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.

B0024 · best infeasible · seed 1

B0024-heuristic_nsga2-1-249

Heuristic-seeded NSGA-IIA+D · violates 1 of 17 benchmark constraints (1 violations). Brief B0024

Plan drawing of a adu pair on a 11.7 by 21.2 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 75 square metres. Dwelling U1 (studio) has 4 rooms totalling 75 square metres. Building footprint 85 square metres; open space 156 square metres. This design is infeasible; failing categories: insufficient area. Objective scores, higher is better: density 0.95, daylight 0.36, privacy 0.82, circulation 0.68, carbon 0.74, cost 0.48.
B0024 · heuristic_nsga2 · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a adu pair on a 11.7 by 21.2 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 75 square metres. Dwelling U1 (studio) has 4 rooms totalling 75 square metres. Building footprint 85 square metres; open space 156 square metres. This design is infeasible; failing categories: insufficient area. Objective scores, higher is better: density 0.95, daylight 0.36, privacy 0.82, circulation 0.68, carbon 0.74, cost 0.48.

Objective vector

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

density
0.946
daylight
0.356
privacy
0.820
circulation
0.684
carbon
0.738
cost
0.483

Reported quantities

FAR proxy (GFA / lot)
0.68
site utilisation
0.965
gross floor area, m²
169.3
footprint, m²
84.7
carbon proxy, kgCO₂e/m² (A1–A3)
354
cost index / m² (unitless)
2.55
worst habitable room, daylight
0.117
circulation share of GFA
14%
open space, net of parking
59%
courtyard void, m²
0.0
plumbing stacks
1
footprint corners
4
preferred adjacencies met
67%

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 failed3BR 74.7 < 84.0 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
U03BR74.78
U1studio74.74
All 14 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.08.30 × 1.20
CORE@1shared circulationshared110.08.30 × 1.20
U0@0#4bathroomU004.42.40 × 1.85
U0@0#0entryU002.31.25 × 1.85
U0@0#3kitchenU008.64.65 × 1.85
U0@0#1livingU0017.45.90 × 2.95
U0@0#2diningU007.12.40 × 2.95
U0@0#5bedroom primaryU0012.42.95 × 4.20
U0@0#6bedroom secondaryU009.92.35 × 4.20
U0@0#7bedroom secondaryU0012.63.00 × 4.20
U1@1#2kitchenU119.55.15 × 1.85
U1@1#3bathroomU113.51.90 × 1.85
U1@1#0entryU112.31.25 × 1.85
U1@1#1livingU1159.38.30 × 7.15

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