Table 9.
Load and resistance factors, the prediction-to-test ratio θ_R distributions, recommended strength reduction factor ϕ.
| ACI31817 | EC218 | CATB | Prop.Eqn (WOR) | Prop.Eqn (WWR) | |
|---|---|---|---|---|---|
| Load factor | |||||
| Dead load | 1.2 | 1.35 | 1.2 | 1.2** | 1.2** |
| Live load | 1.6 | 1.5 | 1.6 | 1.6 | 1.6 |
| Best-fit distribution (Table *) | Lognormal | Lognormal | Lognormal | Lognormal | Lognormal |
| Mean (Table *) | 0.699 | 0.677 | 1.01 | 1.003 | 1.004 |
| CoV (Table *) | 0.372 | 0.353 | 0.085 | 0.207 | 0.192 |
| Target reliability | 3.559 | 3.818 | 5.29* | 3.5** | 3.5** |
| Evaluated strength reduction factor for the target reliability index | 0.58 | 0.78 | 1.0 | 0.76 | 0.78 |
*Target reliability evaluated for strength reduction factor .
**Load factors and target reliability are assumed to be identical to these of ACI318.