The cost of steel section had been the important factor in design process. Hence, triangular web profile which has higher shear capacity than normal flat web had been introduced. In order to reduce the steel weight, opening in web had been introduced. In this paper, a numerical study on shear strength for triangular web profile steel section with opening is carried out. A total of four various opening shapes and sizes of triangular web profile steel section are developed. A comparison of finite element analysis results on triangular web profile steel section with various web openings is reported. Overall results show that in term of deformed shapes, each model of the triangular web profile steel section with openings behave similarly. Triangular web profile steel section without opening has higher ultimate shear strength compared with triangular web profile steel section with openings. The best shape of opening is diamond shape because it's give highest shear buckling capacity compared to circle, square and hexagon shape openings. Reduction in volume for diamond shape is lesser than the reduction in volume for circle, square and hexagon shape openings. The reduction in volume decreases, as the opening size decreases.
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