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0ff814451f
Adds the three Table 17 lookups for rooms in roof where insulation
thickness is known. Each column of Table 17 splits into (a) mineral
wool / EPS slab vs (b) PUR or PIR rigid foam — pinned verbatim from
spec page 44 across all 16 thickness rows (0, 12, 25, ..., >400).
The three public functions share a single private `_u_rr_table_17` row
picker indexed by (column-a, column-b) pair, so a `u_rr_slope`,
`u_rr_flat_ceiling`, or `u_rr_stud_wall` call boils down to one row
descent through the same tuple-of-tuples. Falls back to
`u_rr_default_all_elements` (Table 18 col 4) when thickness is None —
matches the spec text at §5.11.3 / §5.11.4 ("U-values in Table 18 are
used when thickness of insulation cannot be determined").
Reference: RdSAP 10 (10-06-2025) Table 17 page 44; key on same page.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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| .. | ||
| domain | ||
| fetchers | ||
| repos | ||
| utils | ||
| 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/.