Nevertheless, all pipes showed higher resistance to that specified by NBR 8890 ABNT, 2007, with respect to the PS2 simple concrete pipes: type SB with ND of 600 mm, which is of 36 kN/m.
Sin embargo, todos los tubos mostraron una mayor resistencia a la especificada en la norma NBR 8890 ABNT, 2007, respecto a los tubos de hormigón simple PS2: tipo PB con ND de 600 mm, que es de 36 kN/m.