IFC: 140 stated IfcSpace floor quantities; 158 walls selected by IfcRelSpaceBoundary PHYSICAL/EXTERNAL, area from stated NetSideArea; 95.93 m² windows and 263.53 m² exterior doors at OverallWidth × OverallHeight; 516.52 m² ground-slab union; 613.01 m² roof plan (flat Dach-1…5 plus 12° entrance canopies). All 140 rooms are assumed conditioned. Thermal properties, climate and operation are assumptions.
A-CLIMATE · Seoul climate, not a Karlsruhe weather series.
KIT publishes Smiley West as a terraced-house validation example. IfcSite coordinates are an authoring default and are not treated as a surveyed energy climate. The engine currently has Korean regional climates only.
A-ERA-UNDATED · 2000–2009 Korean apartment tables and 2001 code year; use code 02000; concrete-family structure 21.
The IFC header dates the 2017-01-23 ArchiCAD 20 export, not construction. No construction year is established. 2000–2009 is the same mapping used for FZK Haus, the sibling KIT example, rather than a 2020+ table that would flatter an undated validation house.
A-CONDITIONED-SPACES · All 140 IfcSpace are conditioned, including 30 cellar rooms (444.39 m²).
Room quantities do not establish operating schedules or conditioned status. Including unconditioned cellars would understate energy intensity.
A-ENVELOPE-BOUNDARY · Exterior walls are the 158 IfcRelSpaceBoundary PHYSICAL/EXTERNAL element references; area is each wall's stated NetSideArea.
554 external physical space-boundary surfaces did not resolve as readable polylines. Membership does not require those unread surfaces and does not consume their area. IsExternal is reported and never used as a filter.
A-WALL-U · Whole-building opaque wall U = 0.47 W/m²K on every sector, the 2000–2009 Korean residential table.
Assemblies name thicknesses (Kalksandstein 0.175/0.2, Stahlbeton, Beton-Wärmeschutz with 100 mm insulation) but state no conductivity or U-value. A whole-building table mean is not a weighted construction from those names.
A-ROOF · Roof U = 0.29 W/m²K (2000–2009 residential table) on the 613.01 m² plan union. Priced as a flat roof (Dach-1…5 at 0°); ten 12° entrance canopies are included in the plan area and do not change the PV roof type.
The five main roof decks are IfcSlab PredefinedType=ROOF at 0°. The 12° canopies are 62.5 m² of the 613.01 m². Calling the whole roof a gable would understate the PV utilisation factor.
A-GROUND-BASEMENT · ISO 13370 slab-on-ground on the measured 516.52 m² union / 287.7 m perimeter with 0.20 m reinforced concrete (generic RC conductivity assumed); generic soil; no perimeter insulation. Cellar walls priced as outdoor air.
The engine lacks a basement-specific model. Pricing cellar walls against outdoor air tends to overstate heating loss. Ten separate ground polygons are the ten terrace footprints, not one building pad.
A-WINDOWS · 2000–2009 Korean table: U 2.1, SHGC 0.45; VLT 0.6.
80 window apertures are measured at OverallWidth × OverallHeight. Thermal and optical properties are not stated.
A-WWR-ENGINE-MEAN · One whole-building glazing/gross-wall ratio on four orientations; measured sector splits retained in the legend. Engine slots N/E/S/W hold the NE/SE/SW/NW sectors.
True north is −147.5°. Every wall falls in a diagonal sector. This reproduces 95.93 m² of glazing exactly in the shared engine.
A-DOORS · 263.53 m² exterior door is priced at the wall U-value.
66 IfcDoor confirm against an exterior wall at OverallWidth × OverallHeight — unit and balcony doors, not a handful of street doors. The engine has no separate door heat-loss element. Door area is excluded from the wall-insulation measure.
A-HVAC · Apartment-table central gas heating and split cooling; natural ventilation at assumed 0.5 ACH; DHW gas boiler 0.85.
The file states no typed MEP. Korean table fuel and COP are comparison assumptions, not installed equipment ratings. No inferred network is added.
A-LPD · Apartment code-table lighting: 6 W/m² LED, manual control.
No lighting power or control property is stated.
A-OCCUPANCY · Apartment table: 0.04 persons/m², 3 W/m² gains, 40 L/person/day DHW, residential weekday/weekend occupancy.
Room names classify spaces; they do not supply an occupancy schedule.
A-AIRTIGHT · The 2000–2009 table ACH50; the engine divides by 20 to natural ACH.
No blower-door measurement or infiltration property exists.
A-NORTH-FOOTPRINT · True north −147.5° from the model; square fallback recipe footprint of area 516.52 m²; no baseline PV, solar thermal or geothermal.
The rendered IFC supplies the actual terrace plan; the square is never treated as a measured outline. Absence of PV in the architectural file does not establish that none exists on a real site.