Interaction Diagram of Hollow-Crossed Reinforced Concrete Columns Undergoing Biaxial Bending Using the Closed Polygon Method. Jur. Ilm. Dinam. Rekay. [Internet]. 2025 Feb. 15 [cited 2025 Apr. 2];21(1). Available from: https://jurnal.dinarek.unsoed.ac.id/index.php/main/article/view/103