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.

B0032 · daylight-optimal · seed 1

B0032-nsga2-1-1096

NSGA-IID · meets all 17 benchmark constraints. Brief B0032

Plan drawing of a duplex on a 13.9 by 23.0 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 69 square metres. Dwelling U1 (2BR) has 6 rooms totalling 69 square metres. Building footprint 80 square metres; open space 242 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.80, daylight 0.86, privacy 0.89, circulation 0.55, carbon 0.72, cost 0.22.
B0032 · nsga2 · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 13.9 by 23.0 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 69 square metres. Dwelling U1 (2BR) has 6 rooms totalling 69 square metres. Building footprint 80 square metres; open space 242 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.80, daylight 0.86, privacy 0.89, circulation 0.55, carbon 0.72, cost 0.22.

Objective vector

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

density
0.802
daylight
0.859
privacy
0.888
circulation
0.552
carbon
0.717
cost
0.220

Reported quantities

FAR proxy (GFA / lot)
0.50
site utilisation
0.871
gross floor area, m²
159.2
footprint, m²
79.6
carbon proxy, kgCO₂e/m² (A1–A3)
362
cost index / m² (unitless)
2.96
worst habitable room, daylight
0.810
circulation share of GFA
20%
open space, net of parking
75%
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
U02BR69.26
U12BR69.26
All 14 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.41.30 × 8.00
CORE@1shared circulationshared110.41.30 × 8.00
U0@0#5bedroom secondaryU0011.43.05 × 3.75
U0@0#3bathroomU006.41.70 × 3.75
U0@0#1livingU0020.24.75 × 4.25
U0@0#4bedroom primaryU0015.43.90 × 3.95
U0@0#0entryU006.63.90 × 1.70
U0@0#2kitchenU009.23.90 × 2.35
U1@1#1livingU1126.05.30 × 4.90
U1@1#2kitchenU1110.83.50 × 3.10
U1@1#3bathroomU115.61.80 × 3.10
U1@1#5bedroom secondaryU118.93.35 × 2.65
U1@1#0entryU114.73.35 × 1.40
U1@1#4bedroom primaryU1113.23.35 × 3.95

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