Pipe number	Diameters of parallel pipes, inches
Pipe number	ACOA [13] Design I	HS [12] Design II	Real GA 1 Design III	Real GA 2 Design IV
1	0	0	0	0
2	0	0	0	0
3	0	0	0	0
4	0	0	0	0
5	0	0	0	0
6	0	0	0	0
7	144	96	0	0
8	0	0	0	0
9	0	0	0	0
10	0	0	0	0
11	0	0	0	0
12	0	0	0	0
13	0	0	0	0
14	0	0	0	0
15	0	0	120	96
16	96	96	84	96
17	96	96	96	96
18	84	84	96	84
19	72	72	84	72
20	0	0	72	0
21	72	72	72	72
Cost $ M	38.64	36.66	38.8	38.5
Diameter design	Discrete	Discrete	Discrete	Discrete
Number of Evaluations	13,928	6000	45,904	116,805