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.

B0067 · best infeasible · seed 1

B0067-anneal-1-1098

Simulated annealingC · violates 3 of 17 benchmark constraints (5 violations). Brief B0067

Plan drawing of a courtyard on a 21.8 by 22.2 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 33 square metres. Dwelling U1 (1BR) has 5 rooms totalling 45 square metres. Dwelling U2 (1BR) has 5 rooms totalling 57 square metres. Dwelling U3 (1BR) has 5 rooms totalling 57 square metres. Dwelling U4 (2BR) has 6 rooms totalling 78 square metres. Building footprint 174 square metres; open space 308 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.60, daylight 0.47, privacy 0.82, circulation 0.52, carbon 0.71, cost 0.20.
B0067 · anneal · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 21.8 by 22.2 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 33 square metres. Dwelling U1 (1BR) has 5 rooms totalling 45 square metres. Dwelling U2 (1BR) has 5 rooms totalling 57 square metres. Dwelling U3 (1BR) has 5 rooms totalling 57 square metres. Dwelling U4 (2BR) has 6 rooms totalling 78 square metres. Building footprint 174 square metres; open space 308 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.60, daylight 0.47, privacy 0.82, circulation 0.52, carbon 0.71, cost 0.20.

Objective vector

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

density
0.597
daylight
0.473
privacy
0.824
circulation
0.522
carbon
0.706
cost
0.196

Reported quantities

FAR proxy (GFA / lot)
0.72
site utilisation
0.738
gross floor area, m²
347.4
footprint, m²
173.7
carbon proxy, kgCO₂e/m² (A1–A3)
366
cost index / m² (unitless)
3.00
worst habitable room, daylight
0.238
circulation share of GFA
34%
open space, net of parking
64%
courtyard void, m²
60.5
plumbing stacks
7
footprint corners
8
preferred adjacencies met
75%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area failedbedroom_primary 10.0 < 11.0 m^2
  • C05min room dimension failedbedroom_secondary clear dim 2.05 < 2.20 mliving clear dim 2.55 < 2.70 mbedroom_primary clear dim 2.60 < 2.70 m
  • C06max room aspect passed
  • C07min unit area failed1BR 44.7 < 46.0 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
U0studio33.44
U11BR44.75
U21BR56.65
U31BR56.65
U42BR78.16
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared038.917.70 × 2.20
CORE@1shared circulationshared138.917.70 × 2.20
U1@0#4bedroom primaryU1014.63.65 × 4.00
U1@0#3bathroomU108.43.65 × 2.30
U1@0#1livingU1011.03.45 × 3.20
U1@0#2kitchenU106.42.05 × 3.10
U1@0#0entryU104.31.40 × 3.10
U0@0#1livingU0014.33.05 × 4.70
U0@0#0entryU005.74.05 × 1.40
U0@0#2kitchenU007.34.05 × 1.80
U0@0#3bathroomU006.14.05 × 1.50
U4@1#1livingU4126.63.85 × 6.90
U4@1#3bathroomU417.41.80 × 4.10
U4@1#5bedroom secondaryU418.42.05 × 4.10
U4@1#0entryU419.13.25 × 2.80
U4@1#2kitchenU417.33.25 × 2.25
U4@1#4bedroom primaryU4119.33.25 × 5.95
U2@0#3bathroomU204.62.55 × 1.80
U2@0#1livingU2016.82.55 × 6.60
U2@0#0entryU206.62.55 × 2.60
U2@0#4bedroom primaryU2015.32.60 × 5.90
U2@0#2kitchenU2013.32.60 × 5.10
U3@1#0entryU3113.92.20 × 6.30
U3@1#3bathroomU3110.32.20 × 4.70
U3@1#2kitchenU318.02.95 × 2.70
U3@1#1livingU3114.52.95 × 4.90
U3@1#4bedroom primaryU3110.02.95 × 3.40

Side by side