standard tier · 72 briefs · 1,368 runs · results db2e24e

CityFormGen

Generative and optimisation methods for middle housing, compared under matched compute

RESEARCH GENERATIVE-DESIGN BENCHMARK - NOT CONSTRUCTION DOCUMENTATION OR CODE CERTIFICATION.

B0005 · circulation-optimal · seed 1

B0005-cpsat-1-6

CP-SATE · meets all 17 benchmark constraints. Brief B0005

Plan drawing of a triplex on a 15.8 by 20.8 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 48 square metres. Dwelling U1 (1BR) has 5 rooms totalling 89 square metres. Dwelling U2 (2BR) has 6 rooms totalling 113 square metres. Building footprint 144 square metres; open space 192 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.83, daylight 0.52, privacy 0.82, circulation 0.72, carbon 0.72, cost 0.28.
B0005 · cpsat · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 15.8 by 20.8 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 48 square metres. Dwelling U1 (1BR) has 5 rooms totalling 89 square metres. Dwelling U2 (2BR) has 6 rooms totalling 113 square metres. Building footprint 144 square metres; open space 192 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.83, daylight 0.52, privacy 0.82, circulation 0.72, carbon 0.72, cost 0.28.

Objective vector

Proxy scores in [0, 1], higher is better. Kept as a vector; there is no overall score.

density
0.826
daylight
0.521
privacy
0.819
circulation
0.716
carbon
0.725
cost
0.282

Reported quantities

FAR proxy (GFA / lot)
0.80
site utilisation
0.887
gross floor area, m²
264.0
footprint, m²
144.0
carbon proxy, kgCO₂e/m² (A1–A3)
359
cost index / m² (unitless)
2.86
worst habitable room, daylight
0.248
circulation share of GFA
12%
open space, net of parking
56%
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

DwellingTypeArea m²Rooms
U01BR48.05
U11BR89.35
U22BR113.36
All 18 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU007.52.50 × 3.00
U0@0#1livingU0015.05.00 × 3.00
U0@0#2kitchenU007.52.50 × 3.00
U0@0#3bathroomU006.02.00 × 3.00
U0@0#4bedroom primaryU0012.04.00 × 3.00
U1@0#0entryU106.04.00 × 1.50
U1@0#1livingU1018.03.00 × 6.00
U1@0#2kitchenU1011.32.50 × 4.50
U1@0#3bathroomU1036.06.00 × 6.00
U1@0#4bedroom primaryU1018.06.00 × 3.00
U2@1#0entryU213.81.50 × 2.50
U2@1#1livingU2121.03.00 × 7.00
U2@1#2kitchenU2112.02.00 × 6.00
U2@1#3bathroomU2148.04.00 × 12.00
U2@1#4bedroom primaryU2121.03.00 × 7.00
U2@1#5bedroom secondaryU217.53.00 × 2.50
CORE@0shared circulationshared06.81.50 × 4.50
CORE@1shared circulationshared16.81.50 × 4.50

Side by side