.4 kg/m³ | / (250×1,000 section) |
Average applied prestress
Indicative — assumes 30% total losses (draped).
| Jacking force / strand | 156.4 kN | 0.85 × MBL (184 kN) |
| After losses | 109.5 kN | − 30% losses |
| Avg applied stress | 4.38 MPa | over 250×1,000 section |