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Khalim Conn-Kowlessar ac68cf88a0 Slice 23: 000516 detailed RR + exposed_floor + door_count fixture lodgement 
Mirrors S16a for 000516 — the second Simplified-Type-1 fallback
fixture in the cohort. PDF lodges detailed §3.10 RR + exposed Main
floor + 2 doors; fixture previously lodged only `SapRoomInRoof(
floor_area=19.02)` Simplified fallback + `is_exposed_floor=False` +
`door_count=1`.

Lodgement changes:

- `detailed_surfaces` on the Main RR: 7 surfaces per PDF §3 lines
  (30)/(32) — 1 flat ceiling 3.56 m² uninsulated, 2 stud walls 3.88
  m² @ 100mm mineral_wool (Table 17 col 3a → U=0.36), 2 slopes 6.41
  m² uninsulated (U=2.30), 2 gable walls 13.11 m² treated as party
  at U=0.25.
- `is_exposed_floor=True` on Main floor=0 (28b "Exposed floor Main
  35.76 × U=1.20"). Floor sits over an unheated space, not earth.
- `roof_insulation_thickness=0` on Main — PDF (30) "External roof
  Main 15.56 × U=2.30" UNINSULATED Table 16 "none" row.
- `door_count` 1 → 2 to match PDF (26) total area 3.70 m² = 2 × 1.85.

Impact on §3 cascade pins:

  pin       | before slice 23 | after slice 23
  ----------|-----------------|---------------
  LINE_31   | +20.37 m² Δ     | +0.0025 m² Δ (sub-display)
  LINE_33   | -6.75 W/K Δ     | -0.82 W/K Δ (rooflight gap, slice 25)
  LINE_36   | +3.06 W/K Δ     | +0.0004 W/K Δ (sub-display)
  LINE_37   | -6.75 W/K Δ     | -0.82 W/K Δ

Remaining 0.82 W/K LINE_33 gap is the rooflight: PDF lodges a 1.18 m²
roof window on line (27a) at U_eff=2.9930 (Table 24 metal-frame
pre-2002 raw 3.4 + curtain). Our §3 cascade doesn't yet incorporate
roof windows — they're defined in SECTION_6_ROOF_WINDOWS for solar
gains but not in the heat-transmission path. Slice 25 will add (27a)
line-ref handling.

§3 cascade pin count unchanged at 23 FAIL / 1 PASS — the 000516
residuals dropped 10× but still > abs=1e-4. The downstream §4-§12
cascade for 000516 likely tightens once §3 closes.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2026-05-22 23:37:28 +00:00
..
domain Slice 23: 000516 detailed RR + exposed_floor + door_count fixture lodgement 2026-05-22 23:37:28 +00:00
fetchers added potential file scaffolding: 2026-05-15 10:56:53 +00:00
repos added potential file scaffolding: 2026-05-15 10:56:53 +00:00
utils added potential file scaffolding: 2026-05-15 10:56:53 +00:00
README.md added potential file scaffolding: 2026-05-15 10:56:53 +00:00

README.md

Shared packages

Workspace packages consumed by services/*. Each package is its own Python distribution with its own pyproject.toml; services import via the workspace dependency mechanism ({ workspace = true }).

Package Purpose
domain/ Shared domain types — Property, BaselinePerformance, Plan, Scenario, EpcPropertyData, etc. No persistence, no IO, no business logic.
repos/ Persistence layer — one repo per aggregate. Owns the SQL. Depends on domain.
fetchers/ External API clients (gov EPC, Ofgem, Google Solar, etc.). Depend on domain for response shapes.
utils/ Cross-cutting infra — logging, S3, CloudWatch URL builders, SQS task helpers.

Adding a new shared package

Only when a real second consumer materialises. Don't pre-shatter (repos-epc, repos-property, ...) — split when a deployment needs to drop a dep, not before.

See ../ara_backend_design.md §11 for the broader monorepo layout and ../CONTEXT.md for the domain glossary that names the types living in domain/.