hard · maisonette · 2 storeys
B0034: a rowhouse on a 25 × 30.3 m lot
4 dwellings, 36 rooms. The pooled front across all methods holds 324 nondominated designs.
Requirements
- Lot
- 25 × 30.3 m (758 m²)
- Street side faces
- 285° (0 = north)
- Setbacks front / rear / left / right
- 6.3 / 7.4 / 1.3 / 1.6 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- no, street-entered dwellings
- Open space, net of parking
- ≥ 31% of the lot
- Parking spaces
- 0
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.344
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% | 0.152 | 1109 | 5.7 | |
| Random search | 0% | 0.000 | 1500 | 7.5 | |
| Simulated annealing | 67% | 0.073 | 1500 | 7.0 | |
| NSGA-II | 100% | 0.177 | 1500 | 8.8 | |
| CP-SAT | 0% | 0.000 | 0 | 4.6 | solver timeout |
| Random sketch + repair | 33% | 0.057 | 1500 | 8.9 | repair collapse |
| Heuristic-seeded NSGA-II | 0% | 0.000 | 1500 | 8.7 | 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 |
|---|---|---|---|---|---|---|---|---|
| Heuristic | 50% | 93% | 35% | – | 0% | 7% | 37% | 2% |
| Random search | 42% | 99% | 99% | 0% | 3% | 91% | 99% | 41% |
| Simulated annealing | 28% | 70% | 72% | 0% | 2% | 84% | 62% | 28% |
| NSGA-II | 20% | 67% | 63% | 0% | 2% | 35% | 44% | 16% |
| Random sketch + repair | 44% | 69% | 63% | 4% | 11% | 77% | 57% | 46% |
| Heuristic-seeded NSGA-II | 42% | 100% | 40% | 0% | 2% | 23% | 43% | 11% |