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.

STI Group’s Civil Construction Services

• Surveying
• 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

Advanced Surveying Services

Precision is the bedrock of every successful civil construction project, and it begins with advanced surveying services. At STI Group, we leverage cutting-edge surveying tools and technologies like GPS, Total Stations, LiDAR, and drone-based photogrammetry to provide accurate topographic surveys. These tools allow us to create detailed 3D models and layouts that guide project execution. As topographic surveying contractors, our approach ensures accurate alignment, grading, and positioning, minimizing errors and setting a solid foundation for the entire project lifecycle.

Why This Matters: Accurate surveying minimizes costly errors and delays, directly contributing to efficient and successful project completion. It ensures that every subsequent phase of construction is built on a solid foundation.

Pond & Ditch Management Services

Our comprehensive pond and ditch management services focus on maintaining water flow and ensuring environmental sustainability. We employ environmentally-friendly civil construction methods for clearing, cleaning, and de-mucking ponds, ditches, and culverts. This involves techniques that minimize soil erosion and water contamination, ensuring efficient water management and optimal land utilization.

Key Techniques We Use:

• Environmentally-conscious de-mucking methods to protect ecosystems.
• Advanced filtration systems to ensure clean and sustainable water flow.
• Tailored solutions that adapt to each unique site’s requirements.

Site Preparation Contractors and Excellence

Effective site preparation is crucial for the stability and success of any construction project. As professional site preparation contractors, our services include clearing, grubbing, and comprehensive site improvement to remove all vegetation, debris, and unsuitable materials. We use specialized equipment for excavation, grading, and soil stabilization to create a stable base for construction.

How We Do It: Our team begins with a thorough site assessment to understand soil composition, topography, and environmental impact. This allows us to tailor our site preparation methods—such as soil stabilization with geogrids or chemical treatments—to each project’s unique needs, ensuring a stable and safe foundation for construction.

Slope Stabilization and Erosion Control Services

Managing challenging terrains and slopes is a critical aspect of civil construction. Our slope stabilization services and erosion control solutions are designed to prevent landslides and erosion. We employ various techniques such as retaining wall construction, rock bolting, shotcrete, and geosynthetics to stabilize slopes and ensure long-term durability and safety.

Stormwater Management Solutions and Water Management Systems

Water management is at the core of many civil projects, and our stormwater management solutions ensure efficient water flow and sustainability. We design and install robust storm drains and raw water systems using materials like Corrugated Metal Pipe (CMP), Reinforced Concrete Pipe (RCP), and High-Density Polyethylene Corrugated Plastic Pipe (HDPE CPP).

Our use of high-strength HDPE piping systems offers both durability and flexibility, significantly reducing maintenance costs. For projects in flood-prone areas, our designs incorporate state-of-the-art retention basins and percolation systems, effectively managing runoff and reducing flood risks.

Groundwork & Grading Services

Proper groundwork and grading are foundational to the success of any civil construction project. Our professional grading contractors provide comprehensive services, including sub-grade preparation, soil stabilization, and both rough and finish grading. Using state-of-the-art equipment and precision grading techniques, we ensure that the groundwork is solid and the soil is adequately compacted to support heavy loads and withstand environmental changes.

Our Approach: We combine advanced GPS-guided equipment with skilled operators to deliver precise grading and compaction. Our team’s expertise ensures smooth site layouts, proper drainage, and a stable foundation for the entire build, minimizing the risks of future settling or structural issues.

Heavy Haul Road Construction and Infrastructure Access

Creating reliable infrastructure and access routes is essential for smooth project execution. As specialists in heavy haul road construction, we build durable access routes, including permanent plant roads and temporary construction access paths, capable of withstanding heavy machinery and traffic. Our road construction services are engineered for longevity and minimal maintenance, ensuring uninterrupted site operations.

Key Projects: From remote oilfield access roads to permanent plant roads for manufacturing facilities, our infrastructure solutions provide essential support for industrial operations. One standout project involved the development of the Jefferson Transload Oil & Gas Railport in Beaumont, TX. For this project, STI Group constructed heavy haul roads and access routes to facilitate the transportation of crude oil via rail, water, and pipeline. Our team successfully integrated these routes with the existing infrastructure, such as highways and railways, minimizing environmental impact while maximizing road durability and operational efficiency. This project showcases our ability to deliver complex infrastructure solutions that support the critical needs of the oil and gas industry.

Structural Excavation, Shoring, and Deep Excavation Contractors

Complex construction projects often require expert handling of deep excavation and shoring to maintain site safety and integrity. As experienced excavation contractors, STI Group specializes in structural excavation for foundations, trenches, and deep excavation works. Using advanced techniques like slurry drilling, casing installation, soil nailing, and dry hole drilling, we ensure safe and efficient excavation processes.

Challenges Overcome: Deep excavation in urban environments presents unique challenges, such as avoiding damage to nearby structures. Our use of cutting-edge techniques like micro-piling and diaphragm walls enables us to complete projects safely in restricted spaces, minimizing disruption to surrounding areas.

HDPE Piping Installation and Water Systems

We offer a full range of piping and water management solutions, specializing in HDPE piping installation, fusion-welded pipes, and diverse water channels such as firewater and cooling water systems. Our expertise as HDPE piping contractors ensures the design, installation, and maintenance of efficient, sustainable, and high-performing water systems, tailored to meet the unique demands of each project.

Our team utilizes fusion-welding technology for HDPE pipes, which provides superior leak resistance and durability compared to traditional joint methods. This technology is particularly effective in high-pressure environments, ensuring a reliable water supply and reduced maintenance costs over the long term.

Concrete Foundation Contractors and Mastery in Concrete Work

Our concrete services cover a wide range of applications, from area paving and slabs on grade to complex foundation constructions like tank foundations, ring walls, and equipment bases. As experienced concrete foundation contractors, we utilize advanced techniques such as drilled footings, caissons, cast-in-place concrete, and pre-cast concrete structures to deliver durable and robust concrete solutions.

For large-scale industrial projects, foundation integrity is critical. We employ methods such as post-tensioning and high-strength concrete mixes to ensure that our foundations can support heavy loads and withstand harsh conditions, making them ideal for manufacturing plants, refineries, and more.

Retaining Wall Construction and Specialized Structures

For projects that require specialized expertise, STI Group delivers unmatched skill and innovation. Whether it’s constructing compressor decks, containment structures, clarifier tanks, or cooling tower basins, we provide comprehensive solutions including retaining wall construction for slope stabilization and containment. Our team has the experience to tackle unique challenges, delivering structures that meet the highest standards of quality and safety.

Why STI Group for Civil Construction?

• Unwavering Integrity and Reliability: As a leading industrial civil construction company, our commitment to honesty, reliability, and transparency ensures every project is managed with the highest ethical standards.
• Safety-First Approach in Civil Construction: Safety is at the core of everything we do. We follow stringent safety protocols, making us one of the safest civil construction contractors in the industry.
• Experienced Project Execution: With decades of experience as industrial construction service providers, STI Group ensures that every project is completed on time, within budget, and to the highest quality standards.
• Innovative Solutions and Sustainable Practices: Leveraging advanced technology and environmentally-friendly civil construction techniques, we deliver results that exceed client expectations while minimizing environmental impact.

Partner with STI Group for your next civil construction project and experience a blend of technical expertise, quality craftsmanship, and unwavering commitment to excellence.