Cut-off walls (water intrusion) involve the insention of tubularochette (hollow tube) into the earth in a strategic grid pattern throughout the effective water intrusion area and injecting chemical grout through the hollow tube. Thus, permeating through the soil and chemically reacting (expanding) when in contact with water, and providing a barrier to restrict water intrusion.

Cut-off walls (water intrusion) involve the insention of tubularochette (hollow tube) into the earth in a strategic grid pattern throughout the effective water intrusion area and injecting chemical grout through the hollow tube. Thus, permeating through the soil and chemically reacting (expanding) when in contact with water, and providing a barrier to restrict water intrusion.