Why line an entire sewer pipe when grouting the pipe’s joints will stop the inflow and infiltration? That was the question Orange County (California) Sanitation District Senior Engineer Dickie Fernández first asked himself and then the utility’s engineering managers.
“The pipe segments were in great shape. I saw minimal cracking,” Fernández says about his engineering condition assessment of two sewer trunk lines and a sewer interceptor pipeline targeted for repair in OC San’s 380 miles of sewer main. “I proposed that if we just performed chemical grout injection on leaking joints, we would control the existing inflow and infiltration and could
