Research on Lean Planning and Optimization for Precast Component Production Based on Discrete Event Simulation

Table 2

Complexity evaluation index system for precast components produced by assembly line.

First-class index	Code	Second-class index	Weight
Complexity of component shape	1	Volume of component
	2	Geometric shape of component (e.g., rectangle, triangle, circle, curved surface, “L” shape, and “T” shape)
	3	Type and quantity of reserved holes for components
	4	Embedded window frame and window
	5	Complexity of component surface and end surface (e.g., concrete washing surface, fair-faced concrete, chiselling surface, and shear slot)
Complexity of component composition	6	Complexity of component steel (e.g., steel content, steel location, and exposed steel)
	7	Type and quantity of embedded parts
	8	Type and quantity of grouting sleeve
	9	Setting of thermal insulation materials
Complexity of processing technology	10	Cast times (e.g., one-time cast or multitimes cast)
	11	Processing technology of component in reverse position
	12	Prestressed processing technology