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.

B0069 · best infeasible · seed 1

B0069-anneal-1-363

Simulated annealingC · violates 4 of 17 benchmark constraints (4 violations). Brief B0069

Plan drawing of a fourplex on a 16.4 by 23.7 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 51 square metres. Dwelling U1 (1BR) has 5 rooms totalling 77 square metres. Dwelling U2 (2BR) has 6 rooms totalling 63 square metres. Dwelling U3 (2BR) has 6 rooms totalling 65 square metres. Building footprint 144 square metres; open space 244 square metres. This design is infeasible; failing categories: bad proportion, daylight failure, insufficient area. Objective scores, higher is better: density 0.96, daylight 0.47, privacy 0.75, circulation 0.60, carbon 0.77, cost 0.40.
B0069 · anneal · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a fourplex on a 16.4 by 23.7 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 51 square metres. Dwelling U1 (1BR) has 5 rooms totalling 77 square metres. Dwelling U2 (2BR) has 6 rooms totalling 63 square metres. Dwelling U3 (2BR) has 6 rooms totalling 65 square metres. Building footprint 144 square metres; open space 244 square metres. This design is infeasible; failing categories: bad proportion, daylight failure, insufficient area. Objective scores, higher is better: density 0.96, daylight 0.47, privacy 0.75, circulation 0.60, carbon 0.77, cost 0.40.

Objective vector

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

density
0.962
daylight
0.470
privacy
0.746
circulation
0.603
carbon
0.773
cost
0.399

Reported quantities

FAR proxy (GFA / lot)
0.74
site utilisation
0.976
gross floor area, m²
288.0
footprint, m²
144.0
carbon proxy, kgCO₂e/m² (A1–A3)
342
cost index / m² (unitless)
2.68
worst habitable room, daylight
0.000
circulation share of GFA
21%
open space, net of parking
59%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
75%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedentry clear dim 0.95 < 1.20 m
  • C06max room aspect failedbathroom aspect 3.50 > 3.00
  • C07min unit area failed2BR 62.8 < 63.0 m^2
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight failedkitchen 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
U01BR51.15
U11BR76.75
U22BR62.86
U32BR65.06
All 24 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared016.212.00 × 1.35
CORE@1shared circulationshared116.212.00 × 1.35
U0@0#2kitchenU009.31.85 × 5.05
U0@0#1livingU0014.92.95 × 5.05
U0@0#3bathroomU007.62.70 × 2.80
U0@0#0entryU005.92.10 × 2.80
U0@0#4bedroom primaryU0013.44.80 × 2.80
U1@0#2kitchenU107.83.20 × 2.45
U1@0#1livingU1026.23.20 × 8.20
U1@0#4bedroom primaryU1016.04.00 × 4.00
U1@0#0entryU1014.02.10 × 6.65
U1@0#3bathroomU1012.61.90 × 6.65
U3@1#2kitchenU315.52.75 × 2.00
U3@1#5bedroom secondaryU3111.42.75 × 4.15
U3@1#4bedroom primaryU3112.42.75 × 4.50
U3@1#1livingU3122.43.35 × 6.70
U3@1#3bathroomU317.51.90 × 3.95
U3@1#0entryU315.71.45 × 3.95
U2@1#5bedroom secondaryU2118.13.15 × 5.75
U2@1#2kitchenU216.03.15 × 1.90
U2@1#3bathroomU216.62.20 × 3.00
U2@1#0entryU212.90.95 × 3.00
U2@1#4bedroom primaryU2112.82.75 × 4.65
U2@1#1livingU2116.52.75 × 6.00

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