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.

B0011 · density-optimal · seed 1

B0011-nsga2-1-1348

NSGA-IID · meets all 17 benchmark constraints. Brief B0011

Plan drawing of a triplex on a 16.0 by 22.4 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 57 square metres. Dwelling U1 (1BR) has 5 rooms totalling 58 square metres. Dwelling U2 (2BR) has 6 rooms totalling 115 square metres. Building footprint 131 square metres; open space 230 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.95, daylight 0.76, privacy 0.83, circulation 0.54, carbon 0.79, cost 0.44.
B0011 · nsga2 · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 16.0 by 22.4 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 57 square metres. Dwelling U1 (1BR) has 5 rooms totalling 58 square metres. Dwelling U2 (2BR) has 6 rooms totalling 115 square metres. Building footprint 131 square metres; open space 230 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.95, daylight 0.76, privacy 0.83, circulation 0.54, carbon 0.79, cost 0.44.

Objective vector

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

density
0.952
daylight
0.764
privacy
0.827
circulation
0.537
carbon
0.794
cost
0.439

Reported quantities

FAR proxy (GFA / lot)
0.73
site utilisation
0.969
gross floor area, m²
262.3
footprint, m²
131.2
carbon proxy, kgCO₂e/m² (A1–A3)
334
cost index / m² (unitless)
2.62
worst habitable room, daylight
0.500
circulation share of GFA
21%
open space, net of parking
59%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
33%

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
U01BR56.85
U11BR58.35
U22BR115.16
All 18 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared016.11.60 × 10.05
CORE@1shared circulationshared116.11.60 × 10.05
U1@0#1livingU1023.33.00 × 7.75
U1@0#0entryU106.93.00 × 2.30
U1@0#2kitchenU107.62.80 × 2.70
U1@0#3bathroomU104.62.80 × 1.65
U1@0#4bedroom primaryU1016.02.80 × 5.70
U0@0#1livingU0024.13.80 × 6.35
U0@0#4bedroom primaryU0014.13.80 × 3.70
U0@0#0entryU003.61.85 × 1.95
U0@0#3bathroomU005.41.85 × 2.90
U0@0#2kitchenU009.61.85 × 5.20
U2@1#2kitchenU2117.84.45 × 4.00
U2@1#3bathroomU216.41.60 × 4.00
U2@1#1livingU2136.66.05 × 6.05
U2@1#5bedroom secondaryU2119.25.40 × 3.55
U2@1#0entryU2111.95.40 × 2.20
U2@1#4bedroom primaryU2123.25.40 × 4.30

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