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.

B0019 · best infeasible · seed 0

B0019-anneal-0-747

Simulated annealingC · violates 2 of 17 benchmark constraints (3 violations). Brief B0019

Plan drawing of a courtyard on a 21.7 by 27.8 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 87 square metres. Dwelling U1 (1BR) has 5 rooms totalling 114 square metres. Dwelling U2 (2BR) has 6 rooms totalling 114 square metres. Dwelling U3 (2BR) has 6 rooms totalling 87 square metres. Building footprint 231 square metres; open space 365 square metres. This design is infeasible; failing categories: bad proportion, no street access. Objective scores, higher is better: density 0.66, daylight 0.53, privacy 0.75, circulation 0.60, carbon 0.79, cost 0.60.
B0019 · anneal · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a courtyard on a 21.7 by 27.8 metre lot, 2 storeys, 4 dwellings, 24 rooms. Dwelling U0 (1BR) has 5 rooms totalling 87 square metres. Dwelling U1 (1BR) has 5 rooms totalling 114 square metres. Dwelling U2 (2BR) has 6 rooms totalling 114 square metres. Dwelling U3 (2BR) has 6 rooms totalling 87 square metres. Building footprint 231 square metres; open space 365 square metres. This design is infeasible; failing categories: bad proportion, no street access. Objective scores, higher is better: density 0.66, daylight 0.53, privacy 0.75, circulation 0.60, carbon 0.79, cost 0.60.

Objective vector

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

density
0.663
daylight
0.528
privacy
0.748
circulation
0.603
carbon
0.788
cost
0.602

Reported quantities

FAR proxy (GFA / lot)
0.76
site utilisation
0.781
gross floor area, m²
461.2
footprint, m²
230.6
carbon proxy, kgCO₂e/m² (A1–A3)
336
cost index / m² (unitless)
2.37
worst habitable room, daylight
0.179
circulation share of GFA
19%
open space, net of parking
62%
courtyard void, m²
42.0
plumbing stacks
4
footprint corners
8
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 failedkitchen aspect 3.06 > 3.00bedroom_primary aspect 2.42 > 2.40
  • 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 passed
  • C15programme complete passed
  • C16unit contiguity passed
  • C17vertical support passed

Dwellings and rooms

DwellingTypeArea m²Rooms
U01BR87.05
U11BR114.45
U22BR114.46
U32BR87.06
All 24 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared029.217.70 × 1.65
CORE@1shared circulationshared129.217.70 × 1.65
U1@0#4bedroom primaryU1012.53.20 × 3.90
U1@0#2kitchenU1031.43.20 × 9.80
U1@0#3bathroomU1041.55.15 × 8.05
U1@0#0entryU107.25.15 × 1.40
U1@0#1livingU1021.95.15 × 4.25
U2@1#5bedroom secondaryU219.64.35 × 2.20
U2@1#3bathroomU215.52.50 × 2.20
U2@1#0entryU213.31.50 × 2.20
U2@1#1livingU2141.88.35 × 5.00
U2@1#2kitchenU2125.58.35 × 3.05
U2@1#4bedroom primaryU2128.88.35 × 3.45
U0@0#2kitchenU008.52.15 × 3.95
U0@0#3bathroomU006.32.15 × 2.95
U0@0#1livingU0029.04.20 × 6.90
U0@0#4bedroom primaryU0031.64.65 × 6.80
U0@0#0entryU0011.61.70 × 6.80
U3@1#5bedroom secondaryU3113.62.90 × 4.70
U3@1#2kitchenU3113.82.90 × 4.75
U3@1#3bathroomU315.72.90 × 1.95
U3@1#0entryU316.72.90 × 2.30
U3@1#4bedroom primaryU3119.53.45 × 5.65
U3@1#1livingU3127.83.45 × 8.05

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