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.

B0021 · best infeasible · seed 0

B0021-anneal-0-313

Simulated annealingC · violates 1 of 17 benchmark constraints (1 violations). Brief B0021

Plan drawing of a fourplex on a 14.4 by 39.3 metre lot, 2 storeys, 4 dwellings, 26 rooms. Dwelling U0 (2BR) has 6 rooms totalling 85 square metres. Dwelling U1 (2BR) has 6 rooms totalling 89 square metres. Dwelling U2 (2BR) has 6 rooms totalling 98 square metres. Dwelling U3 (2BR) has 6 rooms totalling 76 square metres. Building footprint 205 square metres; open space 368 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.55, daylight 0.49, privacy 0.87, circulation 0.55, carbon 0.84, cost 0.65.
B0021 · anneal · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a fourplex on a 14.4 by 39.3 metre lot, 2 storeys, 4 dwellings, 26 rooms. Dwelling U0 (2BR) has 6 rooms totalling 85 square metres. Dwelling U1 (2BR) has 6 rooms totalling 89 square metres. Dwelling U2 (2BR) has 6 rooms totalling 98 square metres. Dwelling U3 (2BR) has 6 rooms totalling 76 square metres. Building footprint 205 square metres; open space 368 square metres. This design is infeasible; failing categories: no street access. Objective scores, higher is better: density 0.55, daylight 0.49, privacy 0.87, circulation 0.55, carbon 0.84, cost 0.65.

Objective vector

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

density
0.548
daylight
0.486
privacy
0.866
circulation
0.550
carbon
0.843
cost
0.645

Reported quantities

FAR proxy (GFA / lot)
0.73
site utilisation
0.706
gross floor area, m²
410.6
footprint, m²
205.3
carbon proxy, kgCO₂e/m² (A1–A3)
316
cost index / m² (unitless)
2.30
worst habitable room, daylight
0.251
circulation share of GFA
22%
open space, net of parking
61%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
100%

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 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
U02BR85.56
U12BR88.86
U22BR97.96
U32BR76.46
All 26 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared031.09.55 × 3.25
CORE@1shared circulationshared131.09.55 × 3.25
U1@0#5bedroom secondaryU1027.24.65 × 5.85
U1@0#2kitchenU1016.04.65 × 3.45
U1@0#3bathroomU106.51.65 × 3.95
U1@0#4bedroom primaryU1012.83.25 × 3.95
U1@0#1livingU1019.14.90 × 3.90
U1@0#0entryU107.14.90 × 1.45
U0@0#2kitchenU0022.34.60 × 4.85
U0@0#4bedroom primaryU0012.12.95 × 4.10
U0@0#3bathroomU006.81.65 × 4.10
U0@0#5bedroom secondaryU008.82.45 × 3.60
U0@0#0entryU009.02.50 × 3.60
U0@0#1livingU0026.54.95 × 5.35
U3@1#4bedroom primaryU3125.95.35 × 4.85
U3@1#5bedroom secondaryU3110.73.40 × 3.15
U3@1#3bathroomU316.11.95 × 3.15
U3@1#1livingU3124.84.20 × 5.90
U3@1#0entryU313.01.45 × 2.10
U3@1#2kitchenU315.82.75 × 2.10
U2@1#1livingU2124.63.20 × 7.70
U2@1#0entryU218.23.20 × 2.55
U2@1#2kitchenU2114.23.05 × 4.65
U2@1#5bedroom secondaryU2115.33.30 × 4.65
U2@1#4bedroom primaryU2121.66.35 × 3.40
U2@1#3bathroomU2114.06.35 × 2.20

Side by side