Such model was modified as done with Sosa et. al., 2007 model, including nodes to register number of workers, concrete mixers, delays due to lack of raw material and inspections.
Dicho modelo se modificó de manera similar al de Sosa et al., 2007, añadiéndole nodos para incluir obreros, mezcladoras de hormigón, demoras por falta de insumos y revisiones.