| Projects | |
| The Permalok Interlocking Pipe Joining System enables engineers and contractors to complete underground construction projects significantly faster than with traditional steel pipe. The most dramatic savings are experienced when Permalok casing or pressure pipe is used in the precise, labor-and equipment-intensive processes of pipe jacking and pipe ramming. A number of examples of Permalok's successful projects are listed below. |
Microtunneling Projects Microtunneling is a method of steerable remote control pipe jacking, and is considered the most precise pipe jacking method. It can cover the longest distances, and can handle variable ground conditions. Generally, microtunneling doesn't cause much subsidence compared to other pipe jacking methods. |
Project | Contractor | |||
| Tolt Pipeline Project | Northwest Boring | ||||
| Beaver Water District Intake Expansion | Michels Pipeline Construction, Inc. | ||||
| Los Angeles Harbor Project | Westcon Microtunneling, Inc. | ||||
| Standley Lake Project | ASI/Michels Pipeline | ||||
| West Side Combined Sewer Overflow | Impreglio / S A Healy JV | ||||
Pipe Jacking Projects Pipe jacking utilizes a jacking device to push pipe horizontally into the ground, forming a continuous string of pipe. Material is excavated as the pipe is pushed in. |
Project | Contractor | |||
| Tampa Bay Water Project | E.J.M. Pipe Services, Inc. | ||||
| Metra RR Crossing Project | Midwest Mole | ||||
Pipe Ramming Projects Pipe ramming is a non-steerable method of forming a bore by driving a steel casing, usually open-ended, horizontally through the ground with a percussive hammer. The soil may be removed from an open-ended casing by augering, jetting or compressed air. In appropriate ground conditions, a closed casing may be used. Since the material is not excavated until after the pipe has been driven into place, there is little or no settlement of the surface roadway or railbed. |
Project | Contractor | |||
| Tampa Bay Water Project | Ballast Nedham | ||||
| El Dorado RR Crossing Project | Middlecreek Mining | ||||
| IDOT RR Crossing Project | Miller the Driller | ||||
| Gold Beach, Oregon | Freeman Rock Enterprises/SCCI | ||||
Auger Boring Projects Auger boring is a pipe jacking method of forming a bore by means of a rotating cutting head. The equipment may have limited steering capability, and auger boring is limited in the distance it can cover, but it is the most cost-effective method of pipe jacking. |
Project | Contractor | |||
| Springfield, VA Interchange Project | R.L. Ridgell Construction, Inc. | ||||
| Milwaukee Rail Yard Project | Miller the Driller | ||||
| Wichita Kansas Project | Augers Unlimited | ||||
Horizontal Directional Drilling Projects Horizontal Directional Drilling (HDD) is a fast method of trenchless construction that uses guided drilling to permanently place pipe beneath both natural and man made barriers such as rivers, shores, roads and buildings.
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Project | Contractor | |||
| Port Hueneme Naval Base Project | Cherrington Corporation | ||||
| Rockaway Beach Sanitary District Project | Cherrington Corporation | ||||
| Twin Rocks Sanitary District Project | The HDD Company | ||||
