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.

B0032 · best infeasible · seed 1

B0032-heuristic_nsga2-1-1055

Heuristic-seeded NSGA-IIA+D · violates 1 of 17 benchmark constraints (1 violations). Brief B0032

Plan drawing of a duplex on a 13.9 by 23.0 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 64 square metres. Dwelling U1 (2BR) has 6 rooms totalling 64 square metres. Building footprint 75 square metres; open space 250 square metres. This design is infeasible; failing categories: bad proportion. Objective scores, higher is better: density 0.72, daylight 0.58, privacy 0.86, circulation 0.62, carbon 0.70, cost 0.04.
B0032 · heuristic_nsga2 · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a duplex on a 13.9 by 23.0 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 64 square metres. Dwelling U1 (2BR) has 6 rooms totalling 64 square metres. Building footprint 75 square metres; open space 250 square metres. This design is infeasible; failing categories: bad proportion. Objective scores, higher is better: density 0.72, daylight 0.58, privacy 0.86, circulation 0.62, carbon 0.70, cost 0.04.

Objective vector

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

density
0.722
daylight
0.581
privacy
0.856
circulation
0.616
carbon
0.698
cost
0.044

Reported quantities

FAR proxy (GFA / lot)
0.47
site utilisation
0.819
gross floor area, m²
149.6
footprint, m²
74.8
carbon proxy, kgCO₂e/m² (A1–A3)
369
cost index / m² (unitless)
3.23
worst habitable room, daylight
0.207
circulation share of GFA
18%
open space, net of parking
77%
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 failedliving aspect 2.87 > 2.60
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • 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
U02BR64.56
U12BR64.56
All 14 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.38.60 × 1.20
CORE@1shared circulationshared110.38.60 × 1.20
U0@0#1livingU0022.75.35 × 4.25
U0@0#3bathroomU007.62.35 × 3.25
U0@0#5bedroom secondaryU009.83.00 × 3.25
U0@0#0entryU004.73.25 × 1.45
U0@0#2kitchenU006.53.25 × 2.00
U0@0#4bedroom primaryU0013.23.25 × 4.05
U1@1#2kitchenU118.24.55 × 1.80
U1@1#3bathroomU115.02.80 × 1.80
U1@1#0entryU112.31.25 × 1.80
U1@1#1livingU1125.88.60 × 3.00
U1@1#4bedroom primaryU1114.05.20 × 2.70
U1@1#5bedroom secondaryU119.23.40 × 2.70

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