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a0b6a952c3
Completes #1159 end-to-end with solid and suspended-floor before/after cascade pins on cert 001431, both closing at delta 0.000000. Adds floor_insulation_type_str to BuildingPartOverlay (the generic field-fold applicator picks it up with no change) and has recommend_floor_insulation set it to "Retro-fitted". Insulating an as-built floor re-lodges its insulation as retro-fitted; the calculator keys on this for a suspended timber floor's sealed/unsealed determination (cert_to_inputs.py: "retro" + no U-value supplied → sealed). Without it the suspended-floor cascade left a +1.40 SAP gap (the floor stayed "unsealed", wrong U-value); with it the cascade closes exactly. Solid floors are unaffected by the seal logic and stay at delta 0; both Elmhurst after-certs lodge "Retro-fitted", so setting it uniformly is faithful. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
41 lines
1.4 KiB
Python
41 lines
1.4 KiB
Python
"""The Simulation Overlay (`EpcSimulation`) — the change a single Measure
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Option makes to a Property's EpcPropertyData.
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An all-optional partial mirror of EpcPropertyData / SapBuildingPart, covering
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the retrofit-relevant surface only (wall fields first). It is *not* an
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EpcPropertyData — composition, not inheritance — and carries no scores.
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Building parts are targeted by `BuildingPartIdentifier` so a measure addresses
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the exact `SapBuildingPart` (the main wall vs an extension). See CONTEXT.md.
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"""
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from dataclasses import dataclass, field
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from typing import Mapping, Optional
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from datatypes.epc.domain.epc_property_data import BuildingPartIdentifier
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@dataclass(frozen=True)
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class BuildingPartOverlay:
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"""All-optional partial of `SapBuildingPart` (wall surface first).
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A `None` field means "leave the baseline value unchanged".
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"""
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wall_insulation_type: Optional[int] = None
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roof_insulation_thickness: Optional[int] = None
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floor_insulation_thickness: Optional[int] = None
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floor_insulation_type_str: Optional[str] = None
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def _no_building_parts() -> dict[BuildingPartIdentifier, BuildingPartOverlay]:
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return {}
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@dataclass(frozen=True)
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class EpcSimulation:
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"""A Simulation Overlay: the per-building-part changes a Measure Option
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makes, keyed by `BuildingPartIdentifier`."""
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building_parts: Mapping[BuildingPartIdentifier, BuildingPartOverlay] = field(
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default_factory=_no_building_parts
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)
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