B0057 · density-optimal · seed 0
B0057-cpsat-0-0
CP-SATE · meets all 17 benchmark constraints. Brief B0057
Plan drawing of a fourplex on a 13.7 by 31.0 metre lot, 2 storeys, 4 dwellings, 22 rooms. Dwelling U0 (studio) has 4 rooms totalling 33 square metres. Dwelling U1 (1BR) has 5 rooms totalling 156 square metres. Dwelling U2 (1BR) has 5 rooms totalling 46 square metres. Dwelling U3 (2BR) has 6 rooms totalling 124 square metres. Building footprint 194 square metres; open space 225 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.86, daylight 0.44, privacy 0.74, circulation 0.50, carbon 0.78, cost 0.47.
Objective vector
Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.
- density
- 0.857
- daylight
- 0.441
- privacy
- 0.741
- circulation
- 0.498
- carbon
- 0.779
- cost
- 0.469
Reported quantities
- FAR proxy (GFA / lot)
- 0.87
- site utilisation
- 0.907
- gross floor area, m²
- 368.3
- footprint, m²
- 193.5
- carbon proxy, kgCO₂e/m² (A1–A3)
- 340
- cost index / m² (unitless)
- 2.57
- worst habitable room, daylight
- 0.174
- circulation share of GFA
- 30%
- open space, net of parking
- 54%
- courtyard void, m²
- 0.0
- plumbing stacks
- 5
- 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 | 33.0 | 4 |
| U1 | 1BR | 156.0 | 5 |
| U2 | 1BR | 46.5 | 5 |
| U3 | 2BR | 123.8 | 6 |
All 22 rooms
| Room | Type | Dwelling | Storey | m² | w × h m |
|---|---|---|---|---|---|
| U0@0#0 | entry | U0 | 0 | 7.5 | 1.50 × 5.00 |
| U0@0#1 | living | U0 | 0 | 12.0 | 3.00 × 4.00 |
| U0@0#2 | kitchen | U0 | 0 | 7.5 | 3.00 × 2.50 |
| U0@0#3 | bathroom | U0 | 0 | 6.0 | 1.50 × 4.00 |
| U1@0#0 | entry | U1 | 0 | 6.0 | 1.50 × 4.00 |
| U1@0#1 | living | U1 | 0 | 22.5 | 3.00 × 7.50 |
| U1@0#2 | kitchen | U1 | 0 | 6.0 | 3.00 × 2.00 |
| U1@0#3 | bathroom | U1 | 0 | 108.0 | 9.00 × 12.00 |
| U1@0#4 | bedroom primary | U1 | 0 | 13.5 | 4.50 × 3.00 |
| U2@1#0 | entry | U2 | 1 | 9.0 | 1.50 × 6.00 |
| U2@1#1 | living | U2 | 1 | 12.0 | 3.00 × 4.00 |
| U2@1#2 | kitchen | U2 | 1 | 6.0 | 3.00 × 2.00 |
| U2@1#3 | bathroom | U2 | 1 | 6.0 | 1.50 × 4.00 |
| U2@1#4 | bedroom primary | U2 | 1 | 13.5 | 3.00 × 4.50 |
| U3@1#0 | entry | U3 | 1 | 78.8 | 4.50 × 17.50 |
| U3@1#1 | living | U3 | 1 | 15.8 | 4.50 × 3.50 |
| U3@1#2 | kitchen | U3 | 1 | 6.0 | 2.00 × 3.00 |
| U3@1#3 | bathroom | U3 | 1 | 3.8 | 2.50 × 1.50 |
| U3@1#4 | bedroom primary | U3 | 1 | 12.0 | 3.00 × 4.00 |
| U3@1#5 | bedroom secondary | U3 | 1 | 7.5 | 3.00 × 2.50 |
| CORE@0 | shared circulation | shared | 0 | 4.5 | 3.00 × 1.50 |
| CORE@1 | shared circulation | shared | 1 | 4.5 | 3.00 × 1.50 |