Energy consumption of bridge construction: conventional vs precast girders Jati Utomo Dwi Hatmoko, Subrata Aditama K.A. Uda, Arya Desta Andika and Amelia Kristina Putri E3S Web Conf., 202 (2020) 09003 Published online: 10 November 2020 DOI: 10.1051/e3sconf/202020209003