COMPACTION GROUTING

Compaction Grouting or Soil Stabilization is done by pumping cement into the ground through steel casing under pressure to fill the voids or pores in the limestone. Once the voids or pores are filled, then compaction of the upper soils will be done, by compressing the soil with the cement. Starting at the limestone area, the steel casing will be extracted, while pumping to compress the soil from limestone to the surface.

This is completed by doing the following the steps:
L.R.E. will use its state of the art drill rigs which were designed to work in all types of areas to drill down to limestone utilizing three inch diameter steel casing - (these are called grout injection points). Once the grout injection points are installed, L.R.E. will then have a pump crew mobilize to start pumping the cement through each injection point, one by one, until all of the injection points are completed.

SHALLOW - SURFACE COMPACTION

Shallow- Surface compaction is done by pumping cement into the upper 5' to 10' soils. This is designed to permeate the upper soils to compact them. This is completed by installing small diameter steel casing up to 1.25 inches. Using the small casing, L.R.E. will inject portland-based cement grout under low pressure and low volume to prevent damage to the structure. L.R.E. can also use chemical grouting, which can be either epoxy or polyurethane resin for shallow-surface compaction projects.

SLAB JACKING

Slab Jacking is done to fill voids between the slab of the structure and the soils that lay beneath the structure with cement. Once the void is filled the slab can sometimes be lifted to its original state without the need for additional work.

This is done by coring a 4" hole into the slab, and installing a grout injection plug into the hole. Once the cement is injected through the plug and the slab is lifted, the cement has hardened, and the plug will then be removed. Finally, L.R.E. will smooth off the injection hole with cement.

UNDERPINNING

Underpinning or Pin Piles are installed to repair structures that have been damaged or have settled. Certain circumstances that may require a structure to be re-leveled or re-supported are sinkhole activity, buried organics, muck, clay shrinking, plumbing problems, etc.

L.R.E. uses the Grip-Tite® Foundation Pier System for all its Underpinning/Pin Pile projects. L.R.E. gives a limited Life Time Warranty on its Grip-Tite® pier system for its material and workmanship.

Underpinning/Pin Piles are installed by excavating the soil below and around the foundation, then inserting the Grip-Tite® Foundation bracket underneath and against the structure's foundation. Once the brackets are in place, a 3" steel casing is hydraulically advanced to limestone or other bearing strata. After all the piers have been installed, leveling rams are installed on each pier to lift the structure back to its original state. Finally the weight of your home, anchored to the steel brackets, is carefully transferred from unstable soil to rock-solid piers so your home or commercial building is secure with the pier system permanently in place and hidden from view. L.R.E. is an authorized Grip-Tite® dealer and is thoroughly trained and certified in the installation of the Grip-Tite® Foundation Pier System and is supported by Grip-Tite® Manufacturing Company's over 60 years of earth and anchoring experience. Grip-Tite® Manufacturing Co., Inc., warrants all components to be free of defects in materials and workmanship for a period of one year.

Grip-Tite® tubes have an OD of 3 to 4 inches. The tubes have a minimum tensile strength of 80,000 pounds per square inch (psi) and a minimum yield strength of 70,000 psi. The system's angle bracket assembly has an ultimate weight capacity of 96,700 pounds. The bracket assembly with push tube has an ultimate capacity of 72,500 pounds.

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10 WAYS TO TELL IF YOU NEED THE
     

        1. Windows and doors are sticking, hard to open
        2. There are large gaps in window and door frames
        3. Interior plaster walls are cracking
        4. Multiple nail pops are appearing in ceilings and walls
        5. Walls are beginning to lean noticeably
        6. Windows and/or door trim are developing spaces
        7. Floors are starting to settle and become uneven
        8. Chimneys are tilting or leaning
        9. Foundations are sinking
        10. Cracks can be seen in foundations or basement walls

INJECTION PIERS

Injection Piers are underpins that have several 1½" openings in the steel casing. The openings allow L.R.E. to pump grout through the casing to permeate the soil surrounding each pier. This will give the underpins more stability and be able to compress and compact the soil surrounding each underpin.

PRE-CONSTRUCTION PIERS

Pre-Construction Piers are used when building new structures to prevent settlement problems due to buried organics, clay, muck, etc... Pre-Construction piers are used to get below these types of materials, and allow the structure to bear on a more stable soil.

Pre-Construction piers are installed by using a type of drill rig that will advance the pier to a more competent bearing strata. Each pier is installed where the structure foundation or bearing walls will be placed during construction, so that the structure will not be affected by the upper material.

HELICAL PIERS

Helical Piers are piers that have different size Helical Plates welded to the steel casing. The Helical Pier is mechanically rotated into the soil. Once installed, the pier has bearing capacity in both tension and compression in the subsurface by transferring the structure's load to a bearing stratum.

This type of Pier can be used for underpinning existing structures that have been damaged due to settlement. Unlike conventional underpinning, Helical Piers do not always have to go as deep, as long as the pier's Helical Plates are below the active zone which is causing damage.

This type of pier can also be used as "tie backs". The Helical Pier is installed to prevent movement of retaining walls, sea walls, etc. This is done by installing the Helical Pier on an angle through an existing wall or new construction wall to a depth where a degree of pressure is reached for an ultimate bearing capacity. Finally, a wall plate is installed to the pier and attached to the wall which will prevent any further lateral movement.

CHEMICAL GROUTING

Chemical grout is a two part polymer used for re-leveling interior slabs, or for shallow grouting around exteriors of structures to stabilize shallow soils.

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