Load cases used to calculate hydrodynamic loads – values for drag force coefficients (CD, CD0) are derived from their respective references
| Tsunami load case | Reference | Description of loading | Determination of flow conditions as a function of inundation depth, h | Determination of force (Equation) |
|---|---|---|---|---|
| LC1 | MLIT 2570 (MLIT, 2011b) | Equivalent hydrostatic pressure, <500 m from the water source with shelter from the incoming wave | NA (no further parameters required) | (2) a = 1·5 |
| LC2 | Equivalent hydrostatic pressure, >500 m from the water source with shelter from the incoming wave | (2) a = 2 | ||
| LC3 | Equivalent hydrostatic pressure, no shelter from the incoming wave | (2) a = 3 | ||
| LC4 | ASCE 7-16 (ASCE, 2016) | Hydrodynamic drag | Grade line analysis (Figure 7) R = 15 m uniform 1:20 beach n = 0·04 | (5) CD = 2 |
| LC5 | Bore impact | (6) | ||
| LC6 | Foster et al. (2017) | Hydrodynamic drag accounting for flow regime (Fr), sparse buildings | (7) CD0 = 1·9 b/w = 0·1 | |
| LC7 | Hydrodynamic drag accounting for flow regime (Fr), dense buildings | (7) CD0 = 1·9 b/w = 0·6 |
| Tsunami load case | Reference | Description of loading | Determination of flow conditions as a function of inundation depth, | Determination of force (Equation) |
|---|---|---|---|---|
| LC1 | MLIT 2570 ( | Equivalent hydrostatic pressure, <500 m from the water source with shelter from the incoming wave | NA (no further parameters required) | (2) |
| LC2 | Equivalent hydrostatic pressure, >500 m from the water source with shelter from the incoming wave | (2) | ||
| LC3 | Equivalent hydrostatic pressure, no shelter from the incoming wave | (2) | ||
| LC4 | ASCE 7-16 ( | Hydrodynamic drag | Grade line analysis ( | (5) |
| LC5 | Bore impact | (6) | ||
| LC6 | Hydrodynamic drag accounting for flow regime (Fr), sparse buildings | (7) | ||
| LC7 | Hydrodynamic drag accounting for flow regime (Fr), dense buildings | (7) |
b, building width; w, channel width