Business Details
50+ Years
experience
Trusted Geotechnical Engineering Solutions Charleston SC
Soil Consultants, Inc. has been delivering geotechnical engineering and construction materials testing services since 1951. As a woman-owned firm based in Charleston, South Carolina, we specialize in geotechnical engineering, nondestructive testing, and contract drilling across South Carolina, Georgia, and North Carolina. Our team of certified engineers, technicians, and inspectors maintains technical excellence through continuing education and project experience, adhering to AASHTO and USACE standards.Certified as a disadvantaged business enterprise by SCDOT, we prioritize integrity, open communication, and budget adherence while serving diverse sectors including healthcare, education, and infrastructure. With stewardship from M. Brian Johnson since 2001, we combine 70+ years of experience with modern methodologies to deliver technically sound solutions on time and within budget.
Services
Geotechnical Engineering
Construction Materials Testing
Special Inspections
Nondestructive Testing
Contract Drilling
Details
- Year established: 1951
Highlights and features
- 70+ years of geotechnical engineering expertise since 1951
- AASHTO-accredited materials testing laboratory with 20+ certification categories
- Certified welding inspectors and ICC-certified special inspectors on staff
- Mobile radiography capabilities with on-site film development
- Woman-owned business meeting SCDOT subcontracting diversity goals
Associations and certifications
- AASHTO
- USACE Lab
Services
Geotechnical Engineering
Our geotechnical engineering services reduce construction risks through subsurface exploration, laboratory testing, and engineering evaluations. We provide foundation design, seismic analysis, and pavement rehabilitation solutions for commercial, infrastructure, and residential projects. Our AASHTO-accredited lab analyzes soil properties to create site-specific engineering solutions that enhance project safety and longevity.
Construction Materials Testing
We offer comprehensive materials testing for quality assurance in construction projects. Our AASHTO-certified lab tests aggregates, asphalt, concrete, masonry, and metals to verify material properties and compliance with specifications. Field testing services monitor construction quality, ensuring adherence to project requirements through specialized inspections and laboratory analysis.
Special Inspections
Our ICC-certified inspectors ensure compliance with International Building Code requirements for concrete, steel, masonry, and wood construction. We perform reinforcement placement verification, fireproofing thickness testing, and structural steel inspections to guarantee code compliance throughout the construction process.
Nondestructive Testing
Our ASNT-certified technicians provide radiography, ultrasonic testing, and magnetic particle inspection services to verify weld integrity without damaging materials. With in-house radiography facilities and mobile capabilities, we ensure structural compliance while maintaining project timelines and safety standards.
Contract Drilling
We perform land and water-based drilling services using truck-mounted, track-mounted, and specialized rigs for challenging environments. Our capabilities include soil sampling, rock coring, and instrumentation installation to support geotechnical investigations and environmental monitoring projects across diverse terrains.
People
M. Brian Johnson
President
Leading Soil Consultants since 2001, M. Brian Johnson oversees operations with 20+ years of geotechnical engineering experience. He maintains technical excellence while expanding service capabilities to meet evolving industry standards.
Wm. Kenneth Johnson
Founder
Professional Engineer and founder of Soil Consultants, Wm. Kenneth Johnson established the firm's reputation for excellence during his 50-year leadership. His legacy continues through the company's commitment to technical integrity.
Questions
What geographic areas do you serve?
We provide services throughout South Carolina, Georgia, and North Carolina with specialized equipment for challenging terrains.
Are your testing facilities accredited?
Our laboratory holds AASHTO accreditation across 20+ testing categories and USACE validation for materials testing.
What certifications do your staff hold?
Our team includes ICC-certified special inspectors, ASNT Level III NDT technicians, and AWS-certified welding inspectors.
What drilling capabilities do you offer?
We operate truck-mounted, track-mounted, and specialized rigs for land, near-shore, and difficult-access drilling projects.
Are you a certified woman-owned business?
Yes, we're certified as a Woman-Owned Business Enterprise by Charleston County and the City of Charleston.
What construction materials do you test?
Our AASHTO-certified lab tests aggregates, asphalt, concrete, masonry, metals, and soils for commercial and infrastructure projects.