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The EPC renders a recent-band as-built wall as "<material>, as built, insulated (assumed)". The API mapper populates epc.walls with that string, and heat_transmission's wall_ins_present gate keyed off the "insulated" substring → routed the wall to the RdSAP 50 mm "insulation of unknown thickness" bucket (e.g. sandstone band J U=0.25) instead of the as-built age-band row (U=0.35). Per RdSAP 10 Table 8/9 footnote the 50 mm row applies ONLY when insulation is "known to have been increased subsequently (otherwise 'as built' applies)". An "as built ... (assumed)" description is the EPC's age-band assumption — it only renders on RECENT bands (an old band renders "no insulation (assumed)"), so the as-built row applies. Genuine retrofit is signalled by wall_insulation_type (External/Internal/Filled), which the gate still checks independently. Worksheet-validated by two new Elmhurst worksheets, both As Built band J: - simulated case 9: sandstone → (29a) U 0.35 - simulated case 10: solid brick → (29a) U 0.35 both the as-built row, NOT 50 mm (0.25). Fix: restrict the description-based gate to genuine retrofit via the new local `_described_as_retrofit_insulated` (excludes "as built"/"(assumed)"). The cavity filled-row routing inside `u_wall` (which uses `_described_as_insulated` directly) is untouched — the 3 cavity API certs (0390/0535/7536) are unaffected. test_heat_transmission: the old `..._uses_50mm_row` test asserted 50 mm via an IMPOSSIBLE band-B + "insulated (assumed)" combination; corrected to a valid recent-band (J) scenario asserting the as-built row (35 W/K). Golden 0240: walls 24.45 → 34.23 W/K (U 0.25 → 0.35). SAP integer 72 unchanged; PE residual re-pinned +1.8687 → +5.5044, CO2 +0.0907 → +0.2757. This spec-correct fix REMOVED the wall under-count that was masking the Ext1 vaulted-roof over-count (cascade U 0.68 via the same "insulated (assumed)" description vs case-9 sloping-ceiling 0.25) — that roof over-count is the next slice; fixing both lands SAP cont ≈ 72.31 (= Elmhurst case 9). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> |
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| domain | ||
| infrastructure | ||
| orchestration | ||
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| utilities | ||
| __init__.py | ||
| conftest.py | ||
| test_lambda_packaging.py | ||