B0023 · cost-optimal · seed 2
B0023-sketch-2-590
Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0023
Plan drawing of a triplex on a 13.5 by 27.4 metre lot, 2 storeys, 3 dwellings, 17 rooms. Dwelling U0 (studio) has 4 rooms totalling 58 square metres. Dwelling U1 (1BR) has 5 rooms totalling 52 square metres. Dwelling U2 (2BR) has 6 rooms totalling 110 square metres. Building footprint 160 square metres; open space 205 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.99, daylight 0.52, privacy 0.84, circulation 0.52, carbon 0.81, cost 0.66.
Objective vector
Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.
- density
- 0.987
- daylight
- 0.523
- privacy
- 0.842
- circulation
- 0.522
- carbon
- 0.814
- cost
- 0.664
Reported quantities
- FAR proxy (GFA / lot)
- 0.86
- site utilisation
- 0.992
- gross floor area, m²
- 319.5
- footprint, m²
- 159.7
- carbon proxy, kgCO₂e/m² (A1–A3)
- 327
- cost index / m² (unitless)
- 2.27
- worst habitable room, daylight
- 0.379
- circulation share of GFA
- 42%
- open space, net of parking
- 57%
- courtyard void, m²
- 0.0
- plumbing stacks
- 2
- footprint corners
- 4
- preferred adjacencies met
- 100%
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 | studio | 58.3 | 4 |
| U1 | 1BR | 51.9 | 5 |
| U2 | 2BR | 110.1 | 6 |
All 17 rooms
| Room | Type | Dwelling | Storey | m² | w × h m |
|---|---|---|---|---|---|
| CORE@0 | shared circulation | shared | 0 | 49.6 | 2.75 × 18.05 |
| CORE@1 | shared circulation | shared | 1 | 49.6 | 2.75 × 18.05 |
| U1@0#0 | entry | U1 | 0 | 14.5 | 3.15 × 4.60 |
| U1@0#1 | living | U1 | 0 | 12.3 | 3.15 × 3.90 |
| U1@0#4 | bedroom primary | U1 | 0 | 11.7 | 2.95 × 3.95 |
| U1@0#3 | bathroom | U1 | 0 | 4.7 | 2.95 × 1.60 |
| U1@0#2 | kitchen | U1 | 0 | 8.7 | 2.95 × 2.95 |
| U0@0#1 | living | U0 | 0 | 24.7 | 4.70 × 5.25 |
| U0@0#0 | entry | U0 | 0 | 7.3 | 1.40 × 5.25 |
| U0@0#3 | bathroom | U0 | 0 | 16.1 | 3.75 × 4.30 |
| U0@0#2 | kitchen | U0 | 0 | 10.1 | 2.35 × 4.30 |
| U2@1#5 | bedroom secondary | U2 | 1 | 8.1 | 3.05 × 2.65 |
| U2@1#2 | kitchen | U2 | 1 | 8.1 | 3.05 × 2.65 |
| U2@1#0 | entry | U2 | 1 | 12.1 | 1.90 × 6.35 |
| U2@1#1 | living | U2 | 1 | 14.3 | 4.20 × 3.40 |
| U2@1#4 | bedroom primary | U2 | 1 | 12.4 | 4.20 × 2.95 |
| U2@1#3 | bathroom | U2 | 1 | 55.2 | 6.10 × 9.05 |