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The flat floor-exposure heuristic keys on dwelling_type: a flat defaults to has_exposed_floor=False (assuming a heated dwelling below). The Elmhurst Summary path lodges a ground-floor flat's vertical position as a "Ground floor" floor_type rather than the API floor_heat_loss=1 exposed code, and the mapper can label such a flat "Top-floor flat" — so the cascade dropped the ground floor entirely (a ground floor is in contact with the ground and carries heat loss). Treat a "ground floor" floor_type as a heat-loss floor, overriding the dwelling-level suppression upward — mirroring the existing "another dwelling below" party override downward. Worksheet-validated to 1e-4 on simulated case 45 (a ground-floor flat the mapper labelled "Top-floor flat"): floor (28a) 0 -> 25.38 W/K, fabric (33) 75.63 -> 101.0104, HTC (39) 112.93 -> 145.3579, all matching the P960 exactly; SAP 67.81 -> 62.52. RdSAP-21.0.1 corpus within-0.5 69.5% -> 69.7% (MAE 0.859 -> 0.854). Floors ratcheted. Pinned in test_heat_transmission (ground-floor billed + party-floor suppressed). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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| .. | ||
| __init__.py | ||
| appendix_h_solar.py | ||
| conservatory.py | ||
| dimensions.py | ||
| energy_requirements.py | ||
| fabric_energy_efficiency.py | ||
| fuel_cost.py | ||
| heat_transmission.py | ||
| internal_gains.py | ||
| mean_internal_temperature.py | ||
| mev.py | ||
| photovoltaic.py | ||
| rating.py | ||
| solar_gains.py | ||
| space_cooling.py | ||
| space_heating.py | ||
| utilisation_factor.py | ||
| ventilation.py | ||
| water_heating.py | ||