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The Elmhurst Summary PDF §8.1 "Room(s) in Roof" per-surface table publishes the
gable-wall environment column with one of four values:
Party → §8.1 party-wall row
Sheltered → §8.1 sheltered external row
Exposed → §8.1 exposed external row
Connected (to heated space) → §8.1 internal partition
Per RdSAP 10 §3.10 (PDF p.30-35) "Detailed Room-in-Roof" + Table 4 (p.22)
"Heat-loss surface variants":
- Exposed gable wall → external wall at the lodged U-value
- Sheltered gable wall → external wall at the lodged U-value
- Party gable wall → party wall at U=0.25 (Table 4 row 2)
- Connected gable wall → internal partition to heated space, NOT a
heat-loss surface
The extractor was only capturing `gable_type ∈ {"Party", "Sheltered",
"Connected to heated space"}` — neither `"Exposed"` (every external gable
on cert 000565) nor the plain `"Connected"` string (the actual PDF
lodging value, vs the verbose "Connected to heated space" form used on
other Summary schemas) was recognised. Both fell through with
`gable_type=None`, masking the downstream cascade gap (cert 000565
BP[0] Main Gable Wall 1 is lodged "Exposed" at U=0.35 but extracted
as untyped → mapper routes to `gable_wall` party at U=0.25, vs the
worksheet's "Roof room Main Gable Wall 1" at U=0.35).
This slice closes the extractor side only:
backend/documents_parser/elmhurst_extractor.py:_parse_rir_surface_row
expands its `gable_type` lookup set to include "Exposed" and the
plain "Connected" lodging value.
Mapper-side: `_map_elmhurst_rir_surface` (datatypes/epc/domain/mapper.py)
preserves cert 9501's behaviour — its flat-RR elif previously hinged
on `surface.gable_type is None and is_flat`; now extends to
`surface.gable_type in (None, "Exposed") and is_flat` so the same
flat-RR routing fires whichever lodging shape the Summary PDF uses.
Net cascade impact: zero. Cert 9501 (top-floor flat) retains its
RR-gables-as-external routing. Cert 000565 (house) keeps falling
through to the default `gable_wall` (party at U=0.25) routing for
"Exposed" + "Connected" gables — the next slice in the block reroutes
those to external walls + drops Connected surfaces per RdSAP 10
Table 4. This commit is pure data-extraction completion; pin
movement lands when S0380.84 wires the mapper through.
Test baseline: 555 pass + 8 expected `test_sap_result_pin[000565-*]`
fails (was 554 + 8 at S0380.82; one new test pins the spec rule).
Pyright net-zero on touched files (45 errors, matches baseline).
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 | ||