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.

B0041 · daylight-optimal · seed 1

B0041-nsga2-1-1364

NSGA-IID · meets all 17 benchmark constraints. Brief B0041

Plan drawing of a triplex on a 15.9 by 25.9 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 63 square metres. Dwelling U1 (2BR) has 6 rooms totalling 73 square metres. Dwelling U2 (2BR) has 6 rooms totalling 136 square metres. Building footprint 148 square metres; open space 264 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.47, daylight 0.48, privacy 0.80, circulation 0.67, carbon 0.81, cost 0.58.
B0041 · nsga2 · seed 1scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a triplex on a 15.9 by 25.9 metre lot, 2 storeys, 3 dwellings, 20 rooms. Dwelling U0 (2BR) has 6 rooms totalling 63 square metres. Dwelling U1 (2BR) has 6 rooms totalling 73 square metres. Dwelling U2 (2BR) has 6 rooms totalling 136 square metres. Building footprint 148 square metres; open space 264 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.47, daylight 0.48, privacy 0.80, circulation 0.67, carbon 0.81, cost 0.58.

Objective vector

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

density
0.471
daylight
0.483
privacy
0.796
circulation
0.668
carbon
0.814
cost
0.579

Reported quantities

FAR proxy (GFA / lot)
0.72
site utilisation
0.656
gross floor area, m²
296.7
footprint, m²
148.3
carbon proxy, kgCO₂e/m² (A1–A3)
327
cost index / m² (unitless)
2.40
worst habitable room, daylight
0.324
circulation share of GFA
15%
open space, net of parking
64%
courtyard void, m²
0.0
plumbing stacks
3
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 passed
  • 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
U02BR63.26
U12BR73.06
U22BR136.26
All 20 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared012.19.30 × 1.30
CORE@1shared circulationshared112.19.30 × 1.30
U0@0#0entryU004.33.30 × 1.30
U0@0#2kitchenU008.43.30 × 2.55
U0@0#5bedroom secondaryU009.73.30 × 2.95
U0@0#1livingU0023.76.00 × 3.95
U0@0#4bedroom primaryU0012.04.20 × 2.85
U0@0#3bathroomU005.11.80 × 2.85
U1@0#4bedroom primaryU1026.06.20 × 4.20
U1@0#1livingU1022.66.20 × 3.65
U1@0#5bedroom secondaryU109.03.10 × 2.90
U1@0#3bathroomU105.13.10 × 1.65
U1@0#0entryU103.73.10 × 1.20
U1@0#2kitchenU106.53.10 × 2.10
U2@1#4bedroom primaryU2111.82.80 × 4.20
U2@1#0entryU2113.43.20 × 4.20
U2@1#1livingU2162.76.00 × 10.45
U2@1#3bathroomU2121.43.30 × 6.50
U2@1#5bedroom secondaryU2117.33.30 × 5.25
U2@1#2kitchenU219.63.30 × 2.90

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