hard · flats · 2 storeys
B0012: a adu pair on a 16.6 × 21.5 m lot
2 dwellings, 11 rooms. The pooled front across all methods holds 490 nondominated designs.
Requirements
- Lot
- 16.6 × 21.5 m (357 m²)
- Street side faces
- 255° (0 = north)
- Setbacks front / rear / left / right
- 6 / 5.8 / 1.4 / 2.2 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 33% of the lot
- Parking spaces
- 2
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.469
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 2BR | 0 | 63 | entry, living, kitchen, bathroom, bedroom primary, bedroom secondary |
| U1 | 1BR | 1 | 46 | entry, living, kitchen, bathroom, bedroom primary |
Required contacts: entry–living, kitchen–living. Doors forbidden between: entry–bedroom_primary, entry–bedroom_secondary, kitchen–bathroom.
Results by method
| Method | Solved | HV | Evals | s | Notes |
|---|---|---|---|---|---|
| Heuristic | 100% | 0.247 | 246 | 0.6 | |
| Random search | 100% | 0.105 | 1500 | 2.3 | |
| Simulated annealing | 100% | 0.237 | 1500 | 2.8 | |
| NSGA-II | 100% | 0.265 | 1500 | 3.9 | |
| CP-SAT | 100% | 0.270 | 47 | 6.7 | |
| Random sketch + repair | 100% | 0.250 | 1500 | 3.7 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.047 | 1500 | 3.0 |
Mean over 1 seeds (the heuristic is deterministic: one run).
Representative designs from the pooled front
Each is best on one objective, or the knee: the most balanced trade-off. None is best overall.
Pareto explorer
Loading designs…
Convergence on this brief
Archive hypervolume against evaluations, mean over seeds.
What stopped designs here
| method | C04 | C05 | C06 | C07 | C08 | C09 | C10 | C11 |
|---|---|---|---|---|---|---|---|---|
| Heuristic | 2% | 24% | 29% | – | – | 0% | 4% | 0% |
| Random search | 28% | 88% | 70% | 26% | 16% | 71% | 37% | 83% |
| Simulated annealing | 22% | 56% | 46% | 10% | 7% | 32% | 19% | 38% |
| NSGA-II | 18% | 44% | 35% | 7% | 4% | 26% | 14% | 29% |
| Random sketch + repair | 26% | 45% | 37% | 5% | 9% | 26% | 21% | 37% |
| Heuristic-seeded NSGA-II | 26% | 59% | 52% | 14% | 4% | 21% | 14% | 20% |