Commercial Services

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  • foundation repair and maintenance

    Drilled and Grouted Tie-Back Anchors

    These can be from 1 inch diameter up to 8 inch diameter typically range from 10 feet deep to 100 feet deep in tension capacities of a thousand pounds to 1 million pounds.

  • pile driving new support beams

    Helical Anchors and Piles

    In the right soil conditions these are quick and efficient at developing tension or compression loads from a thousand pounds to 500 thousand pounds.  Depths typically range from 10 feet to about 100 feet deep and can be installed vertically or horizontally.  Square shaft helices come in 1.25”, 1.5”, 1.75”, and 2.25” material. Pipe Helices are made in many sizes such as 2-7/8”, 3-1/2”, 4”, 5”, 6”, 7”, 8”, 9’”, 10”, 12”, 14”, 24” diameters.

  • hillside remediation and landslide prevention

    Landslide Remediation / Hillside Stabilization

    Whether they were created by acts of nature or caused by breaking of water lines, PLIsystems has many tools and equipment to repair the landslides.  We incorporate tie-back anchors, drill piles shotcrete, soil nails and many other techniques to solve the problem.

  • retaining wall repair and maintenance

    Wall Construction

    Walls maybe built with driven pipe piles, driven wide flange piles drilled piles tie-back anchors, concrete or shotcrete, soil nails and shotcrete, gabion baskets, small concrete blocks or large concrete blocks such as ultra-block, or other geo-grid.

  • foundation repair


    Underpinning is the process of strengthening the foundation of an existing building or other structure. Underpinning may be necessary for a variety of reasons:

    • The original foundation is simply not strong or stable enough.
    • The usage of the structure has changed.
    • The properties of the soil supporting the foundation may have changed (possibly through subsidence) or were mischaracterized during design.
    • The construction of nearby structures necessitates the excavation of soil supporting existing foundations.
    • To increase the depth or load capacity of existing foundations to support the addition of another storey to the building (above or below grade).
    • It is more economical, due to land price or otherwise, to work on the present structure’s foundation than to build a new one.
    • Earthquake, flood, drought or other natural causes have caused the structure to move, thereby requiring stabilisation of foundation soils and/or footings.
  • foundation repair and construction


    Micropiles, also called mini piles, are often used for underpinning. They are also used to create foundations for a variety of project types, including highway, bridge and transmission tower projects. They are especially useful at sites with difficult or restricted access, or with environmental sensitivity.[8][9] Micropiles are made of steel with diameters of 60 to 200 mm. Installation of micropiles through top soil, sand and cobblestones overburden and into soil rock can be achieved using Air Rotary or Mud Rotary drilling, impact driving, jacking, vibrating or screwing machinery.

  • landslide prevention and erosion maintenance

    Soil Nails

    Soil nailing is a construction technique that can be used as a remedial measure to treat unstable natural soil slopes or as a construction technique that allows the safe over-steepening of new or existing soil slopes. The technique involves the insertion of relatively slender reinforcing elements into the slope – often general purpose reinforcing bars (rebar) although proprietary solid or hollow-system bars are also available. Solid bars are usually installed into pre-drilled holes and then grouted into place using a separate grout line, whereas hollow bars may be drilled and grouted simultaneously by the use of a sacrificial drill bit and by pumping grout down the hollow bar as drilling progresses.

Commercial Projects

Willamette Fishway – West Linn, OR

Specialty Contractor: PLI Systems, Inc.

Project Owner: Oregon Fish & Wildlife

General Contractor: Advanced American Construction

Geotechnical Engineer: GRI

Structural Engineer: Peterson Structural Engineers

This was a challenging site because all equipment and personnel had to be brought to the site by barges.

We used 7” casing extended through the overburden material, approximately 15’ deep and a minimum of 15’ into solid rock. #10 Williams, epoxy coated bars were grouted in place.

Our portable drill was moved into position by hand due to the limited access.

All the drilling was performed using down the hole hammers with an underreamimg bit system.

Amazon Expansion – Salem, OR

Specialty Contractor: PLI Systems, Inc.

General Contractor: Perlo Construction

Owner: Amazon

Geotechnical Engineer: Pali Consulting & Alder Geotechnical Services

Structural Engineer: Bowers Engineering Services

Drove 40’ long, 8” diameter schedule 80 pipe piles to refusal for building footings

The piles were driven by a Side Grip Pile Driver, SG45v Movax. This is a vibratory hammer with the latest technology to mitigate uncontrolled vibrations when starting and stopping the vibrating motors.

A DH-15 impact hammer was also used as necessary to achieve additional load. This hammer can be used at different angles and the amount of energy transmitted to the pile can be adjusted by a computer inside the cabin.

Alta – Morton, WA

Specialty Contractor: PLI Systems, Inc.

General Contractor: West Coast Contractors

Geotechnical Engineer: Geo Consultants NW

Structural Engineer: C.C. Peterson Engineering

Micropiles were installed to add support to the building as it was being remodeled. We used track equipment where access was available. Several locations with restricted access were approached with hand carried equipment.

Some of the drilling equipment had to be dismantled and reassembled at each micropile location in order to perform the work.

Most of the micropiles were installed using the injection bored technique.

Concrete caps and grade beams were installed (by others) on top of our micropiles.

With more than 30 years of experience, PLI Systems has the expertise and equipment to handle almost any commercial needs. We have gathered specialized equipment from all over the world and have hired experts from various fields to train our employees. From stabilizing settling foundations to remediating landslides, PLI Systems is the one company that does it all.

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PLI Systems has the expertise and equipment to handle almost any soil and foundation stabilization problem. We have gathered specialized equipment from all over the world.

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