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 0

B0013-heuristic_nsga2-0-230

Heuristic-seeded NSGA-IIA+D · violates 1 of 17 benchmark constraints (1 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 78 square metres. Dwelling U2 (1BR) has 5 rooms totalling 48 square metres. Dwelling U3 (1BR) has 5 rooms totalling 78 square metres. Dwelling U4 (2BR) has 6 rooms totalling 83 square metres. Building footprint 177 square metres; open space 317 square metres. This design is infeasible; failing categories: open space failure. Objective scores, higher is better: density 0.77, daylight 0.56, privacy 0.70, circulation 0.66, carbon 0.71, cost 0.26.
B0013 · heuristic_nsga2 · seed 0scale 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 78 square metres. Dwelling U2 (1BR) has 5 rooms totalling 48 square metres. Dwelling U3 (1BR) has 5 rooms totalling 78 square metres. Dwelling U4 (2BR) has 6 rooms totalling 83 square metres. Building footprint 177 square metres; open space 317 square metres. This design is infeasible; failing categories: open space failure. Objective scores, higher is better: density 0.77, daylight 0.56, privacy 0.70, circulation 0.66, carbon 0.71, cost 0.26.

Objective vector

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

density
0.768
daylight
0.557
privacy
0.696
circulation
0.662
carbon
0.711
cost
0.258

Reported quantities

FAR proxy (GFA / lot)
0.73
site utilisation
0.849
gross floor area, m²
354.9
footprint, m²
177.5
carbon proxy, kgCO₂e/m² (A1–A3)
364
cost index / m² (unitless)
2.90
worst habitable room, daylight
0.150
circulation share of GFA
16%
open space, net of parking
63%
courtyard void, m²
36.3
plumbing stacks
6
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 narrowest extent 2.5 m
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U0studio34.24
U11BR78.25
U21BR48.35
U31BR78.25
U42BR82.56
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared016.813.40 × 1.25
CORE@1shared circulationshared116.813.40 × 1.25
U2@0#2kitchenU207.02.60 × 2.70
U2@0#3bathroomU205.01.85 × 2.70
U2@0#0entryU203.51.30 × 2.70
U2@0#1livingU2017.35.75 × 3.00
U2@0#4bedroom primaryU2015.55.75 × 2.70
U0@0#2kitchenU008.72.90 × 3.00
U0@0#3bathroomU004.71.55 × 3.00
U0@0#0entryU003.91.30 × 3.00
U0@0#1livingU0017.05.75 × 2.95
U4@1#2kitchenU416.62.20 × 3.00
U4@1#3bathroomU415.41.80 × 3.00
U4@1#0entryU415.31.75 × 3.00
U4@1#1livingU4133.95.75 × 5.90
U4@1#4bedroom primaryU4116.12.95 × 5.45
U4@1#5bedroom secondaryU4115.32.80 × 5.45
U1@0#0entryU104.11.40 × 2.90
U1@0#3bathroomU104.91.70 × 2.90
U1@0#2kitchenU106.82.35 × 2.90
U1@0#1livingU1032.45.45 × 5.95
U1@0#4bedroom primaryU1030.05.45 × 5.50
U3@1#3bathroomU316.41.70 × 3.75
U3@1#0entryU315.11.35 × 3.75
U3@1#2kitchenU319.02.40 × 3.75
U3@1#1livingU3140.35.45 × 7.40
U3@1#4bedroom primaryU3117.45.45 × 3.20

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