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.

B0017 · best infeasible · seed 0

B0017-heuristic-0

HeuristicA · violates 2 of 17 benchmark constraints (3 violations). Brief B0017

Plan drawing of a triplex on a 16.3 by 19.4 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 55 square metres. Dwelling U1 (2BR) has 6 rooms totalling 55 square metres. Dwelling U2 (2BR) has 6 rooms totalling 110 square metres. Building footprint 126 square metres; open space 192 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.95, daylight 0.54, privacy 0.77, circulation 0.63, carbon 0.77, cost 0.52.
B0017 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a triplex on a 16.3 by 19.4 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 55 square metres. Dwelling U1 (2BR) has 6 rooms totalling 55 square metres. Dwelling U2 (2BR) has 6 rooms totalling 110 square metres. Building footprint 126 square metres; open space 192 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.95, daylight 0.54, privacy 0.77, circulation 0.63, carbon 0.77, cost 0.52.

Objective vector

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

density
0.948
daylight
0.536
privacy
0.771
circulation
0.628
carbon
0.770
cost
0.521

Reported quantities

FAR proxy (GFA / lot)
0.80
site utilisation
0.966
gross floor area, m²
252.4
footprint, m²
126.2
carbon proxy, kgCO₂e/m² (A1–A3)
343
cost index / m² (unitless)
2.49
worst habitable room, daylight
0.134
circulation share of GFA
16%
open space, net of parking
55%
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 3.31 > 2.60
  • C07min unit area failed2BR 55.4 < 63.0 m^22BR 54.9 < 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
U02BR55.46
U12BR54.96
U22BR110.36
All 20 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared015.912.75 × 1.25
CORE@1shared circulationshared115.912.75 × 1.25
U0@0#4bedroom primaryU0011.03.10 × 3.55
U0@0#5bedroom secondaryU0011.73.30 × 3.55
U0@0#1livingU0019.56.40 × 3.05
U0@0#2kitchenU007.43.60 × 2.05
U0@0#3bathroomU003.31.60 × 2.05
U0@0#0entryU002.51.20 × 2.05
U1@0#4bedroom primaryU1011.43.35 × 3.40
U1@0#5bedroom secondaryU1010.23.00 × 3.40
U1@0#1livingU1019.46.35 × 3.05
U1@0#0entryU102.61.20 × 2.20
U1@0#3bathroomU103.31.50 × 2.20
U1@0#2kitchenU108.03.65 × 2.20
U2@1#4bedroom primaryU2115.95.80 × 2.75
U2@1#5bedroom secondaryU2119.16.95 × 2.75
U2@1#1livingU2149.112.75 × 3.85
U2@1#2kitchenU2112.36.00 × 2.05
U2@1#3bathroomU2111.35.50 × 2.05
U2@1#0entryU212.61.25 × 2.05

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