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.

B0040 · best infeasible · seed 0

B0040-heuristic-0

HeuristicA · violates 2 of 17 benchmark constraints (7 violations). Brief B0040

Plan drawing of a rowhouse on a 20.7 by 22.5 metre lot, 2 storeys, 3 dwellings, 29 rooms. Dwelling U0 (2BR) has 9 rooms totalling 104 square metres. Dwelling U1 (3BR) has 11 rooms totalling 163 square metres. Dwelling U2 (2BR) has 9 rooms totalling 100 square metres. Building footprint 184 square metres; open space 280 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion. Objective scores, higher is better: density 0.82, daylight 0.42, privacy 0.86, circulation 0.45, carbon 0.82, cost 0.42.
B0040 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a rowhouse on a 20.7 by 22.5 metre lot, 2 storeys, 3 dwellings, 29 rooms. Dwelling U0 (2BR) has 9 rooms totalling 104 square metres. Dwelling U1 (3BR) has 11 rooms totalling 163 square metres. Dwelling U2 (2BR) has 9 rooms totalling 100 square metres. Building footprint 184 square metres; open space 280 square metres. This design is infeasible; failing categories: adjacency violation, bad proportion. Objective scores, higher is better: density 0.82, daylight 0.42, privacy 0.86, circulation 0.45, carbon 0.82, cost 0.42.

Objective vector

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

density
0.815
daylight
0.422
privacy
0.856
circulation
0.447
carbon
0.822
cost
0.420

Reported quantities

FAR proxy (GFA / lot)
0.79
site utilisation
0.880
gross floor area, m²
367.4
footprint, m²
183.7
carbon proxy, kgCO₂e/m² (A1–A3)
324
cost index / m² (unitless)
2.65
worst habitable room, daylight
0.219
circulation share of GFA
33%
open space, net of parking
61%
courtyard void, m²
0.0
plumbing stacks
7
footprint corners
4
preferred adjacencies met
63%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedbedroom_primary clear dim 2.65 < 2.70 mbedroom_secondary clear dim 2.10 < 2.20 mliving clear dim 2.45 < 2.70 m…and 3 more
  • C06max room aspect passed
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access passed
  • C10habitable daylight passed
  • C11required adjacency failedrequired adjacency kitchen-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
U02BR104.59
U13BR162.811
U22BR100.19
All 29 rooms
RoomTypeDwellingStoreyw × h m
STAIR:U0@0circulationU009.74.75 × 2.05
STAIR:U0@1circulationU019.74.75 × 2.05
U0@0#2kitchenU005.51.90 × 2.90
U0@0#3bathroomU004.31.50 × 2.90
U0@0#0entryU003.91.35 × 2.90
U0@0#1livingU0028.74.75 × 6.05
U0@1#5bedroom primaryU0111.42.65 × 4.30
U0@1#6bedroom secondaryU019.02.10 × 4.30
U0@1#7bathroomU0122.14.75 × 4.65
STAIR:U1@0circulationU1027.47.40 × 3.70
STAIR:U1@1circulationU1127.47.40 × 3.70
U1@0#0entryU105.71.20 × 4.75
U1@0#1livingU1011.62.45 × 4.75
U1@0#2diningU109.52.00 × 4.75
U1@0#3kitchenU108.31.75 × 4.75
U1@0#4bathroomU1018.97.40 × 2.55
U1@1#6bedroom primaryU1111.92.95 × 4.05
U1@1#7bedroom secondaryU118.92.20 × 4.05
U1@1#8bedroom secondaryU119.12.25 × 4.05
U1@1#9bathroomU1124.17.40 × 3.25
STAIR:U2@0circulationU2016.64.55 × 3.65
STAIR:U2@1circulationU2116.64.55 × 3.65
U2@0#0entryU203.71.20 × 3.05
U2@0#3bathroomU204.61.50 × 3.05
U2@0#2kitchenU205.61.85 × 3.05
U2@0#1livingU2019.64.55 × 4.30
U2@1#5bedroom primaryU2111.92.70 × 4.40
U2@1#6bedroom secondaryU218.11.85 × 4.40
U2@1#7bathroomU2113.44.55 × 2.95

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