As a group, Timothy Julian Winata and Maya Devina Ayu Kurniawan, is interning as quality control in an on-going project of B Residence Grogol. Project B Residence Grogol is a project owned by developer PT MGM Propertindo. This project has a land area of approximately 4300 m2. The B Residence building is used for apartments and offices. The number of towers in this project is 1 tower and the number of floors in this building is 23 floors. Their activities include studying drawings, studying drilling and casting processes, checking reinforcement, performing slump tests, and testing concrete compressive strength and tensile strength of iron.