Table 2 Summary table of parameters.

From: Multi-objective optimization design approach for prefabricated buildings to minimize cost, duration and carbon emissions using ant colony algorithm

Layers

Cast-in-place components

Prefabricated components

Number

Type

Cost

(yuan) × 104

duration(day)

Carbon

emission(t)

Prefabricated

rate(%)

Number

Cost(yuan) × 104

duration(day)

Carbon

emission(t)

Prefabricated

rate(%)

Underground

1

Foundation

9.72

18

50.01

0

-

-

-

-

-

First layer

2

Column

4.50

9

18.95

0

3

5.67

5

7.42

2.76

4

beam

6.18

11

25.74

0

5

7.93

4

11.93

4.76

6

Board

5.52

9

18.87

0

7

6.39

5

12.16

2.78

8

Wall

3.98

10

18.47

0

9

4.91

6

16.03

12.02

10

Stair

0.49

6

2.29

0

11

0.63

2

1.04

0.71

Second layer

12

Column

2.88

6

11.26

0

13

4.53

4

6.09

1.62

14

beam

5.52

11

23.29

0

15

7.03

4

10.63

4.21

16

Board

5.52

9

18.87

0

17

6.22

4

12.14

2.78

18

Wall

5.90

12

29.81

0

19

7.05

9

23.10

17.16

20

Stair

0.37

5

1.75

0

21

0.42

2

0.70

0.47

Three layer

22

Column

2.70

6

10.28

0

23

4.53

4

6.09

2.20

24

beam

4.49

10

18.25

0

25

6.79

4

10.28

4.06

26

Board

7.69

13

26.40

0

27

9.73

6

18.37

4.41

28

Wall

5.97

12

30.26

0

29

7.78

8

25.48

18.98

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