medium · flats · 2 storeys
B0029: a triplex on a 14.1 × 21.5 m lot
3 dwellings, 15 rooms. The pooled front across all methods holds 235 nondominated designs.
Requirements
- Lot
- 14.1 × 21.5 m (303 m²)
- Street side faces
- 255° (0 = north)
- Setbacks front / rear / left / right
- 4.4 / 4.2 / 2.2 / 2 m
- Storeys × height
- 2 × 2.8 m
- Shared core
- yes (access gallery + stair)
- Open space, net of parking
- ≥ 33% of the lot
- Parking spaces
- 1
- Courtyard
- not required
- Tightness (programme / buildable volume)
- 0.598
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 | 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 | 459 | 1.0 | |
| Random search | 0% | 0.000 | 1500 | 3.6 | |
| Simulated annealing | 0% | 0.000 | 1500 | 4.1 | |
| NSGA-II | 67% | 0.045 | 1500 | 5.5 | |
| CP-SAT | 100% | 0.065 | 17 | 6.6 | |
| Random sketch + repair | 33% | 0.033 | 1500 | 5.2 | repair collapse |
| Heuristic-seeded NSGA-II | 67% | 0.012 | 1500 | 4.6 | 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 | 12% | 76% | 100% | 3% | – | 2% | – | 2% |
| Random search | 75% | 100% | 100% | 81% | 16% | 82% | 91% | 85% |
| Simulated annealing | 46% | 89% | 81% | 39% | 9% | 50% | 40% | 61% |
| NSGA-II | 47% | 85% | 70% | 35% | 8% | 45% | 38% | 48% |
| Random sketch + repair | 43% | 72% | 82% | 11% | 9% | 35% | 41% | 56% |
| Heuristic-seeded NSGA-II | 55% | 96% | 89% | 66% | 3% | 26% | 19% | 28% |