Joinery Design for Joint Type I, L, T, X, and XYZ in Aluminum Pipe Nathania Clairine Phoebe, Bayu Ramadhan Wardani and Andriano Simarmata E3S Web Conf., 426 (2023) 02054 Published online: 15 September 2023 DOI: 10.1051/e3sconf/202342602054