B0026 · cost-optimal · seed 1
B0026-sketch-1-956
Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0026
Plan drawing of a duplex on a 13.6 by 18.3 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (1BR) has 5 rooms totalling 68 square metres. Dwelling U1 (2BR) has 6 rooms totalling 68 square metres. Building footprint 85 square metres; open space 160 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.61, privacy 0.89, circulation 0.50, carbon 0.74, cost 0.49.
Objective vector
Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.
- density
- 1.000
- daylight
- 0.610
- privacy
- 0.894
- circulation
- 0.498
- carbon
- 0.741
- cost
- 0.493
Reported quantities
- FAR proxy (GFA / lot)
- 0.69
- site utilisation
- 1.000
- gross floor area, m²
- 171.0
- footprint, m²
- 85.5
- carbon proxy, kgCO₂e/m² (A1–A3)
- 353
- cost index / m² (unitless)
- 2.54
- worst habitable room, daylight
- 0.258
- circulation share of GFA
- 37%
- open space, net of parking
- 66%
- courtyard void, m²
- 0.0
- plumbing stacks
- 1
- 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 | 1BR | 67.6 | 5 |
| U1 | 2BR | 67.6 | 6 |
All 13 rooms
| Room | Type | Dwelling | Storey | m² | w × h m |
|---|---|---|---|---|---|
| CORE@0 | shared circulation | shared | 0 | 17.8 | 2.15 × 8.30 |
| CORE@1 | shared circulation | shared | 1 | 17.8 | 2.15 × 8.30 |
| U0@0#0 | entry | U0 | 0 | 23.3 | 5.35 × 4.35 |
| U0@0#4 | bedroom primary | U0 | 0 | 11.3 | 2.85 × 3.95 |
| U0@0#2 | kitchen | U0 | 0 | 9.9 | 2.50 × 3.95 |
| U0@0#1 | living | U0 | 0 | 15.7 | 2.80 × 5.60 |
| U0@0#3 | bathroom | U0 | 0 | 7.6 | 2.80 × 2.70 |
| U1@1#1 | living | U1 | 1 | 23.3 | 4.80 × 4.85 |
| U1@1#0 | entry | U1 | 1 | 5.0 | 1.45 × 3.45 |
| U1@1#2 | kitchen | U1 | 1 | 11.6 | 3.35 × 3.45 |
| U1@1#5 | bedroom secondary | U1 | 1 | 7.9 | 3.35 × 2.35 |
| U1@1#4 | bedroom primary | U1 | 1 | 13.2 | 3.35 × 3.95 |
| U1@1#3 | bathroom | U1 | 1 | 6.7 | 3.35 × 2.00 |