your intermediate foundation solution

TENSAR GEOPIER FOUNDATIONSRAMMED AGGREGATE PIER SYSTEMS

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Building in Confidence with Rammed Aggregate Pier Systems

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Intermediate Foundation technology is widely adopted for soil improvement of soft ground, delivering real savings in cost and time. We can help you apply Tensar Technology to improve the bottom line on your project.

Tensar Technology - Proven Practical Solutions and the Know-How to Get them Built

Use Rammed Aggregate Pier systems by

Tensar Geopier to Strengthen Soft Soils.

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The Geopier GP3 System

THE GEOPIER GP3 CONSTRUCTION PROCESS

1.

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Engineered to meet specific soil conditions and loads, the

Geopier GP3 system provides foundation support for

sensitive structures.

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CONSTRUCTION ADVANTAGES ornm58

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The Geopier Impact and Geopier Rampact Systems

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The Geopier Impact and Geopier Rampact systems are efficient and cost-effective Intermediate Foundation solutions for the support of settlement-sensitive structures. Like the GP3 system, both the Impact and Rampact systems create stiff Rammed Aggregate Pier (RAP) elements using patented vertical ramming processes. Where the Geopier GP3 system uses a replacement method, the Impact and Rampact systems use the displacement method, ideally suited for contaminated sites where spoils or overexcavation is not an option. Both systems are extremely cost effective for installations in soils subject to caving because construction is facilitated using patented displacement mandrel, eliminating casing risks. The Impact and Rampact solutions replace massive over excavation and replacement and deep foundations, including driven piles, drilled shafts or augered cast-in-place piles. This high-performing systems provide high strength, stiffness and excellent levels of performance.

APPLICATIONS ornm58 Foundations ornm58 Floor slabs ornm58 Biofuel facilities ornm58 Industrial tanks ornm58 Wind turbines ornm58 Earth retaining walls and slopes

ornm58 Transportation ornm58 Embankments ornm58 Railways ornm58 Liquefaction ornm58 Lateral load resistance ornm58 Drainage to accelerate consolidation process

CONSTRUCTION ADVANTAGES ornm58 No drill spoils reduce project costs especially advantageous in contaminated soils

ornm58 Besides a working platform no site infrastructure required

ornm58 Specific Qualitiy Control program including modulus load tests

ornm58 Environmentally safe and sustainable offering contribution to an improved CO2-balance

ornm58 Clean and rapid installation process ornm58 Accelerated schedules ornm58 Versatile system allows for use in a wider range of structures

ornm58 Reliable and cost effective

DESIGN / PERFORMANCE ADVANTAGES ornm58 Strong and stiff elements ornm58 Excellent settlement control ornm58 High support capacity ornm58 Increased bearing pressure ornm58 Designed for structural support of buildings ornm58 Often results in significant cost savings ornm58 Engineered to meet specific soil conditions and loads

Bogazici ShipyardAltinova, Turkey

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With more than two decades of proven foundationsupport, Geopier systems provide resource-friendly,ecient, and cost eective foundation support.

Wind Park ConstructionPurzien, Germany

Geopier Rampact ConstructionUSA

The Geopier Rampact Construction ProcessThe Geopier Rampact system, like the Geopier Impact system, is a displacement technology. RAP elements provide effective support in relatively shallow deposits of man-made fill and other heterogeneous profiles to depth of approximately 6 m. Through its tapered shape, the Rampact system laterally compacts the matrix soil along the entire profile of the mandrel as the mandrel is driven into the ground. The blunt bottom is then used to compact each lift of aggregate which is introduced through the mandrel as the pier is constructed.

The Rampact system is faster to install and provides higher capacities relative to the displacement Impact system in appropriate soil profiles.

Geopier Impact Construction

The Geopier Impact Construction Process1. A specially designed mandrel and tamper foot is driven into the ground using a strong static force augmented by dynamic vertical impact energy. Depths normally range from 3 m to 14 m, depending on design requirements. A sacrificial cap or other flow restrictors prevent soil from entering the tamper foot and mandrel during driving. The process eliminates spoils and displaces soils laterally, densifying and reinforcing the existing soils.

2. After driving to design depth, the aggregate is fed into a hopper at the top of the mandrel by use of a telehandler. The hollow mandrel serves as a conduit for aggregate placement. The mandrel is then lifted approximately 1 m and then driven back down 60cm, forming a 30 cm thick compacted lift. Compaction is achieved through static

down force and dynamic vertical ramming from the hammer. The process densifies aggregate vertically and the patented bevelled tamper foot forces aggregate laterally into cavity sidewalls. This results in soil improvement, excellent coupling with surrounding soils and reliable settlement control with excellent strength and stiffness.

3. Following installation, the Rammed Aggregate Pier elements support shallow foundations, floor slabs, and reduce liquefaction potential and improve stability support of embankments, walls and storage tank foundations. The footing stresses are attracted to the stiff RAP elements, resulting in engineered settlement control.

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Your local installer is:

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