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Floors Load :27 kN/m
Roof Load :12.4 kN/m
15.02 kN
1
1
1
3
8
8
3
29.76 kN
2
2
2
3
8
8
3
29.61 kN
2
2
2
3
8
8
3
29.61 kN
2
2
2
4
9
9
4
28.86 kN
2
2
2
4
9
9
4
29.19 kN
2
2
2
4
9
4
9
29.19 kN
2
2
2
5
10
10
5
28.41 kN
14 x 3.5 m = 49 m
2
2
2
10
5
10
5
28.35 kN
2
2
2
5
5
10
10
28.29 kN
2
2
2
6
6
11
11
27.51 kN
2
2
2
6
11
11
6
27.10 kN
2
2
2
6
11
11
6
26.70 kN
2
2
2
7
12
7
12
26.04 kN
2
2
2
7
12
12
7
24.84 kN
2
2
2
4 m
12
7
12
7
6 m
3 m
6 m
Fig. 1.
Fifteen-storey, three-bay moment resisting steel frame
The optimum steel profiles obtained by the harmony search algorithm are given in
Table 1 (UB Sections are for beams and UC sections are for columns). This design
required 25,000 frame analysis 20,000 of which is needed for the improvisation of the
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