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.

B0050 · carbon-optimal · seed 0

B0050-heuristic-0~r8

HeuristicA · meets all 17 benchmark constraints. Brief B0050

Plan drawing of a duplex on a 14.0 by 17.5 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 73 square metres. Dwelling U1 (2BR) has 6 rooms totalling 73 square metres. Building footprint 88 square metres; open space 156 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.56, privacy 0.80, circulation 0.58, carbon 0.74, cost 0.51.
B0050 · heuristic · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 14.0 by 17.5 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (2BR) has 6 rooms totalling 73 square metres. Dwelling U1 (2BR) has 6 rooms totalling 73 square metres. Building footprint 88 square metres; open space 156 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 1.00, daylight 0.56, privacy 0.80, circulation 0.58, carbon 0.74, cost 0.51.

Objective vector

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

density
1.000
daylight
0.561
privacy
0.795
circulation
0.576
carbon
0.745
cost
0.508

Reported quantities

FAR proxy (GFA / lot)
0.72
site utilisation
1.000
gross floor area, m²
176.4
footprint, m²
88.2
carbon proxy, kgCO₂e/m² (A1–A3)
352
cost index / m² (unitless)
2.51
worst habitable room, daylight
0.312
circulation share of GFA
20%
open space, net of parking
64%
courtyard void, m²
0.0
plumbing stacks
1
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 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
U02BR73.16
U12BR73.16
All 14 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared015.11.80 × 8.40
CORE@1shared circulationshared115.11.80 × 8.40
U0@0#2kitchenU009.41.80 × 5.20
U0@0#3bathroomU003.61.80 × 2.00
U0@0#0entryU002.21.80 × 1.20
U0@0#1livingU0033.64.00 × 8.40
U0@0#4bedroom primaryU0015.52.90 × 5.35
U0@0#5bedroom secondaryU008.82.90 × 3.05
U1@1#2kitchenU117.61.80 × 4.20
U1@1#3bathroomU115.11.80 × 2.85
U1@1#0entryU112.41.80 × 1.35
U1@1#1livingU1130.23.60 × 8.40
U1@1#4bedroom primaryU1117.73.30 × 5.35
U1@1#5bedroom secondaryU1110.13.30 × 3.05

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