hard · flats · 2 storeys
B0067: a courtyard on a 21.8 × 22.2 m lot
5 dwellings, 25 rooms. The pooled front across all methods holds 1 nondominated designs.
Requirements
- Lot
- 21.8 × 22.2 m (484 m²)
- Street side faces
- 210° (0 = north)
- Setbacks front / rear / left / right
- 3.6 / 5.3 / 2 / 2.1 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 27% of the lot
- Parking spaces
- 0
- Courtyard
- 53 m² requested
- Tightness (programme / buildable volume)
- 0.678
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | studio | 0 | 33 | entry, living, kitchen, bathroom |
| U1 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U2 | 1BR | 0 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U3 | 1BR | 1 | 46 | entry, living, kitchen, bathroom, bedroom primary |
| U4 | 2BR | 1 | 63 | entry, living, kitchen, bathroom, bedroom primary, bedroom secondary |
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 | 571 | 2.6 | |
| Random search | 0% | 0.000 | 1500 | 6.5 | |
| Simulated annealing | 0% | 0.000 | 1500 | 6.5 | |
| NSGA-II | 0% | 0.000 | 1500 | 7.3 | |
| CP-SAT | 0% | 0.000 | 0 | 4.6 | solver timeout |
| Random sketch + repair | 0% | 0.000 | 1500 | 7.4 | repair collapse |
| Heuristic-seeded NSGA-II | 33% | 0.017 | 1500 | 7.7 | 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 | C14 |
|---|---|---|---|---|---|---|---|---|---|
| Heuristic | 27% | 87% | 77% | 98% | – | 1% | 1% | 2% | 8% |
| Random search | 100% | 100% | 100% | 100% | 42% | 97% | 96% | 98% | 24% |
| Simulated annealing | 69% | 99% | 98% | 87% | 10% | 82% | 41% | 87% | 33% |
| NSGA-II | 58% | 92% | 93% | 81% | 9% | 76% | 30% | 53% | 42% |
| Random sketch + repair | 64% | 98% | 98% | 76% | 23% | 35% | 72% | 94% | 85% |
| Heuristic-seeded NSGA-II | 42% | 97% | 85% | 95% | 7% | 21% | 17% | 25% | 14% |