B0028 · cost-optimal · seed 2
B0028-heuristic_nsga2-2-1194
Heuristic-seeded NSGA-IIA+D · meets all 17 benchmark constraints. Brief B0028
Plan drawing of a rowhouse on a 22.2 by 26.7 metre lot, 2 storeys, 3 dwellings, 27 rooms. Dwelling U0 (2BR) has 9 rooms totalling 170 square metres. Dwelling U1 (2BR) has 9 rooms totalling 206 square metres. Dwelling U2 (2BR) has 9 rooms totalling 137 square metres. Building footprint 257 square metres; open space 324 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.87, daylight 0.48, privacy 0.87, circulation 0.47, carbon 0.88, cost 0.79.
Objective vector
Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.
- density
- 0.874
- daylight
- 0.477
- privacy
- 0.868
- circulation
- 0.470
- carbon
- 0.883
- cost
- 0.793
Reported quantities
- FAR proxy (GFA / lot)
- 0.87
- site utilisation
- 0.918
- gross floor area, m²
- 513.8
- footprint, m²
- 256.9
- carbon proxy, kgCO₂e/m² (A1–A3)
- 302
- cost index / m² (unitless)
- 2.07
- worst habitable room, daylight
- 0.186
- circulation share of GFA
- 46%
- open space, net of parking
- 57%
- courtyard void, m²
- 0.0
- plumbing stacks
- 3
- footprint corners
- 4
- preferred adjacencies met
- 50%
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 | 2BR | 170.4 | 9 |
| U1 | 2BR | 206.4 | 9 |
| U2 | 2BR | 137.1 | 9 |
All 27 rooms
| Room | Type | Dwelling | Storey | m² | w × h m |
|---|---|---|---|---|---|
| STAIR:U0@0 | circulation | U0 | 0 | 38.1 | 6.15 × 6.20 |
| STAIR:U0@1 | circulation | U0 | 1 | 38.1 | 6.15 × 6.20 |
| U0@0#2 | kitchen | U0 | 0 | 13.7 | 2.95 × 4.65 |
| U0@0#3 | bathroom | U0 | 0 | 7.2 | 1.55 × 4.65 |
| U0@0#0 | entry | U0 | 0 | 7.7 | 1.65 × 4.65 |
| U0@0#1 | living | U0 | 0 | 18.4 | 6.15 × 3.00 |
| U0@1#7 | bathroom | U0 | 1 | 13.2 | 6.15 × 2.15 |
| U0@1#5 | bedroom primary | U0 | 1 | 17.5 | 6.15 × 2.85 |
| U0@1#6 | bedroom secondary | U0 | 1 | 16.3 | 6.15 × 2.65 |
| STAIR:U1@0 | circulation | U1 | 0 | 45.8 | 7.45 × 6.15 |
| STAIR:U1@1 | circulation | U1 | 1 | 45.8 | 7.45 × 6.15 |
| U1@0#0 | entry | U1 | 0 | 6.6 | 1.30 × 5.10 |
| U1@0#1 | living | U1 | 0 | 15.0 | 2.95 × 5.10 |
| U1@0#2 | kitchen | U1 | 0 | 16.3 | 3.20 × 5.10 |
| U1@0#3 | bathroom | U1 | 0 | 19.4 | 7.45 × 2.60 |
| U1@1#5 | bedroom primary | U1 | 1 | 19.6 | 4.25 × 4.60 |
| U1@1#6 | bedroom secondary | U1 | 1 | 14.7 | 3.20 × 4.60 |
| U1@1#7 | bathroom | U1 | 1 | 23.1 | 7.45 × 3.10 |
| STAIR:U2@0 | circulation | U2 | 0 | 24.3 | 4.95 × 4.90 |
| STAIR:U2@1 | circulation | U2 | 1 | 24.3 | 4.95 × 4.90 |
| U2@0#0 | entry | U2 | 0 | 4.6 | 1.20 × 3.80 |
| U2@0#2 | kitchen | U2 | 0 | 8.2 | 2.15 × 3.80 |
| U2@0#3 | bathroom | U2 | 0 | 6.1 | 1.60 × 3.80 |
| U2@0#1 | living | U2 | 0 | 25.5 | 4.95 × 5.15 |
| U2@1#7 | bathroom | U2 | 1 | 9.9 | 4.95 × 2.00 |
| U2@1#5 | bedroom primary | U2 | 1 | 17.8 | 4.95 × 3.60 |
| U2@1#6 | bedroom secondary | U2 | 1 | 16.6 | 4.95 × 3.35 |