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 2

B0013-anneal-2-1053

Simulated annealingC · violates 4 of 17 benchmark constraints (7 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 34 square metres. Dwelling U1 (1BR) has 5 rooms totalling 70 square metres. Dwelling U2 (1BR) has 5 rooms totalling 50 square metres. Dwelling U3 (1BR) has 5 rooms totalling 70 square metres. Dwelling U4 (2BR) has 6 rooms totalling 84 square metres. Building footprint 171 square metres; open space 317 square metres. This design is infeasible; failing categories: bad proportion, insufficient area, open space failure. Objective scores, higher is better: density 0.72, daylight 0.47, privacy 0.76, circulation 0.54, carbon 0.69, cost 0.31.
B0013 · anneal · seed 2scale 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 34 square metres. Dwelling U1 (1BR) has 5 rooms totalling 70 square metres. Dwelling U2 (1BR) has 5 rooms totalling 50 square metres. Dwelling U3 (1BR) has 5 rooms totalling 70 square metres. Dwelling U4 (2BR) has 6 rooms totalling 84 square metres. Building footprint 171 square metres; open space 317 square metres. This design is infeasible; failing categories: bad proportion, insufficient area, open space failure. Objective scores, higher is better: density 0.72, daylight 0.47, privacy 0.76, circulation 0.54, carbon 0.69, cost 0.31.

Objective vector

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

density
0.718
daylight
0.470
privacy
0.761
circulation
0.541
carbon
0.692
cost
0.307

Reported quantities

FAR proxy (GFA / lot)
0.70
site utilisation
0.817
gross floor area, m²
341.4
footprint, m²
170.7
carbon proxy, kgCO₂e/m² (A1–A3)
371
cost index / m² (unitless)
2.82
worst habitable room, daylight
0.155
circulation share of GFA
24%
open space, net of parking
65%
courtyard void, m²
36.3
plumbing stacks
4
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 failedkitchen 5.3 < 5.5 m^2
  • C05min room dimension failedbedroom_primary clear dim 2.40 < 2.70 mbedroom_primary clear dim 2.45 < 2.70 mliving clear dim 2.50 < 2.70 m
  • C06max room aspect failedbedroom_primary aspect 2.80 > 2.40living aspect 2.92 > 2.60
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency passed
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision failedcourtyard narrowest extent 2.5 m
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U0studio34.24
U11BR70.35
U21BR49.65
U31BR70.35
U42BR83.86
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared016.613.30 × 1.25
CORE@1shared circulationshared116.613.30 × 1.25
U2@0#0entryU2017.53.50 × 5.00
U2@0#1livingU2011.93.50 × 3.40
U2@0#4bedroom primaryU2011.32.40 × 4.70
U2@0#2kitchenU205.32.40 × 2.20
U2@0#3bathroomU203.62.40 × 1.50
U0@0#3bathroomU008.52.55 × 3.35
U0@0#2kitchenU006.22.55 × 2.45
U0@0#0entryU005.03.35 × 1.50
U0@0#1livingU0014.43.35 × 4.30
U4@1#0entryU4112.42.45 × 5.05
U4@1#5bedroom secondaryU4113.72.45 × 5.60
U4@1#3bathroomU418.72.45 × 3.55
U4@1#1livingU4117.63.45 × 5.10
U4@1#2kitchenU418.33.45 × 2.40
U4@1#4bedroom primaryU4123.13.45 × 6.70
U1@0#4bedroom primaryU1017.14.95 × 3.45
U1@0#3bathroomU108.43.10 × 2.70
U1@0#0entryU107.43.10 × 2.40
U1@0#2kitchenU109.41.85 × 5.10
U1@0#1livingU1028.04.95 × 5.65
U3@1#0entryU316.52.45 × 2.65
U3@1#2kitchenU3111.52.45 × 4.70
U3@1#4bedroom primaryU3116.82.45 × 6.85
U3@1#1livingU3118.32.50 × 7.30
U3@1#3bathroomU3117.32.50 × 6.90

Side by side