hard · flats · 2 storeys
B0048: a adu pair on a 14.2 × 18.4 m lot
2 dwellings, 12 rooms. The pooled front across all methods holds 31 nondominated designs.
Requirements
- Lot
- 14.2 × 18.4 m (261 m²)
- Street side faces
- 60° (0 = north)
- Setbacks front / rear / left / right
- 6 / 4.1 / 1.8 / 1.3 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 41% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.685
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 3BR | 0 | 84 | entry, living, dining, kitchen, bathroom, bedroom primary, bedroom secondary, bedroom secondary |
| U1 | studio | 1 | 33 | entry, living, kitchen, bathroom |
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 | 243 | 0.5 | |
| Random search | 0% | 0.000 | 1500 | 3.4 | |
| Simulated annealing | 0% | 0.000 | 1500 | 3.4 | |
| NSGA-II | 0% | 0.000 | 1500 | 4.0 | |
| CP-SAT | 100% | 0.121 | 43 | 6.7 | |
| Random sketch + repair | 0% | 0.000 | 1500 | 3.8 | repair collapse |
| Heuristic-seeded NSGA-II | 0% | 0.000 | 1500 | 3.8 | 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 | 32% | 47% | 3% | 92% | – | – | 18% | 100% |
| Random search | 100% | 100% | 76% | 100% | 16% | 70% | 78% | 85% |
| Simulated annealing | 70% | 88% | 49% | 100% | 8% | 35% | 45% | 66% |
| NSGA-II | 64% | 86% | 36% | 100% | 7% | 34% | 47% | 65% |
| Random sketch + repair | 72% | 81% | 64% | 85% | 7% | 38% | 60% | 56% |
| Heuristic-seeded NSGA-II | 31% | 99% | 44% | 100% | 3% | 23% | 27% | 35% |