As North America’s underground infrastructure ages and deteriorates, system owners look to ways they can get the most bang for their buck when it comes to repairs. Many times, that will lead them to trenchless rehabilitation methods.
Looking at the rehabilitation options, cured-in-place pipe (CIPP), which turns 50 in 2021 is by far the leading trenchless option when looking at improving mainline sewers. Generally speaking, when the system owners look to rehabilitate these runs, they also look to rehabilitate the associated manhole structures. The hope is that the two combined will considerably reduce inflow and infiltration (I/I).