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.

B0013 · best infeasible · seed 1

B0013-nsga2-1-1493

NSGA-IID · violates 4 of 17 benchmark constraints (4 violations). Brief B0013

Plan drawing of a courtyard on a 17.3 by 28.1 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 32 square metres. Dwelling U1 (1BR) has 5 rooms totalling 59 square metres. Dwelling U2 (1BR) has 5 rooms totalling 47 square metres. Dwelling U3 (1BR) has 5 rooms totalling 59 square metres. Dwelling U4 (2BR) has 6 rooms totalling 79 square metres. Building footprint 159 square metres; open space 334 square metres. This design is infeasible; failing categories: bad proportion, insufficient area, open space failure. Objective scores, higher is better: density 0.63, daylight 0.39, privacy 0.76, circulation 0.52, carbon 0.69, cost 0.06.
B0013 · nsga2 · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 17.3 by 28.1 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 32 square metres. Dwelling U1 (1BR) has 5 rooms totalling 59 square metres. Dwelling U2 (1BR) has 5 rooms totalling 47 square metres. Dwelling U3 (1BR) has 5 rooms totalling 59 square metres. Dwelling U4 (2BR) has 6 rooms totalling 79 square metres. Building footprint 159 square metres; open space 334 square metres. This design is infeasible; failing categories: bad proportion, insufficient area, open space failure. Objective scores, higher is better: density 0.63, daylight 0.39, privacy 0.76, circulation 0.52, carbon 0.69, cost 0.06.

Objective vector

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

density
0.635
daylight
0.393
privacy
0.761
circulation
0.523
carbon
0.687
cost
0.058

Reported quantities

FAR proxy (GFA / lot)
0.66
site utilisation
0.763
gross floor area, m²
318.8
footprint, m²
159.4
carbon proxy, kgCO₂e/m² (A1–A3)
373
cost index / m² (unitless)
3.21
worst habitable room, daylight
0.156
circulation share of GFA
24%
open space, net of parking
67%
courtyard void, m²
32.5
plumbing stacks
8
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 failedkitchen clear dim 1.75 < 1.80 m
  • C06max room aspect failedliving aspect 3.71 > 2.60
  • C07min unit area failedstudio 32.2 < 33.0 m^2
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency passed
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision failedcourtyard 32.5 < 34.3 m^2
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U0studio32.24
U11BR59.55
U21BR46.95
U31BR59.55
U42BR79.16
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared020.913.05 × 1.60
CORE@1shared circulationshared120.913.05 × 1.60
U2@0#4bedroom primaryU2016.04.00 × 4.00
U2@0#1livingU2014.04.00 × 3.50
U2@0#3bathroomU205.22.25 × 2.30
U2@0#2kitchenU208.12.25 × 3.60
U2@0#0entryU203.62.25 × 1.60
U0@0#2kitchenU005.82.85 × 2.05
U0@0#0entryU004.12.85 × 1.45
U0@0#3bathroomU004.72.85 × 1.65
U0@0#1livingU0017.53.40 × 5.15
U4@1#0entryU416.72.75 × 2.45
U4@1#1livingU4128.12.75 × 10.20
U4@1#4bedroom primaryU4123.33.50 × 6.65
U4@1#5bedroom secondaryU417.93.50 × 2.25
U4@1#2kitchenU417.53.50 × 2.15
U4@1#3bathroomU415.63.50 × 1.60
U1@0#1livingU1021.72.95 × 7.35
U1@0#4bedroom primaryU1015.62.95 × 5.30
U1@0#3bathroomU104.31.75 × 2.45
U1@0#2kitchenU105.61.75 × 3.20
U1@0#0entryU1012.31.75 × 7.00
U3@1#1livingU3121.82.90 × 7.50
U3@1#4bedroom primaryU3114.92.90 × 5.15
U3@1#0entryU317.61.80 × 4.20
U3@1#2kitchenU318.81.80 × 4.90
U3@1#3bathroomU316.41.80 × 3.55

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