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.

B0062 · daylight-optimal · seed 0

B0062-cpsat-0-33

CP-SATE · meets all 17 benchmark constraints. Brief B0062

Plan drawing of a duplex on a 16.1 by 18.5 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (1BR) has 5 rooms totalling 103 square metres. Dwelling U1 (2BR) has 6 rooms totalling 70 square metres. Building footprint 108 square metres; open space 188 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.68, daylight 0.81, privacy 0.88, circulation 0.68, carbon 0.68, cost 0.26.
B0062 · cpsat · seed 0scale bar 5 m · north arrow top right✓ FEASIBLE

Plan drawing of a duplex on a 16.1 by 18.5 metre lot, 2 storeys, 2 dwellings, 13 rooms. Dwelling U0 (1BR) has 5 rooms totalling 103 square metres. Dwelling U1 (2BR) has 6 rooms totalling 70 square metres. Building footprint 108 square metres; open space 188 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.68, daylight 0.81, privacy 0.88, circulation 0.68, carbon 0.68, cost 0.26.

Objective vector

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

density
0.681
daylight
0.812
privacy
0.875
circulation
0.682
carbon
0.683
cost
0.257

Reported quantities

FAR proxy (GFA / lot)
0.61
site utilisation
0.792
gross floor area, m²
182.8
footprint, m²
108.0
carbon proxy, kgCO₂e/m² (A1–A3)
374
cost index / m² (unitless)
2.90
worst habitable room, daylight
0.454
circulation share of GFA
10%
open space, net of parking
64%
courtyard void, m²
0.0
plumbing stacks
3
footprint corners
4
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 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
U01BR102.85
U12BR69.56
All 13 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU005.33.50 × 1.50
U0@0#1livingU0021.03.50 × 6.00
U0@0#2kitchenU0012.06.00 × 2.00
U0@0#3bathroomU005.02.50 × 2.00
U0@0#4bedroom primaryU0059.58.50 × 7.00
U1@1#0entryU113.01.50 × 2.00
U1@1#1livingU1128.08.00 × 3.50
U1@1#2kitchenU119.02.00 × 4.50
U1@1#3bathroomU113.82.50 × 1.50
U1@1#4bedroom primaryU1112.33.50 × 3.50
U1@1#5bedroom secondaryU1113.53.00 × 4.50
CORE@0shared circulationshared05.33.50 × 1.50
CORE@1shared circulationshared15.33.50 × 1.50

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