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.

B0044 · knee point · seed 2

B0044-sketch-2-909

Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0044

Plan drawing of a duplex on a 13.8 by 20.7 metre lot, 2 storeys, 2 dwellings, 12 rooms. Dwelling U0 (1BR) has 5 rooms totalling 67 square metres. Dwelling U1 (1BR) has 5 rooms totalling 67 square metres. Building footprint 77 square metres; open space 212 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.96, daylight 0.89, privacy 0.86, circulation 0.60, carbon 0.72, cost 0.43.
B0044 · sketch · seed 2scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 13.8 by 20.7 metre lot, 2 storeys, 2 dwellings, 12 rooms. Dwelling U0 (1BR) has 5 rooms totalling 67 square metres. Dwelling U1 (1BR) has 5 rooms totalling 67 square metres. Building footprint 77 square metres; open space 212 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.96, daylight 0.89, privacy 0.86, circulation 0.60, carbon 0.72, cost 0.43.

Objective vector

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

density
0.960
daylight
0.886
privacy
0.859
circulation
0.601
carbon
0.722
cost
0.426

Reported quantities

FAR proxy (GFA / lot)
0.54
site utilisation
0.974
gross floor area, m²
154.5
footprint, m²
77.3
carbon proxy, kgCO₂e/m² (A1–A3)
360
cost index / m² (unitless)
2.64
worst habitable room, daylight
0.645
circulation share of GFA
19%
open space, net of parking
73%
courtyard void, m²
0.0
plumbing stacks
1
footprint corners
4
preferred adjacencies met
50%

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
U01BR67.35
U11BR67.35
All 12 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared09.91.30 × 7.65
CORE@1shared circulationshared19.91.30 × 7.65
U0@0#0entryU006.03.40 × 1.75
U0@0#1livingU0020.13.40 × 5.90
U0@0#2kitchenU0014.43.65 × 3.95
U0@0#3bathroomU006.91.75 × 3.95
U0@0#4bedroom primaryU0020.05.40 × 3.70
U1@1#0entryU113.81.95 × 1.95
U1@1#3bathroomU114.72.40 × 1.95
U1@1#1livingU1124.84.35 × 5.70
U1@1#2kitchenU1113.14.45 × 2.95
U1@1#4bedroom primaryU1120.94.45 × 4.70

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