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 · daylight-optimal · seed 2

B0011-cpsat-2-15

CP-SATE · meets all 17 benchmark constraints. 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 63 square metres. Dwelling U1 (1BR) has 5 rooms totalling 48 square metres. Dwelling U2 (2BR) has 6 rooms totalling 86 square metres. Building footprint 130 square metres; open space 230 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.80, daylight 0.87, privacy 0.76, circulation 0.50, carbon 0.71, cost 0.20.
B0011 · cpsat · seed 2scale bar 5 m · north arrow top right✓ FEASIBLE

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 63 square metres. Dwelling U1 (1BR) has 5 rooms totalling 48 square metres. Dwelling U2 (2BR) has 6 rooms totalling 86 square metres. Building footprint 130 square metres; open space 230 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.80, daylight 0.87, privacy 0.76, circulation 0.50, carbon 0.71, cost 0.20.

Objective vector

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

density
0.801
daylight
0.875
privacy
0.762
circulation
0.497
carbon
0.712
cost
0.203

Reported quantities

FAR proxy (GFA / lot)
0.66
site utilisation
0.871
gross floor area, m²
235.8
footprint, m²
130.0
carbon proxy, kgCO₂e/m² (A1–A3)
364
cost index / m² (unitless)
2.99
worst habitable room, daylight
0.556
circulation share of GFA
30%
open space, net of parking
59%
courtyard void, m²
0.0
plumbing stacks
5
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
U01BR63.05
U11BR47.55
U22BR86.36
All 18 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU0017.55.00 × 3.50
U0@0#1livingU0012.33.50 × 3.50
U0@0#2kitchenU0016.32.50 × 6.50
U0@0#3bathroomU005.02.00 × 2.50
U0@0#4bedroom primaryU0012.04.00 × 3.00
U1@0#0entryU104.53.00 × 1.50
U1@0#1livingU1019.33.50 × 5.50
U1@0#2kitchenU106.02.00 × 3.00
U1@0#3bathroomU103.82.50 × 1.50
U1@0#4bedroom primaryU1014.04.00 × 3.50
U2@1#0entryU219.06.00 × 1.50
U2@1#1livingU2121.03.00 × 7.00
U2@1#2kitchenU2117.52.50 × 7.00
U2@1#3bathroomU214.51.50 × 3.00
U2@1#4bedroom primaryU2112.33.50 × 3.50
U2@1#5bedroom secondaryU2122.04.00 × 5.50
CORE@0shared circulationshared019.56.50 × 3.00
CORE@1shared circulationshared119.56.50 × 3.00

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