B0015 · density-optimal · seed 1
B0015-heuristic_nsga2-1-1008
Heuristic-seeded NSGA-IIA+D · meets all 17 benchmark constraints. Brief B0015
Plan drawing of a fourplex on a 14.3 by 19.9 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 63 square metres. Dwelling U1 (1BR) has 5 rooms totalling 64 square metres. Dwelling U2 (2BR) has 6 rooms totalling 63 square metres. Dwelling U3 (2BR) has 6 rooms totalling 63 square metres. Building footprint 140 square metres; open space 146 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.38, privacy 0.78, circulation 0.67, carbon 0.77, cost 0.45.
Objective vector
Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.
- density
- 1.000
- daylight
- 0.383
- privacy
- 0.776
- circulation
- 0.667
- carbon
- 0.774
- cost
- 0.447
Reported quantities
- FAR proxy (GFA / lot)
- 0.98
- site utilisation
- 1.000
- gross floor area, m²
- 280.2
- footprint, m²
- 140.1
- carbon proxy, kgCO₂e/m² (A1–A3)
- 341
- cost index / m² (unitless)
- 2.61
- worst habitable room, daylight
- 0.117
- circulation share of GFA
- 15%
- open space, net of parking
- 40%
- courtyard void, m²
- 0.0
- plumbing stacks
- 3
- footprint corners
- 4
- 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 | 62.7 | 5 |
| U1 | 1BR | 63.8 | 5 |
| U2 | 2BR | 63.3 | 6 |
| U3 | 2BR | 63.3 | 6 |
All 24 rooms
| Room | Type | Dwelling | Storey | m² | w × h m |
|---|---|---|---|---|---|
| CORE@0 | shared circulation | shared | 0 | 13.6 | 11.30 × 1.20 |
| CORE@1 | shared circulation | shared | 1 | 13.6 | 11.30 × 1.20 |
| U0@0#2 | kitchen | U0 | 0 | 5.7 | 2.55 × 2.25 |
| U0@0#3 | bathroom | U0 | 0 | 3.9 | 1.75 × 2.25 |
| U0@0#0 | entry | U0 | 0 | 2.9 | 1.30 × 2.25 |
| U0@0#1 | living | U0 | 0 | 17.4 | 5.60 × 3.10 |
| U0@0#4 | bedroom primary | U0 | 0 | 32.8 | 5.60 × 5.85 |
| U1@0#0 | entry | U1 | 0 | 3.4 | 1.50 × 2.25 |
| U1@0#3 | bathroom | U1 | 0 | 3.4 | 1.50 × 2.25 |
| U1@0#2 | kitchen | U1 | 0 | 6.1 | 2.70 × 2.25 |
| U1@0#1 | living | U1 | 0 | 17.7 | 5.70 × 3.10 |
| U1@0#4 | bedroom primary | U1 | 0 | 33.3 | 5.70 × 5.85 |
| U3@1#2 | kitchen | U3 | 1 | 7.5 | 2.50 × 3.00 |
| U3@1#3 | bathroom | U3 | 1 | 5.8 | 1.95 × 3.00 |
| U3@1#0 | entry | U3 | 1 | 3.6 | 1.20 × 3.00 |
| U3@1#1 | living | U3 | 1 | 15.8 | 5.65 × 2.80 |
| U3@1#4 | bedroom primary | U3 | 1 | 15.7 | 2.90 × 5.40 |
| U3@1#5 | bedroom secondary | U3 | 1 | 14.8 | 2.75 × 5.40 |
| U2@1#0 | entry | U2 | 1 | 4.7 | 1.55 × 3.00 |
| U2@1#3 | bathroom | U2 | 1 | 6.0 | 2.00 × 3.00 |
| U2@1#2 | kitchen | U2 | 1 | 6.3 | 2.10 × 3.00 |
| U2@1#1 | living | U2 | 1 | 15.8 | 5.65 × 2.80 |
| U2@1#4 | bedroom primary | U2 | 1 | 17.6 | 3.25 × 5.40 |
| U2@1#5 | bedroom secondary | U2 | 1 | 13.0 | 2.40 × 5.40 |