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.

B0039 · best infeasible · seed 0

B0039-nsga2-0-508

NSGA-IID · violates 1 of 17 benchmark constraints (1 violations). Brief B0039

Plan drawing of a fourplex on a 12.7 by 31.9 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 86 square metres. Dwelling U1 (1BR) has 5 rooms totalling 62 square metres. Dwelling U2 (2BR) has 6 rooms totalling 81 square metres. Dwelling U3 (2BR) has 6 rooms totalling 67 square metres. Building footprint 161 square metres; open space 238 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.67, daylight 0.43, privacy 0.84, circulation 0.68, carbon 0.80, cost 0.34.
B0039 · nsga2 · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a fourplex on a 12.7 by 31.9 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 86 square metres. Dwelling U1 (1BR) has 5 rooms totalling 62 square metres. Dwelling U2 (2BR) has 6 rooms totalling 81 square metres. Dwelling U3 (2BR) has 6 rooms totalling 67 square metres. Building footprint 161 square metres; open space 238 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.67, daylight 0.43, privacy 0.84, circulation 0.68, carbon 0.80, cost 0.34.

Objective vector

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

density
0.670
daylight
0.433
privacy
0.842
circulation
0.679
carbon
0.803
cost
0.336

Reported quantities

FAR proxy (GFA / lot)
0.80
site utilisation
0.786
gross floor area, m²
322.1
footprint, m²
161.1
carbon proxy, kgCO₂e/m² (A1–A3)
331
cost index / m² (unitless)
2.78
worst habitable room, daylight
0.162
circulation share of GFA
14%
open space, net of parking
52%
courtyard void, m²
0.0
plumbing stacks
7
footprint corners
4
preferred adjacencies met
75%

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 failedentry not reachable from the street
  • 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
U01BR86.55
U11BR61.95
U22BR81.46
U32BR66.96
All 24 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared012.79.10 × 1.40
CORE@1shared circulationshared112.79.10 × 1.40
U0@0#2kitchenU0013.73.75 × 3.65
U0@0#1livingU0021.93.75 × 5.85
U0@0#4bedroom primaryU0033.25.35 × 6.20
U0@0#0entryU005.61.70 × 3.30
U0@0#3bathroomU0012.03.65 × 3.30
U1@0#2kitchenU1015.93.15 × 5.05
U1@0#3bathroomU105.53.15 × 1.75
U1@0#0entryU105.41.60 × 3.35
U1@0#4bedroom primaryU1014.64.35 × 3.35
U1@0#1livingU1020.55.95 × 3.45
U2@1#4bedroom primaryU2119.85.20 × 3.80
U2@1#3bathroomU216.11.60 × 3.80
U2@1#1livingU2135.06.80 × 5.15
U2@1#5bedroom secondaryU218.92.30 × 3.85
U2@1#0entryU213.02.30 × 1.30
U2@1#2kitchenU218.72.30 × 3.80
U3@1#5bedroom secondaryU3112.35.45 × 2.25
U3@1#2kitchenU3110.95.45 × 2.00
U3@1#1livingU3116.95.45 × 3.10
U3@1#4bedroom primaryU3114.43.65 × 3.95
U3@1#3bathroomU317.53.65 × 2.05
U3@1#0entryU314.93.65 × 1.35

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