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Four mapper extensions, validated by 000480 closing to 1e-4 and large
gap reductions across 000477/000487/000516.
1. Room-in-Roof support. `ElmhurstSiteNotes` gains `RoomInRoof` +
`RoomInRoofSurface` dataclasses; extractor parses §8.1 (Flat
Ceiling / Stud Wall / Slope / Gable Wall / Common Wall) with
Length × Height + insulation + gable-type + measured-U cells.
Mapper produces a `SapRoomInRoof` with `detailed_surfaces`
attached to the Main bp: Stud Walls / Slopes / Flat Ceilings
route through Table 17 insulation thickness; Gable Walls split
between `gable_wall` (Party → Table 4 U=0.25) and
`gable_wall_external` (Sheltered → assessor-lodged U-value
override, e.g. 000487 Gable Wall 2 at U=0.86). Empty surfaces
(0×0 — the cohort lodges a full 5-pair table) and Common Walls
(handled by cascade's Simplified Type 2 geometry) are dropped.
`total_floor_area_m2` now includes the RR floor area.
2. Party-wall construction mapping. 000516 lodges "S Solid masonry /
timber / system build" which routes to SAP10 wall_construction=3
(Solid Brick → U=0.0 via Table 4). The previous mapper used the
same wall-type table as `wall_construction`, which lacked the
"S" code and fell through to None (cascade default 0.25). Split
into a dedicated `_elmhurst_party_wall_construction_int` keyed
on the party-wall category codes.
3. Roof "None" insulation. When the §8.0 Roofs subsection lodges
"Insulation N None" without a separate "Insulation Thickness"
line, treat thickness as 0 mm so the cascade picks Table 16
row 0 (U=2.30) rather than the age-band default. Closes the
29 W/K roof-loss gap on 000516.
4. `number_baths` lodgement. `SapHeating.number_baths` now reads
`survey.baths_and_showers.number_of_baths`. The cascade defaults
`None → has-bath` for the modal UK case, but explicit `0` lodged
on 000477/000480 (bathless dwellings, rare) drops the bath HW
demand line per Table 1b. Closes 000480's last ~0.3 SAP gap.
Cohort state after this slice (target 1e-4):
000474 0.0000 ✓ Slice 47
000477 +1.1161 Elmhurst floor_ach quirk (true vs false despite
"T Suspended timber" lodged on all certs)
000480 0.0000 ✓ THIS SLICE
000487 +1.1844 extractor still drops most §11 windows on this
layout variant
000490 0.0000 ✓ Slice 49
000516 +0.1774 roof-window separation by U-value heuristic
3/6 certs now closed at 1e-4. Pyright net-zero (35 baseline). Tests
756 pass (added `test_summary_000480_full_chain_sap_matches_worksheet_
pdf_exactly`).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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|---|---|---|
| .. | ||
| handler | ||
| tests | ||
| __init__.py | ||
| db_writer.py | ||
| elmhurst_extractor.py | ||
| extractor.py | ||
| local_runner.py | ||
| parser.py | ||
| pdf.py | ||