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.

B0039 · best infeasible · seed 0

B0039-anneal-0-235

Simulated annealingC · violates 1 of 17 benchmark constraints (1 violations). Brief B0039

Plan drawing of a fourplex on a 12.7 by 31.9 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 87 square metres. Dwelling U1 (1BR) has 5 rooms totalling 81 square metres. Dwelling U2 (2BR) has 6 rooms totalling 80 square metres. Dwelling U3 (2BR) has 6 rooms totalling 88 square metres. Building footprint 183 square metres; open space 220 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.83, daylight 0.36, privacy 0.85, circulation 0.60, carbon 0.82, cost 0.53.
B0039 · anneal · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a fourplex on a 12.7 by 31.9 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 87 square metres. Dwelling U1 (1BR) has 5 rooms totalling 81 square metres. Dwelling U2 (2BR) has 6 rooms totalling 80 square metres. Dwelling U3 (2BR) has 6 rooms totalling 88 square metres. Building footprint 183 square metres; open space 220 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.83, daylight 0.36, privacy 0.85, circulation 0.60, carbon 0.82, cost 0.53.

Objective vector

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

density
0.834
daylight
0.360
privacy
0.851
circulation
0.603
carbon
0.824
cost
0.528

Reported quantities

FAR proxy (GFA / lot)
0.90
site utilisation
0.892
gross floor area, m²
365.8
footprint, m²
182.9
carbon proxy, kgCO₂e/m² (A1–A3)
323
cost index / m² (unitless)
2.48
worst habitable room, daylight
0.203
circulation share of GFA
18%
open space, net of parking
47%
courtyard void, m²
0.0
plumbing stacks
5
footprint corners
4
preferred adjacencies met
25%

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
U01BR87.45
U11BR80.75
U22BR80.26
U32BR87.96
All 24 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared014.89.55 × 1.55
CORE@1shared circulationshared114.89.55 × 1.55
U0@0#4bedroom primaryU0017.25.65 × 3.05
U0@0#0entryU0011.35.65 × 2.00
U0@0#1livingU0023.25.65 × 4.10
U0@0#3bathroomU006.03.90 × 1.55
U0@0#2kitchenU0029.63.90 × 7.60
U1@0#3bathroomU109.15.20 × 1.75
U1@0#2kitchenU1034.85.20 × 6.70
U1@0#1livingU1017.44.35 × 4.00
U1@0#0entryU106.34.35 × 1.45
U1@0#4bedroom primaryU1013.14.35 × 3.00
U2@1#0entryU214.03.00 × 1.35
U2@1#1livingU2121.13.00 × 7.05
U2@1#3bathroomU2111.32.65 × 4.25
U2@1#5bedroom secondaryU2116.63.90 × 4.25
U2@1#2kitchenU2115.13.65 × 4.15
U2@1#4bedroom primaryU2112.02.90 × 4.15
U3@1#1livingU3118.73.40 × 5.50
U3@1#2kitchenU317.01.90 × 3.70
U3@1#3bathroomU315.51.50 × 3.70
U3@1#0entryU3113.86.15 × 2.25
U3@1#4bedroom primaryU3123.16.15 × 3.75
U3@1#5bedroom secondaryU3119.76.15 × 3.20

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