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.

B0043 · privacy-optimal · seed 0

B0043-nsga2-0-1402

NSGA-IID · meets all 17 benchmark constraints. Brief B0043

Plan drawing of a courtyard on a 19.9 by 25.6 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 69 square metres. Dwelling U1 (2BR) has 6 rooms totalling 72 square metres. Dwelling U2 (2BR) has 6 rooms totalling 69 square metres. Dwelling U3 (2BR) has 6 rooms totalling 72 square metres. Building footprint 174 square metres; open space 342 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.61, daylight 0.60, privacy 0.81, circulation 0.50, carbon 0.74, cost 0.28.
B0043 · nsga2 · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a courtyard on a 19.9 by 25.6 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 69 square metres. Dwelling U1 (2BR) has 6 rooms totalling 72 square metres. Dwelling U2 (2BR) has 6 rooms totalling 69 square metres. Dwelling U3 (2BR) has 6 rooms totalling 72 square metres. Building footprint 174 square metres; open space 342 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.61, daylight 0.60, privacy 0.81, circulation 0.50, carbon 0.74, cost 0.28.

Objective vector

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

density
0.609
daylight
0.603
privacy
0.809
circulation
0.502
carbon
0.736
cost
0.282

Reported quantities

FAR proxy (GFA / lot)
0.68
site utilisation
0.746
gross floor area, m²
348.1
footprint, m²
174.1
carbon proxy, kgCO₂e/m² (A1–A3)
355
cost index / m² (unitless)
2.86
worst habitable room, daylight
0.190
circulation share of GFA
25%
open space, net of parking
66%
courtyard void, m²
34.5
plumbing stacks
7
footprint corners
8
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 passed
  • C06max room aspect passed
  • 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
U01BR68.65
U12BR72.06
U22BR68.66
U32BR72.06
All 25 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared033.415.20 × 2.20
CORE@1shared circulationshared133.415.20 × 2.20
U1@0#0entryU105.12.90 × 1.75
U1@0#5bedroom secondaryU108.62.90 × 2.95
U1@0#4bedroom primaryU1019.02.90 × 6.55
U1@0#1livingU1027.13.50 × 7.75
U1@0#2kitchenU107.02.00 × 3.50
U1@0#3bathroomU105.31.50 × 3.50
U3@1#0entryU314.51.40 × 3.20
U3@1#3bathroomU316.42.00 × 3.20
U3@1#1livingU3127.43.40 × 8.05
U3@1#4bedroom primaryU3113.83.00 × 4.60
U3@1#2kitchenU319.23.00 × 3.05
U3@1#5bedroom secondaryU3110.83.00 × 3.60
U0@0#1livingU0024.53.20 × 7.65
U0@0#3bathroomU0011.53.20 × 3.60
U0@0#2kitchenU007.12.90 × 2.45
U0@0#0entryU007.72.90 × 2.65
U0@0#4bedroom primaryU0017.82.90 × 6.15
U2@1#1livingU2122.83.35 × 6.80
U2@1#4bedroom primaryU2114.93.35 × 4.45
U2@1#0entryU214.42.75 × 1.60
U2@1#3bathroomU214.52.75 × 1.65
U2@1#2kitchenU219.82.75 × 3.55
U2@1#5bedroom secondaryU2112.22.75 × 4.45

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