B0020 · carbon-optimal · seed 1
B0020-cpsat-1-24
CP-SATE · meets all 17 benchmark constraints. Brief B0020
Plan drawing of a duplex on a 18.0 by 21.2 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 126 square metres. Dwelling U1 (2BR) has 6 rooms totalling 126 square metres. Building footprint 130 square metres; open space 248 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.95, daylight 0.55, privacy 0.84, circulation 0.75, carbon 0.84, cost 0.56.
Objective vector
Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.
- density
- 0.954
- daylight
- 0.555
- privacy
- 0.843
- circulation
- 0.753
- carbon
- 0.844
- cost
- 0.559
Reported quantities
- FAR proxy (GFA / lot)
- 0.68
- site utilisation
- 0.970
- gross floor area, m²
- 260.0
- footprint, m²
- 130.0
- carbon proxy, kgCO₂e/m² (A1–A3)
- 316
- cost index / m² (unitless)
- 2.43
- worst habitable room, daylight
- 0.332
- circulation share of GFA
- 8%
- open space, net of parking
- 66%
- courtyard void, m²
- 0.0
- plumbing stacks
- 4
- 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 | 2BR | 125.5 | 6 |
| U1 | 2BR | 125.5 | 6 |
All 14 rooms
| Room | Type | Dwelling | Storey | m² | w × h m |
|---|---|---|---|---|---|
| U0@0#0 | entry | U0 | 0 | 2.3 | 1.50 × 1.50 |
| U0@0#1 | living | U0 | 0 | 71.5 | 13.00 × 5.50 |
| U0@0#2 | kitchen | U0 | 0 | 9.0 | 2.00 × 4.50 |
| U0@0#3 | bathroom | U0 | 0 | 11.3 | 2.50 × 4.50 |
| U0@0#4 | bedroom primary | U0 | 0 | 15.8 | 3.50 × 4.50 |
| U0@0#5 | bedroom secondary | U0 | 0 | 15.8 | 3.50 × 4.50 |
| U1@1#0 | entry | U1 | 1 | 9.0 | 6.00 × 1.50 |
| U1@1#1 | living | U1 | 1 | 12.0 | 4.00 × 3.00 |
| U1@1#2 | kitchen | U1 | 1 | 11.0 | 2.00 × 5.50 |
| U1@1#3 | bathroom | U1 | 1 | 70.0 | 7.00 × 10.00 |
| U1@1#4 | bedroom primary | U1 | 1 | 13.5 | 4.50 × 3.00 |
| U1@1#5 | bedroom secondary | U1 | 1 | 10.0 | 4.00 × 2.50 |
| CORE@0 | shared circulation | shared | 0 | 4.5 | 1.50 × 3.00 |
| CORE@1 | shared circulation | shared | 1 | 4.5 | 1.50 × 3.00 |