Business Details
18 Years
experience
Trusted Geotechnical Engineering Solutions
7NT was founded in 2008 by Pratap Rajadhyaksha, a seasoned professional with 45 years of experience in the engineering and construction industry. Our firm specializes in geotechnical drilling, engineering, and construction services, particularly for deep tunnel projects in water/wastewater treatment and transportation sectors. With a team of 65 professionals, we deliver complex projects nationwide, emphasizing integrity, reliability, and performance. Our expertise includes precise geotechnical data collection, laboratory testing, and construction management, ensuring client success through innovative solutions. We prioritize client needs by exploring all avenues to optimize project delivery, making their lives easier through technical excellence.Our track record includes high-profile projects like the DRTC in Indianapolis and the South Hartford Conveyance Tunnel, which achieved significant cost savings for clients. Our proprietary systems and specialized equipment enable accurate data gathering, reducing risks associated with large-scale infrastructure decisions. We maintain AASHTO-accredited laboratories and employ certified personnel for quality assurance, including underground and confined space operations. Our commitment to excellence is reflected in client testimonials praising our knowledgeable team, timely execution, and adaptability to project demands. With decades of combined experience, we continue to set industry standards in geotechnical engineering and construction.
Services
Drilling
Inspection Testing
Engineering
Construction
Laboratory Services
Details
- Year established: 2008
Highlights and features
- We have 45 years of industry experience in geotechnical engineering and construction.
- Our 65-person team specializes in complex drilling and tunneling projects nationwide.
- We utilize proprietary systems for accurate geotechnical data collection and risk reduction.
- Our AASHTO-accredited laboratories ensure precise soil and rock testing.
- Proven track record of delivering projects under budget, including $80M savings in Indianapolis.
Associations and certifications
- AASHTO
- Ohio Department of Transportation
- Indiana Department of Transportation
- United States Army Corps of Engineers
What people say
Knowledgeable, flexible, easy to communicate with
Accurate and timely testing reports
Professional field personnel
Meeting short notice demands
Outstanding qualifications
Services
Drilling
7NT provides specialized drilling services for geotechnical investigations, including soil sampling, rock coring, and packer testing. Our 8 owned drill rigs operate to depths of 450 feet, ensuring precise data collection for tunnel and infrastructure projects. This expertise reduces financial risks by minimizing inaccuracies in critical engineering decisions.
Inspection Testing
We offer quality assurance through construction inspection and materials testing, including underground work and confined space entry. Our AASHTO-accredited labs perform soil, rock, and concrete testing, ensuring compliance with ASTM standards and project specifications for tunnels and infrastructure.
Engineering
Our engineering team specializes in tunnel design, foundation analysis, and ground modification techniques. We collaborate with clients to develop cost-effective solutions for deep tunnel systems in water/wastewater treatment and transportation sectors.
Construction
We execute utility construction projects including manhole repair, sewer line rehabilitation, and trenchless technologies. Our dedicated crews use specialized equipment like the Mr. Manhole system to meet tight schedules for municipal clients.
Laboratory Services
Our accredited labs conduct physical and chemical analyses of soil, rock, and construction materials. Services include triaxial compression testing, permeability analysis, and concrete strength testing to ensure material compliance with engineering standards.
People
Pratap Rajadhyaksha
Founder & Owner
A 45-year industry veteran and MIT graduate, Pratap founded 7NT in 2008 after leading engineering teams at Midwest firms. He specializes in water/wastewater engineering and combined sewer overflow control.
Chase Howard
Registered Professional Geologist
Chase contributes expertise in geotechnical investigations and field data collection, supporting complex drilling projects nationwide.
Chris Harrison
Project Manager
Chris oversees project execution and client coordination, ensuring adherence to timelines and quality standards for tunneling and infrastructure work.
Spencer Fairfax
Professional Geologist
Spencer provides technical leadership in subsurface investigations and laboratory testing, maintaining 7NT's reputation for accurate geotechnical data.
John Trypus
Construction Supervisor
John manages utility construction crews and equipment, specializing in manhole rehabilitation and sewer system upgrades under MSAs.
Questions
What geotechnical services does 7NT specialize in?
We provide drilling, engineering, construction, and laboratory testing for deep tunnel projects in water/wastewater and transportation sectors.
How does 7NT ensure accurate geotechnical data?
We use proprietary systems, specialized equipment, and AASHTO-accredited labs to minimize data inaccuracies that could risk large projects.
What construction projects does 7NT handle?
We specialize in manhole repair, sewer rehabilitation, and tunnel construction under utility MSAs and prime contracts.
What accreditations does 7NT hold?
Our labs are accredited by AASHTO, Ohio DOT, Indiana DOT, and the U.S. Army Corps of Engineers.
How experienced is 7NT's team?
Our 65 professionals include 45-year industry veterans and certified geologists with nationwide project expertise.
