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.

B0010 · best infeasible · seed 0

B0010-heuristic_nsga2-0-915

Heuristic-seeded NSGA-IIA+D · violates 1 of 17 benchmark constraints (2 violations). Brief B0010

Plan drawing of a rowhouse on a 24.4 by 28.2 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 120 square metres. Dwelling U1 (2BR) has 9 rooms totalling 114 square metres. Dwelling U2 (2BR) has 9 rooms totalling 121 square metres. Dwelling U3 (2BR) has 9 rooms totalling 118 square metres. Building footprint 236 square metres; open space 450 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.63, daylight 0.50, privacy 0.86, circulation 0.46, carbon 0.84, cost 0.45.
B0010 · heuristic_nsga2 · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a rowhouse on a 24.4 by 28.2 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 120 square metres. Dwelling U1 (2BR) has 9 rooms totalling 114 square metres. Dwelling U2 (2BR) has 9 rooms totalling 121 square metres. Dwelling U3 (2BR) has 9 rooms totalling 118 square metres. Building footprint 236 square metres; open space 450 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.63, daylight 0.50, privacy 0.86, circulation 0.46, carbon 0.84, cost 0.45.

Objective vector

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

density
0.633
daylight
0.502
privacy
0.858
circulation
0.461
carbon
0.838
cost
0.445

Reported quantities

FAR proxy (GFA / lot)
0.69
site utilisation
0.761
gross floor area, m²
473.0
footprint, m²
236.5
carbon proxy, kgCO₂e/m² (A1–A3)
318
cost index / m² (unitless)
2.61
worst habitable room, daylight
0.250
circulation share of GFA
34%
open space, net of parking
66%
courtyard void, m²
0.0
plumbing stacks
9
footprint corners
4
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 passed
  • C06max room aspect passed
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access failedentry not reachable from the streetentry not reachable from the street
  • 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
U02BR120.09
U12BR114.29
U22BR121.29
U32BR117.79
All 36 rooms
RoomTypeDwellingStoreyw × h m
STAIR:U0@0circulationU0015.75.15 × 3.05
STAIR:U0@1circulationU0115.75.15 × 3.05
U0@0#2kitchenU005.72.15 × 2.65
U0@0#3bathroomU004.01.50 × 2.65
U0@0#0entryU004.01.50 × 2.65
U0@0#1livingU0030.65.15 × 5.95
U0@1#5bedroom primaryU0115.22.95 × 5.15
U0@1#6bedroom secondaryU0111.32.20 × 5.15
U0@1#7bathroomU0117.85.15 × 3.45
STAIR:U1@0circulationU1014.94.90 × 3.05
STAIR:U1@1circulationU1114.94.90 × 3.05
U1@0#2kitchenU106.72.05 × 3.25
U1@0#0entryU103.02.05 × 1.45
U1@0#1livingU1013.42.85 × 4.70
U1@0#3bathroomU1019.14.90 × 3.90
U1@1#6bedroom secondaryU1112.52.20 × 5.70
U1@1#5bedroom primaryU1115.42.70 × 5.70
U1@1#7bathroomU1114.24.90 × 2.90
STAIR:U2@0circulationU2026.85.20 × 5.15
STAIR:U2@1circulationU2126.85.20 × 5.15
U2@0#2kitchenU206.42.05 × 3.10
U2@0#0entryU203.52.05 × 1.70
U2@0#3bathroomU203.52.05 × 1.70
U2@0#1livingU2020.53.15 × 6.50
U2@1#5bedroom primaryU2112.93.00 × 4.30
U2@1#6bedroom secondaryU219.52.20 × 4.30
U2@1#7bathroomU2111.45.20 × 2.20
STAIR:U3@0circulationU3016.75.05 × 3.30
STAIR:U3@1circulationU3116.75.05 × 3.30
U3@0#0entryU303.11.20 × 2.55
U3@0#3bathroomU304.11.60 × 2.55
U3@0#2kitchenU305.72.25 × 2.55
U3@0#1livingU3029.35.05 × 5.80
U3@1#7bathroomU319.31.85 × 5.05
U3@1#5bedroom primaryU3116.23.20 × 5.05
U3@1#6bedroom secondaryU3116.75.05 × 3.30

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