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 2

B0032-random-2-920

Random searchB · violates 2 of 17 benchmark constraints (3 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 62 square metres. Dwelling U1 (2BR) has 6 rooms totalling 62 square metres. Building footprint 73 square metres; open space 246 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.68, daylight 0.75, privacy 0.91, circulation 0.55, carbon 0.69, cost 0.01.
B0032 · random · seed 2scale 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 62 square metres. Dwelling U1 (2BR) has 6 rooms totalling 62 square metres. Building footprint 73 square metres; open space 246 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.68, daylight 0.75, privacy 0.91, circulation 0.55, carbon 0.69, cost 0.01.

Objective vector

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

density
0.684
daylight
0.751
privacy
0.913
circulation
0.553
carbon
0.694
cost
0.015

Reported quantities

FAR proxy (GFA / lot)
0.45
site utilisation
0.795
gross floor area, m²
145.2
footprint, m²
72.6
carbon proxy, kgCO₂e/m² (A1–A3)
370
cost index / m² (unitless)
3.28
worst habitable room, daylight
0.513
circulation share of GFA
21%
open space, net of parking
77%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
50%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedbedroom_secondary clear dim 1.90 < 2.20 m
  • C06max room aspect passed
  • C07min unit area failed2BR 62.4 < 63.0 m^22BR 62.4 < 63.0 m^2
  • 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
U02BR62.46
U12BR62.46
All 14 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.21.30 × 7.85
CORE@1shared circulationshared110.21.30 × 7.85
U0@0#5bedroom secondaryU009.82.60 × 3.75
U0@0#0entryU003.52.40 × 1.45
U0@0#3bathroomU005.52.40 × 2.30
U0@0#4bedroom primaryU0020.55.00 × 4.10
U0@0#1livingU0015.32.95 × 5.20
U0@0#2kitchenU007.82.95 × 2.65
U1@1#5bedroom secondaryU117.91.90 × 4.15
U1@1#4bedroom primaryU1111.82.85 × 4.15
U1@1#3bathroomU115.91.60 × 3.70
U1@1#2kitchenU1111.73.15 × 3.70
U1@1#1livingU1118.73.20 × 5.85
U1@1#0entryU116.43.20 × 2.00

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