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.

B0031 · best infeasible · seed 0

B0031-heuristic-0

HeuristicA · violates 1 of 17 benchmark constraints (1 violations). Brief B0031

Plan drawing of a courtyard on a 16.2 by 25.5 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 69 square metres. Dwelling U1 (2BR) has 6 rooms totalling 74 square metres. Dwelling U2 (2BR) has 6 rooms totalling 69 square metres. Dwelling U3 (2BR) has 6 rooms totalling 74 square metres. Building footprint 161 square metres; open space 251 square metres. This design is infeasible; failing categories: open space failure. Objective scores, higher is better: density 0.80, daylight 0.40, privacy 0.76, circulation 0.66, carbon 0.71, cost 0.41.
B0031 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 16.2 by 25.5 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 69 square metres. Dwelling U1 (2BR) has 6 rooms totalling 74 square metres. Dwelling U2 (2BR) has 6 rooms totalling 69 square metres. Dwelling U3 (2BR) has 6 rooms totalling 74 square metres. Building footprint 161 square metres; open space 251 square metres. This design is infeasible; failing categories: open space failure. Objective scores, higher is better: density 0.80, daylight 0.40, privacy 0.76, circulation 0.66, carbon 0.71, cost 0.41.

Objective vector

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

density
0.800
daylight
0.400
privacy
0.757
circulation
0.663
carbon
0.714
cost
0.412

Reported quantities

FAR proxy (GFA / lot)
0.78
site utilisation
0.870
gross floor area, m²
321.8
footprint, m²
160.9
carbon proxy, kgCO₂e/m² (A1–A3)
363
cost index / m² (unitless)
2.66
worst habitable room, daylight
0.153
circulation share of GFA
14%
open space, net of parking
61%
courtyard void, m²
18.8
plumbing stacks
3
footprint corners
8
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 passed
  • C10habitable daylight passed
  • C11required adjacency passed
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision failedcourtyard 18.8 < 22.1 m^2
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U01BR69.55
U12BR74.46
U22BR69.56
U32BR74.46
All 25 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared017.013.05 × 1.30
CORE@1shared circulationshared117.013.05 × 1.30
U1@0#2kitchenU106.32.85 × 2.20
U1@0#3bathroomU104.42.00 × 2.20
U1@0#0entryU102.61.20 × 2.20
U1@0#1livingU1024.56.05 × 4.05
U1@0#4bedroom primaryU1018.83.10 × 6.05
U1@0#5bedroom secondaryU1017.82.95 × 6.05
U3@1#2kitchenU316.32.85 × 2.20
U3@1#3bathroomU314.42.00 × 2.20
U3@1#0entryU312.61.20 × 2.20
U3@1#1livingU3124.56.05 × 4.05
U3@1#4bedroom primaryU3118.83.10 × 6.05
U3@1#5bedroom secondaryU3117.82.95 × 6.05
U0@0#0entryU003.61.25 × 2.85
U0@0#3bathroomU006.32.20 × 2.85
U0@0#2kitchenU006.32.20 × 2.85
U0@0#1livingU0018.15.65 × 3.20
U0@0#4bedroom primaryU0035.35.65 × 6.25
U2@1#0entryU212.61.20 × 2.20
U2@1#3bathroomU213.51.60 × 2.20
U2@1#2kitchenU216.32.85 × 2.20
U2@1#1livingU2122.95.65 × 4.05
U2@1#4bedroom primaryU2116.62.75 × 6.05
U2@1#5bedroom secondaryU2117.52.90 × 6.05

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