Past Projects

High Mobility Grouting Keeps Historic Fountain from Sinking

Portions of the Catholic Total Abstinence Fountain in Fairmount Park were in “imminent danger,” according to a “Restoration Services” Request for Proposals (RFP) issued by the City of Philadelphia in August 2014. Open voids in the foundation were causing ongoing settlement. Compaction Grouting Services (CGS), a Media, Pa.-based geotechnical contractor, would rise to the challenge

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Bridge Replacement: Limited Mobility Displacement Grouting

Lehigh County, PA – A bridge’s super-structure and certain piers needed to be removed on this bridge replacement project. The purpose of our grouting program was to improve the existing rock conditions beneath piers 1 and 2.  This replacement project required a complete removal and replacement of the bridge’s super-structure, (bridge deck, piers and abutments). 

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Centenary University Baseball Field: Compaction Grouting

Warren County, NJ – Our purpose for this program was to stabilize suspected solution channeling within the footprint of a proposed baseball field and its associated structures. We understood that the proposed construction consisted of a new, synthetic turf baseball field with associated seating, fencing, dugouts, and batting cage structures. Based on the test borings

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Apartment Building: Compaction Grouting

Allentown, PA – The purpose of this grouting program was to improve soil below proposed columns to support a new multi-story apartment building. The engineer recommended using the processes of compaction grouting and soil exchange. The soil exchange process was designed in such a way to allow for the depth of the exchange to be equal

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Valley Forge Apartment Complex: Compaction Grouting

King of Prussia, PA –  This project is a multi-stage projecting occurring over the course of 3 years.  We are currently preparing for the third stage.  This complex consists of multiple condominium buildings and parking garages. This area is notorious for sinkhole development which is why compaction grouting was chosen as the premier method of

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Royal Farms: Compaction Grouting/Sinkhole Remediation

Lancaster County, PA – The purpose of the grouting program was to mitigate future sinkhole activity and reduce the risk of liquefaction of the subsoils below the proposed Royal Farms main building and gas canopy structures. The proposed construction consisted of a single-story, 5,375 square feet Royal Farms building, car wash, and gas canopy with

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Freezer Addition: Compaction Grouting

Seabrook, NJ – The purpose of this grouting program was to improve soft soils pre-construction to minimize settlement of the foundations for a new freezer addition. As per usual, we had to ensure grouting locations were placed considering sand density and suitable soil.  Density can vary within the soil on a project site. Test borings

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Highland Ave. Soil Anchors/Retaining Wall

Bethlehem, PA – The exterior wall of an operating out-patient medical facility had experienced rotation, due to an imbalance of lateral earth pressures (elevated ground floor slab).  The affected wall spanned approximately 170 linear feet.  In order for us to fix the problems, we had to consider several complications associated with the construction and stabilization

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Landis Homes: Compaction Grouting

Lititz, PA – The purpose of the grouting program was to mitigate future sinkhole activity and improve subsoils for foundation support for the proposed Landis Home Community Learning and Wellness Center. The proposed construction consisted of a 3-story structure with a full basement. Based on the results of the test borings, air-track probes, and the

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Quadrant EPP: Compaction Grouting/Sinkhole Remediation

Reading, PA – The purpose of this grouting program was to compact supporting soils and stabilize a suspected sinkhole area within the existing Quadrant EPP facility. We suspected a sinkhole had developed at the east end of the facility. Based on our experiences working in this regional geology, we believed the subsoils consisted of silts

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