hard · flats · 2 storeys
B0066: a adu pair on a 12.2 × 21.7 m lot
2 dwellings, 11 rooms. The pooled front across all methods holds 208 nondominated designs.
Requirements
- Lot
- 12.2 × 21.7 m (265 m²)
- Street side faces
- 30° (0 = north)
- Setbacks front / rear / left / right
- 6.5 / 6.1 / 1.6 / 1.6 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 39% of the lot
- Parking spaces
- 1
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.722
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 | 0% | 0.000 | 273 | 0.6 | |
| Random search | 0% | 0.000 | 1500 | 2.9 | |
| Simulated annealing | 100% | 0.067 | 1500 | 3.2 | |
| NSGA-II | 100% | 0.080 | 1500 | 4.7 | |
| CP-SAT | 100% | 0.147 | 52 | 7.2 | |
| Random sketch + repair | 100% | 0.102 | 1500 | 3.7 | repair collapse |
| Heuristic-seeded NSGA-II | 67% | 0.061 | 1500 | 3.5 | repair collapse |
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.
Closest attempts that failed
For methods that found nothing feasible: their least-infeasible design, with its violations marked on its page.
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 | 20% | 74% | 100% | 9% | – | 0% | 2% | 0% |
| Random search | 88% | 100% | 75% | 99% | 25% | 70% | 32% | 87% |
| Simulated annealing | 43% | 79% | 47% | 42% | 11% | 34% | 17% | 48% |
| NSGA-II | 31% | 64% | 35% | 50% | 9% | 27% | 19% | 32% |
| Random sketch + repair | 61% | 82% | 74% | 33% | 11% | 19% | 26% | 38% |
| Heuristic-seeded NSGA-II | 31% | 67% | 82% | 20% | 3% | 21% | 11% | 19% |