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Civil Capabilities

STI Group is an experienced service provider of civil construction projects.


Project execution


Uncompromising safety

Concrete Services

STI Group is an experienced service provider of civil construction projects. Our civil services are designed to handle all preliminary aspects of site preparation allowing for subsequent phases of construction. Our experience, broad scope of knowledge, dedication to service and quality, and unwavering emphasis on safety will get the project off to the right start.

Civil Construction

Clearing, cleaning and de-mucking Ponds/Ditches and Culverts
Site Improvement/Site Preparation, Clearing & Grubbing
Slope Protection and Slope Stabilization
Excavation and Shaping of Ditches and Containment Ponds and Settlement Basins
Storm Drain and Raw Water Systems
Corrugated Metal Pipe (CMP)
Reinforced Concrete Pipe (RCP)
HDPE Corrugated Plastic Pipe (CPP)
Sub-Grade Preparation and Soil Stabilization
Site Rough Grading and Finish Grading
General and Structural Site Fill and Compaction
Heavy Haul Roads and Other Temporary Construction Access
Permanent Plant Road Construction and Maintenance
Material Storage and Handling Areas
Structural Excavation
Pre-Cast Concrete Structures
Shoring & Deep Excavation
HDPE Piping Systems (Fusion Welded Pipe)
HDPE Firewater, Raw Water, Cooling Water Systems
Cast in Place Concrete
Area Paving and Slab on Grade
Tank Foundations and Ringwalls
Concrete Sumps and Intake/Discharge Structures
Concrete Trenches and Trenwa Trench Systems
Drilled Footings/Caissons
Straight Shaft and Bell Footings
Dry Hole Drilling, Slurry Drilling, Casings (Temporary and Permanent)
Up to 84″ Diameter and 80′ Deep
Pile Caps/Footers/Piers/Pedestals/Pump Foundations
Structural Concrete Columns/Elevated Decks and Elevated Structures
Compressor Structures and Decks
Containment Structures/Cooling Tower Basins
Clarifier Tanks and Water Treatment Structures
Equipment Foundations & Other Complex Foundations