Once on the site, foremen inspected the manhole and decided to shift the alignment of the manhole back with the use of wedges. Grout is one of the greatest products ever seen. It's efficient, cost-effective and it works tremendously. The worse the leak, the easier it is to repair with chemical grout, explained John Oswald, president of Oswald Enterprises. Not all manhole sealing problems are as complex as the one cited above.
Many cities have full-time manhole sealing programs.
Many contractors have dedicated sealing crews working continuously on manhole sealing. To reduce equipment size and complexity, with their associated costs, manufacturers have introduced portable sealing systems, thus freeing up vehicle-mounted joint and lateral sealing units for other applications that only they can do. CUES Inc. The PortaPump consists of two individual pumps, a chemical and water supply hose, and a 25-ft dual chemical hose line with dispensing probe. The chemical and water containers can be plastic garbage cans or a similar type container. When using a urethane sealant, a garbage can and the urethane storage container can serve the purposes.