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.

B0070 · best infeasible · seed 0

B0070-heuristic-0

HeuristicA · violates 1 of 17 benchmark constraints (5 violations). Brief B0070

Plan drawing of a rowhouse on a 25.5 by 27.5 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 107 square metres. Dwelling U1 (2BR) has 9 rooms totalling 121 square metres. Dwelling U2 (2BR) has 9 rooms totalling 121 square metres. Dwelling U3 (2BR) has 9 rooms totalling 101 square metres. Building footprint 225 square metres; open space 481 square metres. This design is infeasible; failing categories: bad proportion. Objective scores, higher is better: density 0.50, daylight 0.59, privacy 0.85, circulation 0.46, carbon 0.82, cost 0.36.
B0070 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a rowhouse on a 25.5 by 27.5 metre lot, 2 storeys, 4 dwellings, 36 rooms. Dwelling U0 (2BR) has 9 rooms totalling 107 square metres. Dwelling U1 (2BR) has 9 rooms totalling 121 square metres. Dwelling U2 (2BR) has 9 rooms totalling 121 square metres. Dwelling U3 (2BR) has 9 rooms totalling 101 square metres. Building footprint 225 square metres; open space 481 square metres. This design is infeasible; failing categories: bad proportion. Objective scores, higher is better: density 0.50, daylight 0.59, privacy 0.85, circulation 0.46, carbon 0.82, cost 0.36.

Objective vector

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

density
0.503
daylight
0.594
privacy
0.852
circulation
0.463
carbon
0.824
cost
0.360

Reported quantities

FAR proxy (GFA / lot)
0.64
site utilisation
0.677
gross floor area, m²
449.4
footprint, m²
224.7
carbon proxy, kgCO₂e/m² (A1–A3)
323
cost index / m² (unitless)
2.74
worst habitable room, daylight
0.219
circulation share of GFA
39%
open space, net of parking
68%
courtyard void, m²
0.0
plumbing stacks
10
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 failedentry clear dim 1.15 < 1.20 mkitchen clear dim 1.75 < 1.80 mentry clear dim 1.15 < 1.20 m…and 2 more
  • 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
U02BR107.09
U12BR120.99
U22BR120.99
U32BR100.69
All 36 rooms
RoomTypeDwellingStoreyw × h m
STAIR:U0@0circulationU0015.55.00 × 3.10
STAIR:U0@1circulationU0115.55.00 × 3.10
U0@0#2kitchenU005.62.00 × 2.80
U0@0#3bathroomU004.21.50 × 2.80
U0@0#0entryU004.21.50 × 2.80
U0@0#1livingU0024.05.00 × 4.80
U0@1#5bedroom primaryU0115.92.70 × 5.90
U0@1#6bedroom secondaryU0113.62.30 × 5.90
U0@1#7bathroomU018.55.00 × 1.70
STAIR:U1@0circulationU1022.05.65 × 3.90
STAIR:U1@1circulationU1122.05.65 × 3.90
U1@0#0entryU105.31.15 × 4.60
U1@0#1livingU1012.72.75 × 4.60
U1@0#2kitchenU108.11.75 × 4.60
U1@0#3bathroomU1012.45.65 × 2.20
U1@1#5bedroom primaryU1114.73.00 × 4.90
U1@1#6bedroom secondaryU1113.02.65 × 4.90
U1@1#7bathroomU1110.75.65 × 1.90
STAIR:U2@0circulationU2022.05.65 × 3.90
STAIR:U2@1circulationU2122.05.65 × 3.90
U2@0#0entryU205.31.15 × 4.60
U2@0#1livingU2012.22.65 × 4.60
U2@0#2kitchenU208.51.85 × 4.60
U2@0#3bathroomU2012.45.65 × 2.20
U2@1#5bedroom primaryU2114.73.00 × 4.90
U2@1#6bedroom secondaryU2113.02.65 × 4.90
U2@1#7bathroomU2110.75.65 × 1.90
STAIR:U3@0circulationU3018.34.70 × 3.90
STAIR:U3@1circulationU3118.34.70 × 3.90
U3@0#0entryU303.51.20 × 2.90
U3@0#3bathroomU304.51.55 × 2.90
U3@0#2kitchenU305.71.95 × 2.90
U3@0#1livingU3018.34.70 × 3.90
U3@1#5bedroom primaryU3113.02.50 × 5.20
U3@1#6bedroom secondaryU3111.42.20 × 5.20
U3@1#7bathroomU317.54.70 × 1.60

Side by side