EARTH RETENTION AND DEEP FOUNDATIONS WHYTERRA.COM

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1 EARTH RETENTION AND DEEP FOUNDATIONS Terra has designed and installed some of the largest earth retention systems in the state. We ll work with your existing set of plans or design and stamp a retention system for you. A STRONG FOUNDATION Terra understands the importance of a strong foundation and we ve built our earth retention and foundation drilling division with that in mind. Our foundation starts with our team of highly qualified and experienced Project Managers and Estimators. Together, Scott, Tony, Eric and Randy have over 90 years of experience in this extremely specialized area of construction. Each is a Professional Engineer with the ability to design your system for you or work with your existing set of plans. Either way, their expertise and ability to offer creative solutions can be an asset to your team throughout all phases of design and construction. EARTH RETENTION: Soil Nails Tiebacks Caissons H-Pile/Lagging Helical Anchors Sheet Piles Underpinning Push Piles Rock Anchors DEEP FOUNDATIONS: Dock Walls Helical Piles Micropiles Pre-boring Driven Piles Drilled Shafts Caissons Experience is essential, but having the right equipment for the job is an absolute necessity. Terra has invested in the very best equipment that the retention and drilling industry has to offer, which allows our skilled union workforce to complete the job on time and within budget. Terra has designed and built some of the largest retention systems in the state. Please visit our website to find out why so many private contractors and state and local agencies have chosen Terra for their projects. EQUIPMENT: Casagrande C6, M9 IMT Track Drill Rigs (AF10, AF120, AF150) Hercules Machinery Sonic Side Grip (Excavator and Crane Mounts) TEI Remote Control Tieback/Soil Nail Drills 35 Excavator Mount CFA Drill WHYTERRA.COM

2 DOCKWALL Hallett Dockwall in Duluth, MN Installed 80 tiebacks approximately 120 feet long to reinforce the existing wall. The dock is used by several shipping companies on Lake Superior. H-PILE & LAGGING Union South Foundation Earth Retention at the University of Wisconsin Madison 175 H-Piles and tiebacks were used for the new foundation. Retention depth reached 35 feet under the existing groundwater table. Much of the earth retention was used as the concrete form for the new foundation walls and alignment of H- Piles were critical. DRILLED SHAFTS Tower Foundation in Hancock, WI 6-foot diameter drilled shafts at 40 feet deep for a new cell tower location. Shafts are drilled under a slurry mix to stabilize the hole under caving soil conditions.

3 MICROPILES Camp Randall Players Tunnel Micropiles at the University of Wisconsin Madison 50 Micropiles were installed to temporarily hold the existing column loads to install a player s access tunnel below the football stadium. After the tunnel was constructed, the column loads were permanently transferred to the Micropiles. MICROPILES Charter St. Power Plant in Madison, WI Micropiles were used to permanently transfer the load of the existing building below the new power plant addition. 30 Micropiles for the addition to the Charter St. Plant. Micropile loads ranged from 120 to 180 kips.

4 ROCK ANCHORS Rock Anchors in Shorewood, WI Installation of 120 kip Rock Anchors from a barge. The anchors were used to expand the existing deck overhanging the water. SHEET PILING Flood Control Sheeting in Beaver Dam, WI Installed 15,000 square feet of sheeting along the Beaver Dam River. The sheeting was installed to prevent flooding of existing homes and businesses.

5 HELICAL ANCHORS Delmonte Equipment Pad Installed inside the existing plant for an equipment pad. 20 Helical Anchors installed under low overhead conditions with electric powered equipment to prevent any type of exhaust fume contamination in the plant. PILE DRIVING Pipe Pile Driving Softball Complex at the University of Wisconsin Madison 140 Driven Pilings for the foundation of the Univeristy of Wisconsin Softball Complex. The foundation was built on subsoils with 60 feet of marsh material below. UNDERPINNING Underpinning Existing Biochemistry Building at the University of Wisconsin Madison Several buildings were underpinned permanently to transfer the building load below the new addition. The building in the foreground was built in 1904 and the underpinning extended to 46 feet below grade.