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.

B0048 · best infeasible · seed 2

B0048-nsga2-2-1498

NSGA-IID · violates 1 of 17 benchmark constraints (1 violations). Brief B0048

Plan drawing of a adu pair on a 14.2 by 18.4 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 81 square metres. Dwelling U1 (studio) has 4 rooms totalling 81 square metres. Building footprint 92 square metres; open space 166 square metres. This design is infeasible; failing categories: insufficient area. Objective scores, higher is better: density 0.99, daylight 0.61, privacy 0.74, circulation 0.62, carbon 0.75, cost 0.44.
B0048 · nsga2 · seed 2scale bar 5 m · north arrow top right✕ INFEASIBLE

Plan drawing of a adu pair on a 14.2 by 18.4 metre lot, 2 storeys, 2 dwellings, 14 rooms. Dwelling U0 (3BR) has 8 rooms totalling 81 square metres. Dwelling U1 (studio) has 4 rooms totalling 81 square metres. Building footprint 92 square metres; open space 166 square metres. This design is infeasible; failing categories: insufficient area. Objective scores, higher is better: density 0.99, daylight 0.61, privacy 0.74, circulation 0.62, carbon 0.75, cost 0.44.

Objective vector

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

density
0.993
daylight
0.610
privacy
0.738
circulation
0.617
carbon
0.749
cost
0.435

Reported quantities

FAR proxy (GFA / lot)
0.70
site utilisation
0.996
gross floor area, m²
183.4
footprint, m²
91.7
carbon proxy, kgCO₂e/m² (A1–A3)
350
cost index / m² (unitless)
2.63
worst habitable room, daylight
0.235
circulation share of GFA
22%
open space, net of parking
65%
courtyard void, m²
0.0
plumbing stacks
2
footprint corners
4
preferred adjacencies met
33%

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 failed3BR 80.9 < 84.0 m^2
  • 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
U03BR80.98
U1studio80.94
All 14 rooms
RoomTypeDwellingStoreyw × h m
CORE@0shared circulationshared010.81.30 × 8.30
CORE@1shared circulationshared110.81.30 × 8.30
U0@0#5bedroom primaryU0013.13.40 × 3.85
U0@0#3kitchenU008.03.40 × 2.35
U0@0#4bathroomU003.61.70 × 2.10
U0@0#0entryU003.61.70 × 2.10
U0@0#7bedroom secondaryU009.82.85 × 3.45
U0@0#2diningU0012.13.50 × 3.45
U0@0#1livingU0019.64.05 × 4.85
U0@0#6bedroom secondaryU0011.22.30 × 4.85
U1@1#2kitchenU1136.14.35 × 8.30
U1@1#1livingU1119.45.40 × 3.60
U1@1#0entryU1115.45.40 × 2.85
U1@1#3bathroomU1110.05.40 × 1.85

Side by side