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domain/building_geometry.gross_heat_loss_wall_area(epc, identifier) sums heat_loss_perimeter x room_height across a building part's storeys — the heat-loss wall area (party walls excluded by construction), not total wall area. Lives outside the calculator so Modelling cost quantities can reuse it; the calculator computes the same quantity inline today and should be DRY'd onto this later (coordinated with the calculator branch). Pinned at 45.93 m^2 against the 000490 MAIN part. Toward #1155 cost (behaviour 4). pyright strict clean. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
22 lines
869 B
Python
22 lines
869 B
Python
"""Behaviour of shared building geometry derived from EpcPropertyData —
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reusable outside the SAP calculator (e.g. for Modelling cost quantities)."""
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from datatypes.epc.domain.epc_property_data import BuildingPartIdentifier
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from domain.building_geometry import gross_heat_loss_wall_area
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from tests.domain.sap10_calculator.worksheet._elmhurst_worksheet_000490 import (
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build_epc,
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)
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def test_gross_heat_loss_wall_area_sums_perimeter_times_height_per_storey() -> None:
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# Arrange
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# 000490 MAIN: floor 0 (perimeter 7.42 m x height 2.95 m) + floor 1
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# (7.42 m x 3.24 m) = 21.889 + 24.0408 = 45.93 m^2. Party walls are
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# excluded by construction (heat-loss perimeter, not total perimeter).
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epc = build_epc()
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# Act
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area: float = gross_heat_loss_wall_area(epc, BuildingPartIdentifier.MAIN)
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# Assert
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assert abs(area - 45.93) <= 0.01
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