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.

B0025 · best infeasible · seed 1

B0025-nsga2-1-1360

NSGA-IID · violates 1 of 17 benchmark constraints (2 violations). Brief B0025

Plan drawing of a courtyard on a 19.3 by 26.8 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 33 square metres. Dwelling U1 (1BR) has 5 rooms totalling 51 square metres. Dwelling U2 (1BR) has 5 rooms totalling 61 square metres. Dwelling U3 (1BR) has 5 rooms totalling 61 square metres. Dwelling U4 (2BR) has 6 rooms totalling 85 square metres. Building footprint 171 square metres; open space 359 square metres. This design is infeasible; failing categories: bad proportion. Objective scores, higher is better: density 0.54, daylight 0.62, privacy 0.75, circulation 0.60, carbon 0.71, cost 0.09.
B0025 · nsga2 · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 19.3 by 26.8 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 33 square metres. Dwelling U1 (1BR) has 5 rooms totalling 51 square metres. Dwelling U2 (1BR) has 5 rooms totalling 61 square metres. Dwelling U3 (1BR) has 5 rooms totalling 61 square metres. Dwelling U4 (2BR) has 6 rooms totalling 85 square metres. Building footprint 171 square metres; open space 359 square metres. This design is infeasible; failing categories: bad proportion. Objective scores, higher is better: density 0.54, daylight 0.62, privacy 0.75, circulation 0.60, carbon 0.71, cost 0.09.

Objective vector

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

density
0.540
daylight
0.622
privacy
0.748
circulation
0.597
carbon
0.707
cost
0.085

Reported quantities

FAR proxy (GFA / lot)
0.66
site utilisation
0.701
gross floor area, m²
341.3
footprint, m²
170.7
carbon proxy, kgCO₂e/m² (A1–A3)
366
cost index / m² (unitless)
3.17
worst habitable room, daylight
0.208
circulation share of GFA
21%
open space, net of parking
67%
courtyard void, m²
42.0
plumbing stacks
9
footprint corners
8
preferred adjacencies met
50%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedbathroom clear dim 1.45 < 1.50 mkitchen clear dim 1.55 < 1.80 m
  • 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
U0studio33.14
U11BR51.55
U21BR61.15
U31BR61.15
U42BR84.66
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared025.015.60 × 1.60
CORE@1shared circulationshared125.015.60 × 1.60
U1@0#0entryU104.33.05 × 1.40
U1@0#1livingU1017.53.05 × 5.75
U1@0#2kitchenU1010.24.15 × 2.45
U1@0#3bathroomU106.04.15 × 1.45
U1@0#4bedroom primaryU1013.54.15 × 3.25
U0@0#1livingU0017.93.90 × 4.60
U0@0#0entryU003.11.40 × 2.20
U0@0#3bathroomU004.21.90 × 2.20
U0@0#2kitchenU007.93.30 × 2.40
U4@1#3bathroomU418.02.05 × 3.90
U4@1#0entryU416.21.60 × 3.90
U4@1#2kitchenU4115.03.65 × 4.10
U4@1#5bedroom secondaryU4113.73.65 × 3.75
U4@1#1livingU4122.53.55 × 6.35
U4@1#4bedroom primaryU4119.23.55 × 5.40
U2@0#1livingU2021.93.65 × 6.00
U2@0#4bedroom primaryU2021.03.65 × 5.75
U2@0#2kitchenU205.81.55 × 3.75
U2@0#0entryU205.21.55 × 3.35
U2@0#3bathroomU207.21.55 × 4.65
U3@1#0entryU314.61.90 × 2.40
U3@1#3bathroomU317.21.90 × 3.80
U3@1#2kitchenU3110.51.90 × 5.55
U3@1#1livingU3127.73.30 × 8.40
U3@1#4bedroom primaryU3111.13.30 × 3.35

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