Khalim Conn-Kowlessar ea35bed24c S0380.236: extension party-wall type read independently of "As Main Wall" ... RdSAP 10 §3.3: "As Main Wall: Yes" makes an extension inherit the main dwelling's external wall CONSTRUCTION only — the party wall type is lodged separately per building part in the Summary §7 block and may differ. `_extract_extensions` was copying `main_walls.party_wall_type` into the inherited WallDetails, so every extension reused the main's party wall U. On the double_glazing fixture (Summary_001431) the Main lodges party "CU Cavity masonry unfilled" (SAP10 wall_construction 4 → u_party_wall 0.5) but the 1st Extension lodges "U Unable to determine" (→ 0 → RdSAP default 0.25). Pre-fix both building parts used 0.5, inflating worksheet (32) party-wall heat loss by 6.56 W/K (Ext1 26.25 m² × 0.25). After the fix worksheet (32) is exact: ours 32.573 vs worksheet 32.5725. Now reads the extension's own "Party Wall Type" from its §7 chunk, falling back to the main's only when the extension lodges none. Adds a fixture + test asserting Main=4 / Ext=0 with distinct u_party_wall. Suite 2413 pass; no cohort regression. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>		2026-06-05 09:19:43 +00:00
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fixtures	S0380.236: extension party-wall type read independently of "As Main Wall"	2026-06-05 09:19:43 +00:00
__init__.py	Map to RdSapSiteNotes from site notes JSON 🟥	2026-04-16 13:54:03 +00:00
test_elmhurst_end_to_end.py	Slice S0380.17: map Elmhurst §11 glazing-type labels to SAP10 codes	2026-05-27 23:05:52 +00:00
test_elmhurst_extractor.py	fix(extractor): drop windows-table header remnant from first window glazing type	2026-06-02 22:54:49 +00:00
test_end_to_end.py	P6.1 follow-on: unbox BuildingPartIdentifier at backend boundaries	2026-05-20 09:58:23 +00:00
test_extractor.py	Handle wall thickness "Unmeasurable" 🟩	2026-04-30 16:41:16 +00:00
test_heating_systems_corpus.py	S0380.185: record CH6 pin-forever proof — distribution-loss is a Summary-export gap	2026-06-02 19:21:28 +00:00
test_pdf.py	rename example site notes to PasHub_ and add Elmhurst example	2026-04-24 13:01:51 +00:00
test_summary_pdf_mapper_chain.py	S0380.236: extension party-wall type read independently of "As Main Wall"	2026-06-05 09:19:43 +00:00