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.

B0011 · best infeasible · seed 0

B0011-heuristic-0

HeuristicA · violates 1 of 17 benchmark constraints (1 violations). Brief B0011

Plan drawing of a triplex on a 16.0 by 22.4 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 51 square metres. Dwelling U1 (1BR) has 5 rooms totalling 51 square metres. Dwelling U2 (2BR) has 6 rooms totalling 103 square metres. Building footprint 118 square metres; open space 245 square metres. This design is infeasible; failing categories: bad proportion. Objective scores, higher is better: density 0.80, daylight 0.55, privacy 0.76, circulation 0.64, carbon 0.76, cost 0.49.
B0011 · heuristic · seed 0scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a triplex on a 16.0 by 22.4 metre lot, 2 storeys, 3 dwellings, 18 rooms. Dwelling U0 (1BR) has 5 rooms totalling 51 square metres. Dwelling U1 (1BR) has 5 rooms totalling 51 square metres. Dwelling U2 (2BR) has 6 rooms totalling 103 square metres. Building footprint 118 square metres; open space 245 square metres. This design is infeasible; failing categories: bad proportion. Objective scores, higher is better: density 0.80, daylight 0.55, privacy 0.76, circulation 0.64, carbon 0.76, cost 0.49.

Objective vector

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

density
0.799
daylight
0.548
privacy
0.763
circulation
0.635
carbon
0.765
cost
0.486

Reported quantities

FAR proxy (GFA / lot)
0.66
site utilisation
0.869
gross floor area, m²
235.3
footprint, m²
117.7
carbon proxy, kgCO₂e/m² (A1–A3)
345
cost index / m² (unitless)
2.55
worst habitable room, daylight
0.168
circulation share of GFA
17%
open space, net of parking
63%
courtyard void, m²
0.0
plumbing stacks
2
footprint corners
4
preferred adjacencies met
0%

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 failedliving aspect 2.74 > 2.60
  • 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
U01BR51.05
U11BR51.55
U22BR102.56
All 18 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared015.111.65 × 1.30
CORE@1shared circulationshared115.111.65 × 1.30
U1@0#2kitchenU108.63.00 × 2.85
U1@0#3bathroomU104.71.65 × 2.85
U1@0#0entryU103.41.20 × 2.85
U1@0#1livingU1018.15.85 × 3.10
U1@0#4bedroom primaryU1016.75.85 × 2.85
U0@0#0entryU003.41.20 × 2.85
U0@0#3bathroomU004.71.65 × 2.85
U0@0#2kitchenU008.42.95 × 2.85
U0@0#1livingU0018.05.80 × 3.10
U0@0#4bedroom primaryU0016.55.80 × 2.85
U2@1#2kitchenU219.55.15 × 1.85
U2@1#3bathroomU219.65.20 × 1.85
U2@1#0entryU212.41.30 × 1.85
U2@1#1livingU2149.511.65 × 4.25
U2@1#4bedroom primaryU2116.26.00 × 2.70
U2@1#5bedroom secondaryU2115.35.65 × 2.70

Side by side