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 · daylight-optimal · seed 1

B0050-cpsat-1-15

CP-SATE · 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 80 square metres. Dwelling U1 (2BR) has 6 rooms totalling 63 square metres. Building footprint 84 square metres; open space 161 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.78, daylight 0.78, privacy 0.87, circulation 0.70, carbon 0.66, cost 0.00.
B0050 · cpsat · seed 1scale 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 80 square metres. Dwelling U1 (2BR) has 6 rooms totalling 63 square metres. Building footprint 84 square metres; open space 161 square metres. This design satisfies every benchmark hard constraint. Objective scores, higher is better: density 0.78, daylight 0.78, privacy 0.87, circulation 0.70, carbon 0.66, cost 0.00.

Objective vector

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

density
0.783
daylight
0.778
privacy
0.875
circulation
0.704
carbon
0.657
cost
0.000

Reported quantities

FAR proxy (GFA / lot)
0.62
site utilisation
0.859
gross floor area, m²
151.5
footprint, m²
84.0
carbon proxy, kgCO₂e/m² (A1–A3)
383
cost index / m² (unitless)
3.31
worst habitable room, daylight
0.582
circulation share of GFA
10%
open space, net of parking
66%
courtyard void, m²
0.0
plumbing stacks
4
footprint corners
4
preferred adjacencies met
100%

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
U02BR79.56
U12BR63.06
All 14 rooms
RoomTypeDwellingStoreyw × h m
U0@0#0entryU004.51.50 × 3.00
U0@0#1livingU0027.55.50 × 5.00
U0@0#2kitchenU009.03.00 × 3.00
U0@0#3bathroomU0012.55.00 × 2.50
U0@0#4bedroom primaryU0013.54.50 × 3.00
U0@0#5bedroom secondaryU0012.55.00 × 2.50
U1@1#0entryU112.31.50 × 1.50
U1@1#1livingU1122.53.00 × 7.50
U1@1#2kitchenU116.03.00 × 2.00
U1@1#3bathroomU113.81.50 × 2.50
U1@1#4bedroom primaryU1116.53.00 × 5.50
U1@1#5bedroom secondaryU1112.03.00 × 4.00
CORE@0shared circulationshared04.51.50 × 3.00
CORE@1shared circulationshared14.51.50 × 3.00

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