Services

Most of our work comes to us as referrals from satisfied customers and we are considered the contractor to go to when no one else can provide the kow how and ability to get the job done right.

We are cerified MBE/DBE.

Below are some of the major services we provide. Click on icon to see image portfolio:

 

Shoring


We provide various forms of permanent and temporary shoring using sheet piles, H-piles with lagging, pipe piles, shotcrete and more. Shoring can be braced or not.

Pile Driving


We have many specialized hammers and drivers capable of driving H-piles, Wide Flange, Sheet Pilles, Pipe Piles, Micropiles and more. Some of our large hammers are excavator mounted. Our small hammers can be handheld

 

Geotechnical Investigations

We specialze in geotechnical drilling/coring in remote/difficult access locations providing SPT samples and more. We perform drilling/coring for many Geotechnical engineers in Oregon and Washington.

Shotcrete


We have several certified shotcrete nozzlemen applying shotcrete for both structural and architectural purposes. Our shotcrete experts have carved many shotcrete walls to look like natural rock formations.

Other services we provide:

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.

Foam and Cellular concrete: Light weight fills perfect for reducing the lateral pressure demand on walls and also great for back filling difficult access locations.  Light weight cellular concrete fills can be pumpable and be as light as 30 pounds per cubic foot and also come in pervious cellular concretes.  Geofoam blocks are also available from 1 pcf to 2.5 pcf to be used in roads, buildings, or even backyards.

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.
Drilled shafts are great for load capacities ranging from 20 thousand pounds to well over a million pounds compression loads.  They can also handle up lift and torsion forces.  Typical diameters are from 12”, 14”, 16”, 18”, 20”, 24”, 30”, 36”, 48”, 60”, and 72”.  These can be installed with wet , partially cased, or open whole methods in gravels, sands, silty  and even socketed in solid rock conditions typical depths vary from 10 feet to 70 feet.

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 technics to solve the problem.

Fairly simple elements drilled as 18”, 24”, or 30” diameter and range inn depth from 15 feet to approximately 50 feet deep steal casing is cemented in the shaft vertically to allow for the installation of the elevator cylinder.  The drilling may occur for existing elevators or new installations.

Can be created of diameters from 6” up to 24” in depths from 10 feet to 60 feet deep.  Displacement piles are especially useful in soft soils where the soil is compressible and also in contaminated soils to avoid creating spoils needing removal.  Capacities range from 10,000 pounds to around 100,000 pounds.

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.

Is used for micropiles, tie-back anchors or soil nails where soil will not stay open in a drilled hole. Typically range from 2” to 10” diameters and capacities of 1,000 pounds up to 500,000 pounds.  Installed depths vary from 10 feet to 100 and 50 feet and can be installed horizontally as well as vertically.

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.
  • Rock anchors are used commonly as part of retaining walls, and as part of a system to resist movement of a foundation. Most rock anchors consist of a pre drilled hole that is filled with grout material. A threaded steel anchor bar that is sheathed and is then inserted into the grouted hole and is tensioned to the appropriate specifications of the particular job. There are many sizes and weight capacities of rock anchors depending on whether they are for small house foundation type jobs or for retaining large structures such as bridges.

    In various projects it is imperative to analyze quality and quantity of consolidated geologic formations. We accomplish this objective by rock core sampling. We utilize wireline core drilling and other methods.  In geotechnical coring, depths may be from 5 feet to 150 feet.

    Is necessary where excavations encounter water.  Dewatering wells are designed to lower the local water table.  Diameters for the wells are drilled anywhere from 6” to 30” and typically extend up to 60 feet deep. 
    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. Micropiles are made of steel with diameters of 60 to 200 mm. Installation of micropiles can be achieved using Air Rotary or Mud Rotary drilling, impact driving, jacking, vibrating or screwing machinery
    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.
    is used for various applications.  There are hundreds of mix designs which are tailored to the grouting application.  Typical products in the mix are cement, water, sand, fly ash, bentonites, and admixtures.  Characteristics such as set time, density, and  compressive strength are all adjustable.

    About Company

    We are a DBE/MBE certified contractor with over 30 years experience solving difficult soil and foundation stabilization issues.


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    Work Area

    We are licenesd in Oregon and Washington. Our home base is the Portland Metropolitan area but we have worked throughout both states.

    We do a lot of work along the Oregon coast from Astoria to Brookings.

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