Due to highly increasing population rate and urban development, many structural problems occurred, in many parts of the world when constructing the wastewater networks, especially cracking the pipes as a result of many factors like bad structures, overloading the roads, erosion and agitation of soil. These factors lead to a series of problems and the collapse of networks, by the seepage of groundwater through the cracks into the pipes or wastewater from the pipes to the soil, which adversely affects the soil and leads to the occurrence of ground surface settlement and soil settlement around the pipes, which causes settlement of adjacent buildings and structures, in many cases. Because of the difficulty of handling this problem, as it involves more than one factor (soil, structures and wastewater flow), and the delay in exploring the causes or lack of experience in this area, severe damages occurred along with the inability to manage such crisis in the proper time or finding economic solutions with accurate mitigation measures.