Different activities were executed in parallel operation, so some of them were not inspected, thus generating enchained failures, such as problems in the window/door openings derived in failures in windows and doors.
Varios actividades se ejecutaban en paralelo por tanto algunas de ellas no se verificaron, lo que generó fallos encadenados, tales como los problemas en los vanos de obra llevaron después a fallas en ventanas y puertas.