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e1348c424b
For flats, `EpcPropertyData.dwelling_type` needs a "Top-floor" /
"Mid-floor" / "Ground-floor" prefix so the cascade's
`_dwelling_exposure` (cert_to_inputs.py) gates floor + roof party-
surface routing correctly per RdSAP 10 §5. Before Slice 99a, the
broken `built_form` ("2.0 Number of Storeys:") meant cert 9501's
`dwelling_type` was "2.0 Number of Storeys: flat" — never matched
any flat-prefix in the cascade, so the cert was treated as a fully-
exposed dwelling (worksheet had floor U=0 / party-ceiling-down, but
cascade routed both as exposed → Δ +9.25 W/K on floor alone). After
99a's empty-attachment fix the prefix was just " flat" — still no
match.
Slice 99b composes the position prefix from the Summary's lodged
floor location + RR presence:
- floor.location lodges "dwelling below" → floor is party
- + RR present → Top-floor (roof exposed)
- + no RR → Mid-floor (roof party)
- floor.location doesn't lodge dwelling below → Ground-floor
For cert 9501: floor.location="A Another dwelling below" + RR
present (cert lodges Room-in-Roof with gable walls + flat ceiling).
Resulting `dwelling_type` = "Top-floor flat" — matches the cascade's
`_dwelling_exposure` "top-floor" prefix → has_exposed_floor=False,
has_exposed_roof=True, the worksheet's exposure shape.
Houses keep the historical contract: `f"{built_form}
{property_type.lower()}"` — cohort hand-builts and the 2 boiler
chain tests (001479 + 0330) unchanged.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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|---|---|---|
| .. | ||
| domain | ||
| loaders | ||
| schema | ||
| search | ||
| surveys | ||
| __init__.py | ||
| construction_age_band.py | ||
| efficiency.py | ||
| floor.py | ||
| fuel.py | ||
| heating_controls.py | ||
| hotwater.py | ||
| main_heating.py | ||
| property_type_built_form.py | ||
| roof.py | ||
| walls.py | ||
| windows.py | ||