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.

B0014 · circulation-optimal · seed 1

B0014-cpsat-1-39

CP-SATE · meets all 17 benchmark constraints. Brief B0014

Plan drawing of a duplex on a 15.1 by 21.0 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 103 square metres. Dwelling U1 (2BR) has 6 rooms totalling 96 square metres. Building footprint 108 square metres; open space 207 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.85, daylight 0.77, privacy 0.86, circulation 0.79, carbon 0.74, cost 0.39.
B0014 · cpsat · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 15.1 by 21.0 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 103 square metres. Dwelling U1 (2BR) has 6 rooms totalling 96 square metres. Building footprint 108 square metres; open space 207 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.85, daylight 0.77, privacy 0.86, circulation 0.79, carbon 0.74, cost 0.39.

Objective vector

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

density
0.854
daylight
0.772
privacy
0.857
circulation
0.793
carbon
0.740
cost
0.387

Reported quantities

FAR proxy (GFA / lot)
0.66
site utilisation
0.905
gross floor area, m²
208.8
footprint, m²
108.0
carbon proxy, kgCO₂e/m² (A1–A3)
354
cost index / m² (unitless)
2.70
worst habitable room, daylight
0.626
circulation share of GFA
8%
open space, net of parking
66%
courtyard void, m²
0.0
plumbing stacks
3
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
U02BR102.86
U12BR95.56
All 14 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU002.31.50 × 1.50
U0@0#1livingU0012.03.00 × 4.00
U0@0#2kitchenU0027.03.00 × 9.00
U0@0#3bathroomU008.02.00 × 4.00
U0@0#4bedroom primaryU0036.04.00 × 9.00
U0@0#5bedroom secondaryU0017.53.50 × 5.00
U1@1#0entryU114.02.00 × 2.00
U1@1#1livingU1112.33.50 × 3.50
U1@1#2kitchenU1127.03.00 × 9.00
U1@1#3bathroomU114.02.00 × 2.00
U1@1#4bedroom primaryU1112.33.50 × 3.50
U1@1#5bedroom secondaryU1136.04.00 × 9.00
CORE@0shared circulationshared05.31.50 × 3.50
CORE@1shared circulationshared15.31.50 × 3.50

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