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.

B0048 · best infeasible · seed 1

B0048-heuristic_nsga2-1-448

Heuristic-seeded NSGA-IIA+D · violates 2 of 17 benchmark constraints (3 violations). Brief B0048

Plan drawing of a adu pair on a 14.2 by 18.4 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 77 square metres. Dwelling U1 (studio) has 4 rooms totalling 77 square metres. Building footprint 90 square metres; open space 170 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.97, daylight 0.41, privacy 0.81, circulation 0.64, carbon 0.73, cost 0.41.
B0048 · heuristic_nsga2 · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a adu pair on a 14.2 by 18.4 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 77 square metres. Dwelling U1 (studio) has 4 rooms totalling 77 square metres. Building footprint 90 square metres; open space 170 square metres. This design is infeasible; failing categories: bad proportion, insufficient area. Objective scores, higher is better: density 0.97, daylight 0.41, privacy 0.81, circulation 0.64, carbon 0.73, cost 0.41.

Objective vector

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

density
0.972
daylight
0.409
privacy
0.811
circulation
0.642
carbon
0.733
cost
0.409

Reported quantities

FAR proxy (GFA / lot)
0.69
site utilisation
0.982
gross floor area, m²
180.9
footprint, m²
90.5
carbon proxy, kgCO₂e/m² (A1–A3)
356
cost index / m² (unitless)
2.67
worst habitable room, daylight
0.094
circulation share of GFA
17%
open space, net of parking
65%
courtyard void, m²
0.0
plumbing stacks
2
footprint corners
4
preferred adjacencies met
33%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedkitchen clear dim 1.75 < 1.80 mliving clear dim 2.65 < 2.70 m
  • C06max room aspect passed
  • C07min unit area failed3BR 77.4 < 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
U03BR77.48
U1studio77.44
All 14 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared013.110.90 × 1.20
CORE@1shared circulationshared113.110.90 × 1.20
U0@0#4bathroomU008.14.60 × 1.75
U0@0#0entryU002.61.50 × 1.75
U0@0#3kitchenU008.44.80 × 1.75
U0@0#2diningU0013.55.10 × 2.65
U0@0#1livingU0015.45.80 × 2.65
U0@0#6bedroom secondaryU007.62.80 × 2.70
U0@0#7bedroom secondaryU0010.73.95 × 2.70
U0@0#5bedroom primaryU0011.24.15 × 2.70
U1@1#2kitchenU1114.26.45 × 2.20
U1@1#3bathroomU117.23.25 × 2.20
U1@1#0entryU112.61.20 × 2.20
U1@1#1livingU1153.410.90 × 4.90

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