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.

B0025 · best infeasible · seed 0

B0025-anneal-0-336

Simulated annealingC · violates 3 of 17 benchmark constraints (3 violations). Brief B0025

Plan drawing of a courtyard on a 19.3 by 26.8 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 35 square metres. Dwelling U1 (1BR) has 5 rooms totalling 50 square metres. Dwelling U2 (1BR) has 5 rooms totalling 92 square metres. Dwelling U3 (1BR) has 5 rooms totalling 92 square metres. Dwelling U4 (2BR) has 6 rooms totalling 85 square metres. Building footprint 197 square metres; open space 334 square metres. This design is infeasible; failing categories: bad proportion, no street access, open space failure. Objective scores, higher is better: density 0.71, daylight 0.55, privacy 0.80, circulation 0.63, carbon 0.75, cost 0.24.
B0025 · anneal · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 19.3 by 26.8 metre lot, 2 storeys, 5 dwellings, 27 rooms. Dwelling U0 (studio) has 4 rooms totalling 35 square metres. Dwelling U1 (1BR) has 5 rooms totalling 50 square metres. Dwelling U2 (1BR) has 5 rooms totalling 92 square metres. Dwelling U3 (1BR) has 5 rooms totalling 92 square metres. Dwelling U4 (2BR) has 6 rooms totalling 85 square metres. Building footprint 197 square metres; open space 334 square metres. This design is infeasible; failing categories: bad proportion, no street access, open space failure. Objective scores, higher is better: density 0.71, daylight 0.55, privacy 0.80, circulation 0.63, carbon 0.75, cost 0.24.

Objective vector

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

density
0.710
daylight
0.547
privacy
0.799
circulation
0.633
carbon
0.750
cost
0.243

Reported quantities

FAR proxy (GFA / lot)
0.76
site utilisation
0.811
gross floor area, m²
394.9
footprint, m²
197.4
carbon proxy, kgCO₂e/m² (A1–A3)
350
cost index / m² (unitless)
2.92
worst habitable room, daylight
0.164
circulation share of GFA
19%
open space, net of parking
62%
courtyard void, m²
25.0
plumbing stacks
9
footprint corners
8
preferred adjacencies met
75%

Benchmark constraints

Benchmark rules, not building code.

  • C01geometry valid passed
  • C02no overlap passed
  • C03within buildable passed
  • C04min room area passed
  • C05min room dimension failedbathroom clear dim 1.45 < 1.50 m
  • C06max room aspect passed
  • C07min unit area passed
  • C08unit connectivity passed
  • C09street access failedentry not reachable from the street
  • C10habitable daylight passed
  • C11required adjacency passed
  • C12forbidden door passed
  • C13open space passed
  • C14courtyard provision failedcourtyard narrowest extent 2.0 m
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U0studio35.24
U11BR49.95
U21BR92.15
U31BR92.15
U42BR85.16
All 27 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared020.315.60 × 1.30
CORE@1shared circulationshared120.315.60 × 1.30
U1@0#0entryU104.72.75 × 1.70
U1@0#1livingU1015.82.75 × 5.75
U1@0#2kitchenU1011.53.95 × 2.90
U1@0#3bathroomU105.93.95 × 1.50
U1@0#4bedroom primaryU1012.03.95 × 3.05
U0@0#2kitchenU006.12.65 × 2.30
U0@0#0entryU004.02.65 × 1.50
U0@0#3bathroomU003.82.65 × 1.45
U0@0#1livingU0021.34.05 × 5.25
U4@1#5bedroom secondaryU4118.52.70 × 6.85
U4@1#2kitchenU419.62.70 × 3.55
U4@1#3bathroomU416.22.70 × 2.30
U4@1#1livingU4131.84.00 × 7.95
U4@1#0entryU415.64.00 × 1.40
U4@1#4bedroom primaryU4113.44.00 × 3.35
U2@0#3bathroomU2012.94.30 × 3.00
U2@0#2kitchenU2041.74.30 × 9.70
U2@0#1livingU2017.72.95 × 6.00
U2@0#0entryU206.52.95 × 2.20
U2@0#4bedroom primaryU2013.32.95 × 4.50
U3@1#0entryU3112.44.05 × 3.05
U3@1#1livingU3139.14.05 × 9.65
U3@1#2kitchenU3123.23.20 × 7.25
U3@1#3bathroomU315.03.20 × 1.55
U3@1#4bedroom primaryU3112.53.20 × 3.90

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