Table 4 The tasks, associated resources...

Table 4

The tasks, associated resources and efficiencies in DES model

Task name	Resource: Equipment (R₁)/worker (R₂)		Unit	Efficiency
PC external wall hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC internal wall hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC wall support install	Crane (STT293)		min/pcs	Uniform(5.8, 9)†
Installation adjust	PC worker		min/pcs	P{20} = 20% P{0} = 80%†
Joint grout	Rebar install worker		min/pcs	15.024*
PC beam hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC slab hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC stair hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC balcony hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC beam support	Crane (STT293)		min/pcs	Uniform(5.8, 9)†
PC slab support install	Crane (STT293)		min/pcs	Uniform(5.8, 9)†
PC wall transportation	Wall truck		min/batch	Uniform(100, 120)†
PC beam transportation	Beam truck		min/batch	Uniform(100, 120)†
PC slab transportation	Slab truck		min/batch	Uniform(100, 120)†
PC stairs and balcony transportation	Stairs and balcony truck		min/batch	Uniform(100, 120)†
PC wall unload	Crane (STT293)	Wall truck	min/pcs	Uniform(7.3, 9.3)†
PC beam unload	Crane (STT293)	Beam truck	min/pcs	Uniform(7.3, 9.3)†
PC slab unload	Crane (STT293)	Slab truck	min/pcs	Uniform(7.3, 9.3)†
PC stairs and balcony unload	Crane (STT293)	Stairs and balcony truck	min/pcs	Uniform(7.3, 9.3)†
CS concrete pump	Pump	Concrete worker	m³/h	70
CS beam and slab rebar install	Rebar install worker		min/m²	10.04*
CS wall and column rebar install	Rebar install worker		min/m²	11.63*
Post pouring joint formwork install	Crane (STT293)		min/pcs	CS = Uniform(5.8, 9)†
CS wall and column and beam formwork install	Formwork worker		min/m²	13.85*
CS wall and column rebar processing	Rebar processing worker		min/m²	60.26*
CS wall and column rebar transportation	Rebar processing worker	Lift	min/batch	(Uniform(1, 2) × ht./36 + 6)/4*
CS beam and slab rebar transportation	Rebar processing worker	Lift	min/batch	(Uniform(1, 2) × ht./36 + 6)/4*

Task name	Resource: Equipment (R₁)/worker (R₂)		Unit	Efficiency
PC external wall hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC internal wall hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC wall support install	Crane (STT293)		min/pcs	Uniform(5.8, 9)†
Installation adjust	PC worker		min/pcs	P{20} = 20%P{0} = 80%†
Joint grout	Rebar install worker		min/pcs	15.024*
PC beam hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC slab hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC stair hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC balcony hoist	Crane (STT293)	PC worker	min/pcs	Uniform(20.3, 22.3)†
PC beam support	Crane (STT293)		min/pcs	Uniform(5.8, 9)†
PC slab support install	Crane (STT293)		min/pcs	Uniform(5.8, 9)†
PC wall transportation	Wall truck		min/batch	Uniform(100, 120)†
PC beam transportation	Beam truck		min/batch	Uniform(100, 120)†
PC slab transportation	Slab truck		min/batch	Uniform(100, 120)†
PC stairs and balcony transportation	Stairs and balcony truck		min/batch	Uniform(100, 120)†
PC wall unload	Crane (STT293)	Wall truck	min/pcs	Uniform(7.3, 9.3)†
PC beam unload	Crane (STT293)	Beam truck	min/pcs	Uniform(7.3, 9.3)†
PC slab unload	Crane (STT293)	Slab truck	min/pcs	Uniform(7.3, 9.3)†
PC stairs and balcony unload	Crane (STT293)	Stairs and balcony truck	min/pcs	Uniform(7.3, 9.3)†
CS concrete pump	Pump	Concrete worker	m³/h	70
CS beam and slab rebar install	Rebar install worker		min/m²	10.04*
CS wall and column rebar install	Rebar install worker		min/m²	11.63*
Post pouring joint formwork install	Crane (STT293)		min/pcs	CS = Uniform(5.8, 9)†
CS wall and column and beam formwork install	Formwork worker		min/m²	13.85*
CS wall and column rebar processing	Rebar processing worker		min/m²	60.26*
CS wall and column rebar transportation	Rebar processing worker	Lift	min/batch	(Uniform(1, 2) × ht./36 + 6)/4*
CS beam and slab rebar transportation	Rebar processing worker	Lift	min/batch	(Uniform(1, 2) × ht./36 + 6)/4*

Note(s): * the value is calculated from local Construction Engineering Quota database (SCPCM, 2016a, 2016b), † the value is from on-site pre-experiments

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