Table 3.
The failure mode, bending moment, and shear capacity at ultimate as per CSA/S806 [16].
| Parameter | Ultimate Moment CSA/S806 (kN·m) | Shear Force at Ultimate Moment (kN) | Shear Strength CSA/S806 (kN) | Failure Mode | ||
|---|---|---|---|---|---|---|
| Variable Concrete Strength, (MPa) | Concrete Strength | 30 | 79.3 | 120.2 | 130.7 | flexural |
| 40 | 93.6 | 141.9 | 135.1 | Shear | ||
| 50 | 105.4 | 159.7 | 138.5 | |||
| 60 | 115.2 | 174.6 | 139.4 | |||
| 70 | 123.4 | 187.0 | 141.9 | |||
| 80 | 130.3 | 197.5 | 144.2 | |||
| Variable Stirrup Spacing, (mm) | 40 MPa | 150 | 70.9 | 107.5 | 75.4 | Shear |
| 100 | 70.9 | 107.5 | 78.3 | |||
| 75 | 70.9 | 107.5 | 78.7 | |||
| 80 MPa | 115 | 94.1 | 142.5 | 91.4 | ||
| 76.6 | 94.1 | 142.5 | 92.4 | |||
| 57.5 | 94.1 | 142.5 | 93.4 | |||
| Variable Longitudinal Reinforcement Ratio, (%) | 40 MPa | 0.4 | 53.6 | 81.3 | 45.5 | Shear |
| 0.8 | 70.9 | 107.5 | 75.0 | |||
| 1.0 | 77.2 | 117.0 | 83.2 | |||
| 1.2 | 82.6 | 125.2 | 90.0 | |||
| 1.4 | 87.3 | 132.3 | 95.7 | |||
| 1.6 | 91.5 | 138.7 | 100.8 | |||
| 80 MPa | 0.4 | 70.0 | 106.1 | 54.4 | Shear | |
| 0.8 | 94.1 | 142.5 | 92.5 | |||
| 1.0 | 103.0 | 156.1 | 102.9 | |||
| 1.2 | 110.8 | 167.9 | 111.4 | |||
| 1.4 | 117.7 | 178.3 | 118.7 | |||
| 1.6 | 123.9 | 187.7 | 125.1 | |||