Underground Construction

Cost Effective Solutions

From putting in new storm drain lines, sewer lateral, water and other conduits, to repairing and renovating drains, DRYCO has a range of alternative, cost-conscious solutions in addition to excavation. We can help you with your underground construction needs with a minimum of cost and disruption.

Why Drains Need Repairing
Drains and sewers may crack due to ground movement, subsidence, tree root infiltration, or corrosion—or they may totally collapse. The result is a structurally defective drain, causing repeat blockages or leaks into the surrounding soil.

Excavation
Excavation is normally used to replace:
• short sections of pipe at a shallow depth or
• a collapsed or structurally defective pipe which cannot be repaired using any of the No-Dig
techniques listed below

No-Dig (repairs without excavation)
There are two types of No-Dig techniques that DRYCO specializes in:

Localine - When defects are localized in a small area, this area can be patched to produce a permanent high quality repair. Patches are applied by coating a fiber-glass mat with epoxy resin. The mat is then wrapped around an inflatable packer and pushed into position. The packer is inflated and the resin left to cure.

Section Lining - When the drain is damaged along its length, the whole section can be lined. It involves the insertion of a lining sock impregnated with a polyester resin fiber along the length of the damaged drain. It is then molded into place using air or water pressure and left to cure. The result is a new fiber reinforced pipe within the old damaged pipe.