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.

B0043 · best infeasible · seed 2

B0043-sketch-2-1134

Random sketch + repairF′ · violates 2 of 17 benchmark constraints (3 violations). Brief B0043

Plan drawing of a courtyard on a 19.9 by 25.6 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 73 square metres. Dwelling U1 (2BR) has 6 rooms totalling 98 square metres. Dwelling U2 (2BR) has 6 rooms totalling 73 square metres. Dwelling U3 (2BR) has 6 rooms totalling 98 square metres. Building footprint 190 square metres; open space 326 square metres. This design is infeasible; failing categories: bad proportion, open space failure. Objective scores, higher is better: density 0.71, daylight 0.47, privacy 0.72, circulation 0.68, carbon 0.74, cost 0.42.
B0043 · sketch · seed 2scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 19.9 by 25.6 metre lot, 2 storeys, 4 dwellings, 25 rooms. Dwelling U0 (1BR) has 5 rooms totalling 73 square metres. Dwelling U1 (2BR) has 6 rooms totalling 98 square metres. Dwelling U2 (2BR) has 6 rooms totalling 73 square metres. Dwelling U3 (2BR) has 6 rooms totalling 98 square metres. Building footprint 190 square metres; open space 326 square metres. This design is infeasible; failing categories: bad proportion, open space failure. Objective scores, higher is better: density 0.71, daylight 0.47, privacy 0.72, circulation 0.68, carbon 0.74, cost 0.42.

Objective vector

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

density
0.711
daylight
0.470
privacy
0.724
circulation
0.677
carbon
0.741
cost
0.421

Reported quantities

FAR proxy (GFA / lot)
0.74
site utilisation
0.812
gross floor area, m²
379.2
footprint, m²
189.6
carbon proxy, kgCO₂e/m² (A1–A3)
353
cost index / m² (unitless)
2.65
worst habitable room, daylight
0.179
circulation share of GFA
16%
open space, net of parking
63%
courtyard void, m²
32.5
plumbing stacks
5
footprint corners
8
preferred adjacencies met
0%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedshared_circulation clear dim 1.15 < 1.20 mshared_circulation clear dim 1.15 < 1.20 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 failedcourtyard 32.5 < 34.3 m^2
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U01BR73.25
U12BR98.46
U22BR73.26
U32BR98.46
All 25 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared018.015.65 × 1.15
CORE@1shared circulationshared118.015.65 × 1.15
U1@0#4bedroom primaryU1011.64.30 × 2.70
U1@0#1livingU1029.04.30 × 6.75
U1@0#0entryU105.64.30 × 1.30
U1@0#3bathroomU109.54.30 × 2.20
U1@0#5bedroom secondaryU1017.03.30 × 5.15
U1@0#2kitchenU1025.73.30 × 7.80
U3@1#5bedroom secondaryU3112.63.00 × 4.20
U3@1#0entryU315.01.20 × 4.20
U3@1#2kitchenU3136.84.20 × 8.75
U3@1#3bathroomU318.53.40 × 2.50
U3@1#1livingU3117.03.40 × 5.00
U3@1#4bedroom primaryU3118.53.40 × 5.45
U0@0#4bedroom primaryU0030.25.65 × 5.35
U0@0#1livingU0024.65.65 × 4.35
U0@0#3bathroomU006.82.10 × 3.25
U0@0#0entryU004.11.25 × 3.25
U0@0#2kitchenU007.52.30 × 3.25
U2@1#0entryU218.25.65 × 1.45
U2@1#1livingU2112.42.95 × 4.20
U2@1#4bedroom primaryU2111.32.70 × 4.20
U2@1#2kitchenU2111.05.65 × 1.95
U2@1#5bedroom secondaryU2113.65.65 × 2.40
U2@1#3bathroomU2116.75.65 × 2.95

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