B0055 · cost-optimal · seed 2
B0055-heuristic_nsga2-2-1491
Heuristic-seeded NSGA-IIA+D · meets all 17 benchmark constraints. Brief B0055
Plan drawing of a courtyard on a 21.7 by 26.3 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 70 square metres. Dwelling U1 (2BR) has 6 rooms totalling 98 square metres. Dwelling U2 (2BR) has 6 rooms totalling 98 square metres. Dwelling U3 (2BR) has 6 rooms totalling 70 square metres. Building footprint 234 square metres; open space 333 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.79, daylight 0.65, privacy 0.78, circulation 0.51, carbon 0.82, cost 0.72.
Objective vector
Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.
- density
- 0.788
- daylight
- 0.650
- privacy
- 0.776
- circulation
- 0.509
- carbon
- 0.815
- cost
- 0.718
Reported quantities
- FAR proxy (GFA / lot)
- 0.82
- site utilisation
- 0.862
- gross floor area, m²
- 467.1
- footprint, m²
- 233.5
- carbon proxy, kgCO₂e/m² (A1–A3)
- 326
- cost index / m² (unitless)
- 2.19
- worst habitable room, daylight
- 0.260
- circulation share of GFA
- 33%
- open space, net of parking
- 59%
- courtyard void, m²
- 34.5
- plumbing stacks
- 2
- footprint corners
- 8
- preferred adjacencies met
- 0%
Benchmark constraints
Benchmark rules, not building code.
- C01geometry valid passed
- C02no overlap passed
- C03within buildable passed
- C04min room area passed
- C05min room dimension passed
- C06max room aspect passed
- C07min unit area passed
- C08unit connectivity passed
- C09street access passed
- C10habitable daylight passed
- C11required adjacency passed
- C12forbidden door passed
- C13open space passed
- C14courtyard provision passed
- C15programme complete passed
- C16unit contiguity passed
- C17vertical support passed
Dwellings and rooms
| Dwelling | Type | Area m² | Rooms |
|---|---|---|---|
| U0 | 1BR | 70.2 | 5 |
| U1 | 2BR | 97.8 | 6 |
| U2 | 2BR | 97.8 | 6 |
| U3 | 2BR | 70.2 | 6 |
All 25 rooms
| Room | Type | Dwelling | Storey | m² | w × h m |
|---|---|---|---|---|---|
| CORE@0 | shared circulation | shared | 0 | 65.6 | 17.50 × 3.75 |
| CORE@1 | shared circulation | shared | 1 | 65.6 | 17.50 × 3.75 |
| U1@0#2 | kitchen | U1 | 0 | 13.1 | 4.30 × 3.05 |
| U1@0#3 | bathroom | U1 | 0 | 7.2 | 2.35 × 3.05 |
| U1@0#0 | entry | U1 | 0 | 5.6 | 1.85 × 3.05 |
| U1@0#1 | living | U1 | 0 | 32.7 | 8.50 × 3.85 |
| U1@0#5 | bedroom secondary | U1 | 0 | 16.6 | 3.60 × 4.60 |
| U1@0#4 | bedroom primary | U1 | 0 | 22.5 | 4.90 × 4.60 |
| U2@1#2 | kitchen | U2 | 1 | 9.6 | 3.15 × 3.05 |
| U2@1#3 | bathroom | U2 | 1 | 9.2 | 3.00 × 3.05 |
| U2@1#0 | entry | U2 | 1 | 7.2 | 2.35 × 3.05 |
| U2@1#1 | living | U2 | 1 | 32.7 | 8.50 × 3.85 |
| U2@1#4 | bedroom primary | U2 | 1 | 22.3 | 4.85 × 4.60 |
| U2@1#5 | bedroom secondary | U2 | 1 | 16.8 | 3.65 × 4.60 |
| U0@0#2 | kitchen | U0 | 0 | 11.1 | 3.35 × 3.30 |
| U0@0#3 | bathroom | U0 | 0 | 5.0 | 2.75 × 1.80 |
| U0@0#0 | entry | U0 | 0 | 4.1 | 2.75 × 1.50 |
| U0@0#1 | living | U0 | 0 | 29.0 | 6.10 × 4.75 |
| U0@0#4 | bedroom primary | U0 | 0 | 21.0 | 6.10 × 3.45 |
| U3@1#0 | entry | U3 | 1 | 4.0 | 1.30 × 3.05 |
| U3@1#3 | bathroom | U3 | 1 | 5.2 | 1.70 × 3.05 |
| U3@1#2 | kitchen | U3 | 1 | 9.5 | 3.10 × 3.05 |
| U3@1#1 | living | U3 | 1 | 29.3 | 6.10 × 4.80 |
| U3@1#4 | bedroom primary | U3 | 1 | 12.8 | 3.50 × 3.65 |
| U3@1#5 | bedroom secondary | U3 | 1 | 9.5 | 2.60 × 3.65 |