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.

B0035 · best infeasible · seed 0

B0035-random-0-324

Random searchB · violates 6 of 17 benchmark constraints (17 violations). Brief B0035

Plan drawing of a triplex on a 14.9 by 24.4 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 58 square metres. Dwelling U1 (2BR) has 6 rooms totalling 42 square metres. Dwelling U2 (2BR) has 6 rooms totalling 100 square metres. Building footprint 111 square metres; open space 258 square metres. This design is infeasible; failing categories: bad proportion, daylight failure, insufficient area, no street access. Objective scores, higher is better: density 0.82, daylight 0.30, privacy 0.82, circulation 0.64, carbon 0.75, cost 0.36.
B0035 · random · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a triplex on a 14.9 by 24.4 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 58 square metres. Dwelling U1 (2BR) has 6 rooms totalling 42 square metres. Dwelling U2 (2BR) has 6 rooms totalling 100 square metres. Building footprint 111 square metres; open space 258 square metres. This design is infeasible; failing categories: bad proportion, daylight failure, insufficient area, no street access. Objective scores, higher is better: density 0.82, daylight 0.30, privacy 0.82, circulation 0.64, carbon 0.75, cost 0.36.

Objective vector

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

density
0.821
daylight
0.301
privacy
0.819
circulation
0.638
carbon
0.750
cost
0.364

Reported quantities

FAR proxy (GFA / lot)
0.61
site utilisation
0.884
gross floor area, m²
221.8
footprint, m²
110.9
carbon proxy, kgCO₂e/m² (A1–A3)
350
cost index / m² (unitless)
2.74
worst habitable room, daylight
0.000
circulation share of GFA
14%
open space, net of parking
70%
courtyard void, m²
0.0
plumbing stacks
3
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 failedbedroom_primary 10.1 < 11.0 m^2bedroom_secondary 6.3 < 7.5 m^2
  • C05min room dimension failedshared_circulation clear dim 1.05 < 1.20 mshared_circulation clear dim 1.05 < 1.20 mbedroom_primary clear dim 2.35 < 2.70 m…and 4 more
  • C06max room aspect failedentry aspect 4.40 > 4.00
  • C07min unit area failed2BR 58.4 < 63.0 m^22BR 42.1 < 63.0 m^2
  • C08unit connectivity passed
  • C09street access failedentry not reachable from the street
  • C10habitable daylight failedbedroom_secondary has 0.00 m of window-capable wallkitchen has 0.00 m of window-capable wallkitchen has 0.00 m of window-capable wall…and 1 more
  • 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
U02BR58.46
U12BR42.16
U22BR100.56
All 20 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.49.90 × 1.05
CORE@1shared circulationshared110.49.90 × 1.05
U1@0#4bedroom primaryU1010.12.35 × 4.30
U1@0#1livingU1013.72.35 × 5.85
U1@0#3bathroomU103.91.80 × 2.15
U1@0#5bedroom secondaryU106.31.80 × 3.50
U1@0#2kitchenU105.91.80 × 3.30
U1@0#0entryU102.21.80 × 1.20
U0@0#4bedroom primaryU0011.82.80 × 4.20
U0@0#2kitchenU0010.12.80 × 3.60
U0@0#3bathroomU003.91.65 × 2.35
U0@0#0entryU002.71.15 × 2.35
U0@0#5bedroom secondaryU0010.62.95 × 3.60
U0@0#1livingU0019.32.95 × 6.55
U2@1#1livingU2132.75.50 × 5.95
U2@1#3bathroomU218.01.90 × 4.20
U2@1#2kitchenU2115.13.60 × 4.20
U2@1#0entryU214.44.40 × 1.00
U2@1#4bedroom primaryU2117.44.40 × 3.95
U2@1#5bedroom secondaryU2122.94.40 × 5.20

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