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.

B0051 · best infeasible · seed 0

B0051-heuristic-0

HeuristicA · violates 1 of 17 benchmark constraints (1 violations). Brief B0051

Plan drawing of a fourplex on a 12.0 by 29.2 metre lot, 2 storeys, 4 dwellings, 26 rooms. Dwelling U0 (2BR) has 6 rooms totalling 68 square metres. Dwelling U1 (2BR) has 6 rooms totalling 70 square metres. Dwelling U2 (2BR) has 6 rooms totalling 66 square metres. Dwelling U3 (2BR) has 6 rooms totalling 72 square metres. Building footprint 149 square metres; open space 195 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.92, daylight 0.42, privacy 0.78, circulation 0.69, carbon 0.78, cost 0.54.
B0051 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a fourplex on a 12.0 by 29.2 metre lot, 2 storeys, 4 dwellings, 26 rooms. Dwelling U0 (2BR) has 6 rooms totalling 68 square metres. Dwelling U1 (2BR) has 6 rooms totalling 70 square metres. Dwelling U2 (2BR) has 6 rooms totalling 66 square metres. Dwelling U3 (2BR) has 6 rooms totalling 72 square metres. Building footprint 149 square metres; open space 195 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.92, daylight 0.42, privacy 0.78, circulation 0.69, carbon 0.78, cost 0.54.

Objective vector

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

density
0.920
daylight
0.418
privacy
0.777
circulation
0.694
carbon
0.783
cost
0.540

Reported quantities

FAR proxy (GFA / lot)
0.85
site utilisation
0.948
gross floor area, m²
298.6
footprint, m²
149.3
carbon proxy, kgCO₂e/m² (A1–A3)
338
cost index / m² (unitless)
2.46
worst habitable room, daylight
0.178
circulation share of GFA
11%
open space, net of parking
48%
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 passed
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access failedentry not reachable from the street
  • 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
U02BR67.76
U12BR69.76
U22BR65.66
U32BR71.86
All 26 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared012.08.25 × 1.45
CORE@1shared circulationshared112.08.25 × 1.45
U1@0#2kitchenU1010.25.10 × 2.00
U1@0#3bathroomU103.91.95 × 2.00
U1@0#0entryU102.41.20 × 2.00
U1@0#1livingU1030.98.25 × 3.75
U1@0#4bedroom primaryU1012.84.75 × 2.70
U1@0#5bedroom secondaryU109.43.50 × 2.70
U0@0#2kitchenU009.95.10 × 1.95
U0@0#3bathroomU003.81.95 × 1.95
U0@0#0entryU002.31.20 × 1.95
U0@0#1livingU0026.88.25 × 3.25
U0@0#4bedroom primaryU0016.55.50 × 3.00
U0@0#5bedroom secondaryU008.32.75 × 3.00
U3@1#2kitchenU316.63.65 × 1.80
U3@1#3bathroomU316.13.40 × 1.80
U3@1#0entryU312.21.20 × 1.80
U3@1#1livingU3133.08.25 × 4.00
U3@1#4bedroom primaryU3113.84.75 × 2.90
U3@1#5bedroom secondaryU3110.23.50 × 2.90
U2@1#2kitchenU218.34.35 × 1.90
U2@1#3bathroomU215.02.65 × 1.90
U2@1#0entryU212.41.25 × 1.90
U2@1#1livingU2127.68.25 × 3.35
U2@1#4bedroom primaryU2114.25.25 × 2.70
U2@1#5bedroom secondaryU218.13.00 × 2.70

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