Intara, I. W., Werdantari, N. L. M., Jaya, I. M., & Krismayanti, I. G. A. A. (2026). The effect of choosing slab thickening or adding secondary beams on the cost of reinforced concrete structure. International Research Journal of Engineering, IT and Scientific Research, 12(4), 104–112. https://doi.org/10.21744/irjeis.v12n4.2617