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.

B0038 · knee point · seed 2

B0038-sketch-2-1179

Random sketch + repairF′ · meets all 17 benchmark constraints. Brief B0038

Plan drawing of a duplex on a 14.4 by 20.5 metre lot, 2 storeys, 2 dwellings, 12 rooms. Dwelling U0 (1BR) has 5 rooms totalling 99 square metres. Dwelling U1 (1BR) has 5 rooms totalling 99 square metres. Building footprint 111 square metres; open space 187 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.99, daylight 0.65, privacy 0.84, circulation 0.66, carbon 0.80, cost 0.65.
B0038 · sketch · seed 2scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 14.4 by 20.5 metre lot, 2 storeys, 2 dwellings, 12 rooms. Dwelling U0 (1BR) has 5 rooms totalling 99 square metres. Dwelling U1 (1BR) has 5 rooms totalling 99 square metres. Building footprint 111 square metres; open space 187 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.99, daylight 0.65, privacy 0.84, circulation 0.66, carbon 0.80, cost 0.65.

Objective vector

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

density
0.985
daylight
0.649
privacy
0.842
circulation
0.659
carbon
0.796
cost
0.652

Reported quantities

FAR proxy (GFA / lot)
0.75
site utilisation
0.990
gross floor area, m²
222.4
footprint, m²
111.2
carbon proxy, kgCO₂e/m² (A1–A3)
334
cost index / m² (unitless)
2.29
worst habitable room, daylight
0.430
circulation share of GFA
16%
open space, net of parking
62%
courtyard void, m²
0.0
plumbing stacks
1
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
U01BR98.95
U11BR98.95
All 12 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared012.21.20 × 10.20
CORE@1shared circulationshared112.21.20 × 10.20
U0@0#2kitchenU0023.25.15 × 4.50
U0@0#4bedroom primaryU0019.13.35 × 5.70
U0@0#3bathroomU006.91.80 × 3.85
U0@0#0entryU003.31.80 × 1.85
U0@0#1livingU0046.44.55 × 10.20
U1@1#2kitchenU1119.94.75 × 4.20
U1@1#3bathroomU1110.44.75 × 2.20
U1@1#4bedroom primaryU1118.14.75 × 3.80
U1@1#0entryU117.24.95 × 1.45
U1@1#1livingU1143.34.95 × 8.75

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