Nurlita Pertiwi, Irma Aswani Ahmad and Sarfa Hafid 2023. Feasibility of Green Concrete as a Material of Precast Beams for Residential House. The International Journal of Science & Technoledge. 11, 9 (Oct. 2023). DOI:https://doi.org/10.24940/theijst/2023/v11/i9/ST2309-003.