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.

B0015 · best infeasible · seed 0

B0015-nsga2-0-1476

NSGA-IID · violates 4 of 17 benchmark constraints (6 violations). Brief B0015

Plan drawing of a fourplex on a 14.3 by 19.9 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 69 square metres. Dwelling U1 (1BR) has 5 rooms totalling 55 square metres. Dwelling U2 (2BR) has 6 rooms totalling 61 square metres. Dwelling U3 (2BR) has 6 rooms totalling 63 square metres. Building footprint 137 square metres; open space 146 square metres. This design is infeasible; failing categories: bad proportion, daylight failure, insufficient area. Objective scores, higher is better: density 0.97, daylight 0.28, privacy 0.78, circulation 0.61, carbon 0.76, cost 0.12.
B0015 · nsga2 · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a fourplex on a 14.3 by 19.9 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 69 square metres. Dwelling U1 (1BR) has 5 rooms totalling 55 square metres. Dwelling U2 (2BR) has 6 rooms totalling 61 square metres. Dwelling U3 (2BR) has 6 rooms totalling 63 square metres. Building footprint 137 square metres; open space 146 square metres. This design is infeasible; failing categories: bad proportion, daylight failure, insufficient area. Objective scores, higher is better: density 0.97, daylight 0.28, privacy 0.78, circulation 0.61, carbon 0.76, cost 0.12.

Objective vector

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

density
0.967
daylight
0.278
privacy
0.782
circulation
0.608
carbon
0.765
cost
0.118

Reported quantities

FAR proxy (GFA / lot)
0.96
site utilisation
0.979
gross floor area, m²
274.3
footprint, m²
137.1
carbon proxy, kgCO₂e/m² (A1–A3)
345
cost index / m² (unitless)
3.12
worst habitable room, daylight
0.000
circulation share of GFA
17%
open space, net of parking
41%
courtyard void, m²
0.0
plumbing stacks
8
footprint corners
4
preferred adjacencies met
75%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedbedroom_primary clear dim 2.60 < 2.70 m
  • C06max room aspect failedliving aspect 2.92 > 2.60
  • C07min unit area failed2BR 61.1 < 63.0 m^22BR 62.7 < 63.0 m^2
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight failedliving has 0.00 m of window-capable wallbedroom_primary has 0.00 m of window-capable wall
  • 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
U01BR68.85
U11BR54.95
U22BR61.06
U32BR62.76
All 24 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared013.411.15 × 1.20
CORE@1shared circulationshared113.411.15 × 1.20
U0@0#4bedroom primaryU0012.22.95 × 4.15
U0@0#3bathroomU0014.02.95 × 4.75
U0@0#0entryU006.52.95 × 2.20
U0@0#2kitchenU0010.23.25 × 3.15
U0@0#1livingU0025.83.25 × 7.95
U1@0#2kitchenU109.21.80 × 5.10
U1@0#3bathroomU106.41.80 × 3.55
U1@0#0entryU104.41.80 × 2.45
U1@0#4bedroom primaryU1011.83.15 × 3.75
U1@0#1livingU1023.23.15 × 7.35
U3@1#1livingU3127.13.05 × 8.90
U3@1#0entryU313.21.45 × 2.20
U3@1#3bathroomU313.51.60 × 2.20
U3@1#5bedroom secondaryU318.32.60 × 3.20
U3@1#2kitchenU318.32.60 × 3.20
U3@1#4bedroom primaryU3112.22.60 × 4.70
U2@1#2kitchenU2111.62.75 × 4.20
U2@1#1livingU2119.02.75 × 6.90
U2@1#5bedroom secondaryU218.32.75 × 3.00
U2@1#4bedroom primaryU2112.42.75 × 4.50
U2@1#3bathroomU215.12.75 × 1.85
U2@1#0entryU214.82.75 × 1.75

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