Table 2

The alternative construction scenarios

Construction taskAlternative scenarioRemarks
PC components installationUp to 80 workers 
CS rebar processingUp to 40 workers 
PC wall transportation8∼12 trucks30 t, 12.3 m × 2.5 m, 37 litre diesel/100 km, transport Time ∼ Uniform(100–120) min
PC beam transportation1∼2 trucks30 t, 12.3 m × 2.5 m, 37 litre diesel/100 km, Time ∼ Uniform(100–120) min
PC slab transportation3∼5 trucks30 t, 12.3 m × 2.5 m, 37 litre diesel/100 km, Time ∼ Uniform(100–120) min
CS concrete pouringConcrete pump (HBT6006A-5)75 kW, 70 m3/h
1–3 pumps
Concrete pump (HBT8016C-5)132 kW, 85 m3/h
1∼3 pumps
Concrete pump (HBT6013C-5)90 kW, 65 m3/h
1∼3 pumps
CS rebar transportation3∼5 Construction lifts (SC200/200)66 kW, 2 × 2 t
PC components hoisting1 crane (XGT8039-25)Hoist time (min)
PC = Uniform(20.3, 21.8)
CS = Uniform(5.8, 8.5) hoist motors power(kW):
PC = 58.1, CS = 37.6
2 cranes (XCP330HG7525-16)Hoist time (min)
PC = Uniform(20.2, 22.3)
CS = Uniform(5.7, 9.1) hoist motors power (kW):
PC = 49.8, CS = 32.2
2 cranes (STT293)Hoist time (min)
PC = Uniform(20.3, 22.3)
CS = Uniform(5.8, 9) hoist motors power (kW):
PC = 55.6, CS = 36.0
1 crane (XGT500A8040-25)Hoist time (min): PC = Uniform(19.3, 21.4)
CS = Uniform(5.3, 8) hoist motors power (kW):
PC = 74.7, CS = 48.4
PC component supply chain modeJust-in-time (JIT)Supply chain without on-site storage
transportation-storage-hoistingStore one floor of PC component on-site
Total possible scenarios20,736,000

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