Mulyati E, Amelia D. The Effect of the Number of Work Shifts for Erection Box Girder Using Launching Gantry on the Cost and Implementation Time in the Medan-Binjai II Railway Line Project. bjce [Internet]. 2025 Nov. 28 [cited 2026 Jun. 3];7(2):153-61. Available from: https://ojs.unsulbar.ac.id/index.php/bjce/article/view/5546