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.

B0037 · best infeasible · seed 0

B0037-random-0-1447

Random searchB · violates 6 of 17 benchmark constraints (20 violations). Brief B0037

Plan drawing of a courtyard on a 19.7 by 27.7 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 30 square metres. Dwelling U1 (1BR) has 5 rooms totalling 51 square metres. Dwelling U2 (1BR) has 5 rooms totalling 58 square metres. Dwelling U3 (1BR) has 5 rooms totalling 58 square metres. Dwelling U4 (2BR) has 6 rooms totalling 82 square metres. Building footprint 167 square metres; open space 382 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion, daylight failure, insufficient area, no street access. Objective scores, higher is better: density 0.43, daylight 0.49, privacy 0.79, circulation 0.52, carbon 0.69, cost 0.14.
B0037 · random · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 19.7 by 27.7 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 30 square metres. Dwelling U1 (1BR) has 5 rooms totalling 51 square metres. Dwelling U2 (1BR) has 5 rooms totalling 58 square metres. Dwelling U3 (1BR) has 5 rooms totalling 58 square metres. Dwelling U4 (2BR) has 6 rooms totalling 82 square metres. Building footprint 167 square metres; open space 382 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion, daylight failure, insufficient area, no street access. Objective scores, higher is better: density 0.43, daylight 0.49, privacy 0.79, circulation 0.52, carbon 0.69, cost 0.14.

Objective vector

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

density
0.434
daylight
0.494
privacy
0.789
circulation
0.525
carbon
0.685
cost
0.139

Reported quantities

FAR proxy (GFA / lot)
0.61
site utilisation
0.632
gross floor area, m²
333.5
footprint, m²
166.8
carbon proxy, kgCO₂e/m² (A1–A3)
373
cost index / m² (unitless)
3.08
worst habitable room, daylight
0.000
circulation share of GFA
22%
open space, net of parking
69%
courtyard void, m²
48.0
plumbing stacks
7
footprint corners
8
preferred adjacencies met
25%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedbedroom_primary clear dim 2.25 < 2.70 mliving clear dim 2.05 < 2.70 mkitchen clear dim 1.50 < 1.80 m…and 4 more
  • C06max room aspect failedbedroom_primary aspect 3.33 > 2.40living aspect 4.44 > 2.60kitchen aspect 4.23 > 3.00…and 5 more
  • C07min unit area failedstudio 30.3 < 33.0 m^2
  • C08unit connectivity passed
  • C09street access failedentry not reachable from the streetentry not reachable from the street
  • C10habitable daylight failedliving has 0.00 m of window-capable wall
  • C11required adjacency failedrequired adjacency entry-living absent
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision passed
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U0studio30.34
U11BR51.25
U21BR57.75
U31BR57.75
U42BR81.56
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared027.515.30 × 1.80
CORE@1shared circulationshared127.515.30 × 1.80
U1@0#3bathroomU107.02.25 × 3.10
U1@0#0entryU102.92.25 × 1.30
U1@0#4bedroom primaryU1016.92.25 × 7.50
U1@0#2kitchenU105.72.05 × 2.80
U1@0#1livingU1018.72.05 × 9.10
U0@0#3bathroomU005.11.50 × 3.40
U0@0#2kitchenU009.51.50 × 6.35
U0@0#0entryU003.21.50 × 2.15
U0@0#1livingU0012.51.05 × 11.90
U4@1#5bedroom secondaryU4113.83.55 × 3.90
U4@1#2kitchenU4112.23.55 × 3.45
U4@1#4bedroom primaryU4116.23.55 × 4.55
U4@1#3bathroomU419.63.30 × 2.90
U4@1#1livingU4124.83.30 × 7.50
U4@1#0entryU415.03.30 × 1.50
U2@0#3bathroomU204.32.95 × 1.45
U2@0#1livingU2030.82.95 × 10.45
U2@0#0entryU202.41.90 × 1.25
U2@0#4bedroom primaryU2011.71.90 × 6.15
U2@0#2kitchenU208.61.90 × 4.50
U3@1#4bedroom primaryU3112.62.15 × 5.85
U3@1#3bathroomU314.52.15 × 2.10
U3@1#2kitchenU318.52.15 × 3.95
U3@1#0entryU315.02.70 × 1.85
U3@1#1livingU3127.12.70 × 10.05

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