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-heuristic_nsga2-0-269

Heuristic-seeded NSGA-IIA+D · violates 3 of 17 benchmark constraints (4 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 55 square metres. Dwelling U1 (2BR) has 6 rooms totalling 58 square metres. Dwelling U2 (2BR) has 6 rooms totalling 113 square metres. Building footprint 125 square metres; open space 242 square metres. This design is infeasible; failing categories: adjacency violation, daylight failure, insufficient area. Objective scores, higher is better: density 1.00, daylight 0.54, privacy 0.78, circulation 0.69, carbon 0.78, cost 0.40.
B0035 · heuristic_nsga2 · 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 55 square metres. Dwelling U1 (2BR) has 6 rooms totalling 58 square metres. Dwelling U2 (2BR) has 6 rooms totalling 113 square metres. Building footprint 125 square metres; open space 242 square metres. This design is infeasible; failing categories: adjacency violation, daylight failure, insufficient area. Objective scores, higher is better: density 1.00, daylight 0.54, privacy 0.78, circulation 0.69, carbon 0.78, cost 0.40.

Objective vector

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

density
1.000
daylight
0.544
privacy
0.783
circulation
0.689
carbon
0.779
cost
0.396

Reported quantities

FAR proxy (GFA / lot)
0.69
site utilisation
1.000
gross floor area, m²
250.9
footprint, m²
125.5
carbon proxy, kgCO₂e/m² (A1–A3)
340
cost index / m² (unitless)
2.69
worst habitable room, daylight
0.000
circulation share of GFA
13%
open space, net of parking
65%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
0%

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 failed2BR 55.1 < 63.0 m^22BR 58.1 < 63.0 m^2
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight failedliving has 0.00 m of window-capable wall
  • C11required adjacency failedrequired adjacency kitchen-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
U02BR55.16
U12BR58.16
U22BR113.26
All 20 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared012.210.20 × 1.20
CORE@1shared circulationshared112.210.20 × 1.20
U1@0#2kitchenU1012.55.70 × 2.20
U1@0#0entryU102.61.20 × 2.20
U1@0#3bathroomU107.33.30 × 2.20
U1@0#4bedroom primaryU1016.34.65 × 3.50
U1@0#1livingU1011.23.20 × 3.50
U1@0#5bedroom secondaryU108.22.35 × 3.50
U0@0#2kitchenU009.25.10 × 1.80
U0@0#3bathroomU006.83.75 × 1.80
U0@0#0entryU002.41.35 × 1.80
U0@0#4bedroom primaryU0011.53.20 × 3.60
U0@0#5bedroom secondaryU0010.83.00 × 3.60
U0@0#1livingU0014.44.00 × 3.60
U2@1#2kitchenU2114.56.30 × 2.30
U2@1#3bathroomU216.12.65 × 2.30
U2@1#0entryU212.91.25 × 2.30
U2@1#1livingU2157.110.20 × 5.60
U2@1#4bedroom primaryU2122.67.05 × 3.20
U2@1#5bedroom secondaryU2110.13.15 × 3.20

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