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.

B0053 · best infeasible · seed 0

B0053-heuristic-0

HeuristicA · violates 2 of 17 benchmark constraints (3 violations). Brief B0053

Plan drawing of a triplex on a 15.9 by 19.8 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 54 square metres. Dwelling U1 (2BR) has 6 rooms totalling 54 square metres. Dwelling U2 (2BR) has 6 rooms totalling 108 square metres. Building footprint 123 square metres; open space 190 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 1.00, daylight 0.58, privacy 0.81, circulation 0.63, carbon 0.76, cost 0.51.
B0053 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a triplex on a 15.9 by 19.8 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 54 square metres. Dwelling U1 (2BR) has 6 rooms totalling 54 square metres. Dwelling U2 (2BR) has 6 rooms totalling 108 square metres. Building footprint 123 square metres; open space 190 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 1.00, daylight 0.58, privacy 0.81, circulation 0.63, carbon 0.76, cost 0.51.

Objective vector

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

density
1.000
daylight
0.584
privacy
0.812
circulation
0.632
carbon
0.765
cost
0.505

Reported quantities

FAR proxy (GFA / lot)
0.78
site utilisation
1.000
gross floor area, m²
247.0
footprint, m²
123.5
carbon proxy, kgCO₂e/m² (A1–A3)
345
cost index / m² (unitless)
2.52
worst habitable room, daylight
0.122
circulation share of GFA
15%
open space, net of parking
51%
courtyard void, m²
0.0
plumbing stacks
2
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 3.32 > 2.60
  • C07min unit area failed2BR 54.2 < 63.0 m^22BR 54.2 < 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
U02BR54.26
U12BR54.26
U22BR108.46
All 20 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared015.112.60 × 1.20
CORE@1shared circulationshared115.112.60 × 1.20
U0@0#2kitchenU007.93.60 × 2.20
U0@0#3bathroomU003.31.50 × 2.20
U0@0#0entryU002.61.20 × 2.20
U0@0#1livingU0018.66.30 × 2.95
U0@0#4bedroom primaryU0011.23.25 × 3.45
U0@0#5bedroom secondaryU0010.53.05 × 3.45
U1@0#0entryU102.81.20 × 2.30
U1@0#3bathroomU103.51.50 × 2.30
U1@0#2kitchenU108.33.60 × 2.30
U1@0#1livingU1018.96.30 × 3.00
U1@0#4bedroom primaryU1011.93.60 × 3.30
U1@0#5bedroom secondaryU108.92.70 × 3.30
U2@1#2kitchenU2112.56.10 × 2.05
U2@1#3bathroomU2110.95.30 × 2.05
U2@1#0entryU212.51.20 × 2.05
U2@1#1livingU2147.912.60 × 3.80
U2@1#4bedroom primaryU2116.25.90 × 2.75
U2@1#5bedroom secondaryU2118.46.70 × 2.75

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