easy · maisonette · 2 storeys
B0058: a rowhouse on a 29.5 × 30.6 m lot
4 dwellings, 36 rooms. The pooled front across all methods holds 587 nondominated designs.
Requirements
- Lot
- 29.5 × 30.6 m (903 m²)
- Street side faces
- 120° (0 = north)
- Setbacks front / rear / left / right
- 5.2 / 6.3 / 2 / 2.1 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- no, street-entered dwellings
- Open space, net of parking
- ≥ 30% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.260
Programme
| Dwelling | Type | Storey | Min m² | Rooms |
|---|---|---|---|---|
| U0 | 2BR | all | 63 | entry, living, kitchen, bathroom, circulation, bedroom primary, bedroom secondary, bathroom, circulation |
| U1 | 2BR | all | 63 | entry, living, kitchen, bathroom, circulation, bedroom primary, bedroom secondary, bathroom, circulation |
| U2 | 2BR | all | 63 | entry, living, kitchen, bathroom, circulation, bedroom primary, bedroom secondary, bathroom, circulation |
| U3 | 2BR | all | 63 | entry, living, kitchen, bathroom, circulation, bedroom primary, bedroom secondary, bathroom, circulation |
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% | 0.263 | 867 | 4.5 | |
| Random search | 0% | 0.000 | 1500 | 6.8 | |
| Simulated annealing | 33% | 0.069 | 1500 | 6.7 | |
| NSGA-II | 100% | 0.192 | 1500 | 9.2 | |
| CP-SAT | 0% | 0.000 | 0 | 4.4 | solver timeout |
| Random sketch + repair | 33% | 0.077 | 1500 | 8.2 | repair collapse |
| Heuristic-seeded NSGA-II | 100% | 0.203 | 1500 | 9.0 |
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.
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 | 7% | 53% | 41% | – | 0% | 6% | 1% | 1% |
| Random search | 14% | 94% | 99% | – | 1% | 90% | 99% | 39% |
| Simulated annealing | 18% | 72% | 81% | – | 1% | 77% | 61% | 22% |
| NSGA-II | 13% | 59% | 72% | 0% | 1% | 51% | 41% | 17% |
| Random sketch + repair | 23% | 45% | 62% | 2% | 5% | 87% | 85% | 24% |
| Heuristic-seeded NSGA-II | 11% | 53% | 57% | 0% | 2% | 20% | 21% | 9% |