DARMAWAN, Rian; SUSETYO, Budi. IMPROVING THE QUALITY OF WORK ON CULVERT UNDERPASS BOX STRUCTURES USING THE LEAN SIX SIGMA METHOD. Jurnal Pensil : Pendidikan Teknik Sipil, [S. l.], v. 14, n. 1, p. 1–19, 2025. DOI: 10.21009/jpensil.v14i1.45230. Disponível em: https://journal.unj.ac.id/unj/index.php/jpensil/article/view/45230. Acesso em: 2 feb. 2025.