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-sketch-0-1131

Random sketch + repairF′ · violates 5 of 17 benchmark constraints (6 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 59 square metres. Dwelling U1 (2BR) has 6 rooms totalling 50 square metres. Dwelling U2 (2BR) has 6 rooms totalling 110 square metres. Building footprint 123 square metres; open space 248 square metres. This design is infeasible; failing categories: bad proportion, daylight failure, insufficient area. Objective scores, higher is better: density 0.97, daylight 0.53, privacy 0.89, circulation 0.59, carbon 0.77, cost 0.38.
B0035 · sketch · 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 59 square metres. Dwelling U1 (2BR) has 6 rooms totalling 50 square metres. Dwelling U2 (2BR) has 6 rooms totalling 110 square metres. Building footprint 123 square metres; open space 248 square metres. This design is infeasible; failing categories: bad proportion, daylight failure, insufficient area. Objective scores, higher is better: density 0.97, daylight 0.53, privacy 0.89, circulation 0.59, carbon 0.77, cost 0.38.

Objective vector

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

density
0.968
daylight
0.534
privacy
0.888
circulation
0.589
carbon
0.772
cost
0.375

Reported quantities

FAR proxy (GFA / lot)
0.68
site utilisation
0.979
gross floor area, m²
245.6
footprint, m²
122.8
carbon proxy, kgCO₂e/m² (A1–A3)
342
cost index / m² (unitless)
2.72
worst habitable room, daylight
0.000
circulation share of GFA
18%
open space, net of parking
66%
courtyard void, m²
0.0
plumbing stacks
4
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 failedliving 10.2 < 11.0 m^2
  • C05min room dimension failedbedroom_secondary clear dim 1.85 < 2.20 m
  • C06max room aspect failedbedroom_secondary aspect 2.80 > 2.60
  • C07min unit area failed2BR 59.4 < 63.0 m^22BR 50.2 < 63.0 m^2
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight failedbedroom_primary has 0.00 m of window-capable wall
  • 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
U02BR59.46
U12BR50.26
U22BR109.66
All 20 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared013.210.15 × 1.30
CORE@1shared circulationshared113.210.15 × 1.30
U1@0#4bedroom primaryU1016.12.80 × 5.75
U1@0#1livingU1014.12.80 × 5.05
U1@0#5bedroom secondaryU108.41.85 × 4.55
U1@0#3bathroomU103.51.85 × 1.90
U1@0#2kitchenU105.81.85 × 3.15
U1@0#0entryU102.21.85 × 1.20
U0@0#1livingU0010.23.00 × 3.40
U0@0#2kitchenU009.83.00 × 3.25
U0@0#4bedroom primaryU0012.43.00 × 4.15
U0@0#0entryU003.52.50 × 1.40
U0@0#3bathroomU006.02.50 × 2.40
U0@0#5bedroom secondaryU0017.52.50 × 7.00
U2@1#1livingU2131.35.00 × 6.25
U2@1#4bedroom primaryU2122.85.00 × 4.55
U2@1#0entryU2111.85.15 × 2.30
U2@1#2kitchenU2123.45.15 × 4.55
U2@1#5bedroom secondaryU2110.12.55 × 3.95
U2@1#3bathroomU2110.32.60 × 3.95

Side by side