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.

B0065 · best infeasible · seed 1

B0065-random-1-1336

Random searchB · violates 2 of 17 benchmark constraints (2 violations). Brief B0065

Plan drawing of a triplex on a 16.4 by 19.0 metre lot, 2 storeys, 3 dwellings, 17 rooms. Dwelling U0 (studio) has 4 rooms totalling 40 square metres. Dwelling U1 (1BR) has 5 rooms totalling 47 square metres. Dwelling U2 (2BR) has 6 rooms totalling 88 square metres. Building footprint 98 square metres; open space 220 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion. Objective scores, higher is better: density 0.69, daylight 0.70, privacy 0.81, circulation 0.62, carbon 0.73, cost 0.10.
B0065 · random · seed 1scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a triplex on a 16.4 by 19.0 metre lot, 2 storeys, 3 dwellings, 17 rooms. Dwelling U0 (studio) has 4 rooms totalling 40 square metres. Dwelling U1 (1BR) has 5 rooms totalling 47 square metres. Dwelling U2 (2BR) has 6 rooms totalling 88 square metres. Building footprint 98 square metres; open space 220 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion. Objective scores, higher is better: density 0.69, daylight 0.70, privacy 0.81, circulation 0.62, carbon 0.73, cost 0.10.

Objective vector

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

density
0.685
daylight
0.699
privacy
0.814
circulation
0.619
carbon
0.735
cost
0.103

Reported quantities

FAR proxy (GFA / lot)
0.63
site utilisation
0.795
gross floor area, m²
195.5
footprint, m²
97.7
carbon proxy, kgCO₂e/m² (A1–A3)
355
cost index / m² (unitless)
3.14
worst habitable room, daylight
0.228
circulation share of GFA
18%
open space, net of parking
69%
courtyard void, m²
0.0
plumbing stacks
5
footprint corners
4
preferred adjacencies met
100%

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 failedbathroom aspect 3.03 > 3.00
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency failedrequired adjacency entry-living absent
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision passed
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U0studio40.44
U11BR47.15
U22BR87.56
All 17 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.21.30 × 7.85
CORE@1shared circulationshared110.21.30 × 7.85
U1@0#0entryU104.12.80 × 1.45
U1@0#1livingU1017.92.80 × 6.40
U1@0#2kitchenU108.83.20 × 2.75
U1@0#4bedroom primaryU1011.53.20 × 3.60
U1@0#3bathroomU104.83.20 × 1.50
U0@0#1livingU0023.93.05 × 7.85
U0@0#2kitchenU006.12.10 × 2.90
U0@0#3bathroomU006.02.10 × 2.85
U0@0#0entryU004.42.10 × 2.10
U2@1#3bathroomU217.31.55 × 4.70
U2@1#4bedroom primaryU2125.45.40 × 4.70
U2@1#0entryU215.71.80 × 3.15
U2@1#5bedroom secondaryU2116.25.15 × 3.15
U2@1#1livingU2122.14.20 × 5.25
U2@1#2kitchenU2110.94.20 × 2.60

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