Business Details
50+ Years
experience
Emergency
services
Trusted Geotechnical & Materials Testing Services in Southern California
Sladden Engineering has been a trusted leader in geotechnical and materials testing services since 1959, delivering comprehensive solutions across Southern California. With over 65 years of combined experience, our team of qualified professionals has successfully completed more than 100,000 projects for diverse clients including private developers, public agencies, and utility companies. Our commitment to quality assurance and client collaboration ensures projects are completed on time and within budget, supported by state-of-the-art laboratory facilities in Beaumont and Los Angeles. We specialize in geotechnical investigations, environmental assessments, and specialized inspection services for residential, commercial, and infrastructure developments. Our expertise extends to seismic design, slope stability evaluations, and materials testing for concrete, steel, and masonry.With multiple office locations, we provide localized service while maintaining industry-leading standards through certifications from Caltrans and adherence to ASTM and California Building Code requirements. Our corporate philosophy emphasizes teamwork, technical excellence, and adaptability to address unique project challenges. Clients benefit from our deep understanding of Southern California's geological complexities and our dedication to transparent communication throughout every project phase. This enduring focus on reliability and innovation has made us a preferred partner for thousands of successful developments across diverse sectors.
Services
Geotechnical Investigation
Materials Testing
Special Inspection
Seismic Design
Slope Stability
Environmental Assessment
Foundation Design
Pavement Recommendations
Utility Infrastructure
Recreational Development
Details
- Year established: 1959
Highlights and features
- We offer 65+ years of specialized geotechnical engineering experience in Southern California
- Our team includes Caltrans-certified technicians and multi-office local support
- We provide comprehensive services from seismic design to materials testing compliance
- Our state-of-the-art Beaumont laboratory enhances testing capabilities and turnaround times
- We maintain strict adherence to ASTM, CBC, and ICBO industry standards
Services
Geotechnical Investigation
Our geotechnical investigations assess soil properties and subsurface conditions to ensure safe, code-compliant construction. We evaluate slope stability, liquefaction potential, and seismic risks while providing tailored recommendations for foundation design and earthwork specifications. This critical analysis helps prevent structural failures and costly remediation in residential, commercial, and infrastructure projects.
Materials Testing
We conduct comprehensive materials testing for concrete, steel, masonry, and soil to verify compliance with ASTM standards and building codes. Our accredited laboratory performs strength testing, composition analysis, and quality control assessments to ensure structural integrity across construction projects. These services support special inspections for critical structural elements during all project phases.
Seismic Design
Our seismic design services address California's unique geological challenges through advanced fault analysis and ground motion modeling. We develop customized mitigation strategies for earthquake-resistant foundations and structural systems, incorporating current UBC and CBC requirements. This expertise ensures buildings and infrastructure can withstand seismic events while maintaining regulatory compliance.
Special Inspection
We provide certified special inspection services for structural components including concrete, steel, and masonry work. Our technicians verify construction practices meet approved plans and building code requirements through field observations and testing. These inspections document compliance for regulatory agencies and help maintain structural integrity throughout the construction process.
Slope Stability
Our slope stability evaluations analyze terrain characteristics to identify potential landslide hazards and recommend mitigation measures. We assess soil composition, groundwater conditions, and seismic factors to develop grading plans that ensure safe, stable development on challenging topography for residential, commercial, and infrastructure projects.
Questions
What geotechnical services do you offer for residential developments?
We provide complete geotechnical investigations, foundation design recommendations, and special inspections for single-family homes through large master-planned communities.
Do you handle commercial and industrial construction testing?
Yes, we offer comprehensive materials testing and special inspection services for commercial buildings, shopping centers, and industrial facilities across Southern California.
Are your technicians certified for construction inspections?
Our field personnel hold multiple Caltrans certifications and follow ASTM/ICBO standards for structural concrete, steel, and masonry inspections.
How does your emergency response service work?
We provide rapid-response geotechnical assessments and remediation recommendations for urgent slope stability, foundation failure, or seismic event situations.
What laboratory capabilities do you have?
Our Beaumont facility offers advanced materials testing including concrete strength analysis, soil composition testing, and structural component evaluations meeting all regulatory standards.
