We run a testing facility and maintain a range of licensing and certifications
Underwood Engineering Inc.
Welcome to Underwood Engineering Inc., where we blend expertise with dedication to deliver top-tier geotechnical engineering and material testing and inspection solutions tailored to our clients' needs
Serving New Jersey, Philadelphia & Delaware Areas Since 1978
Who We Are & What We Do
Underwood Engineering encompasses geotechnical engineering, geo-structural design, construction observation and testing, and laboratory material testing. Our team of experts offer a comprehensive range of solutions, from traditional methods to cutting-edge innovations. We aim to foster close collaboration and due diligence, to deliver practical, efficient, and cost-effective solutions that meet the needs of our clients.
Structural Soil
Foundation Services
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Mobilization of Drilling Soil Borings
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Laboratory Testing
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Foundation Design
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Foundation Evaluation
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Soil & Structure Interaction
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Soil Improvement
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Slope Stability Analysis
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Pavement Reduction & Design
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Retaining Wall Design
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Site Feasibility Studies
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Geological Site Assessment
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Settlement Analysis
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GPR Scanning
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Windsor Probe Testing
Third Party Materials & Testing Services
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Soil Testing & Inspection
Concrete Testing & Inspection -
Masonry Testing & Inspection
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Laboratory Control Curve Testing
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Sieve Analysis
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ACI Certified Testing
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Reinforcing Steel Testing & Inspection
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Pre-Cast Concrete Fabrication
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Floor Levelness/Flatness Inspection
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Compressive Strength Analysis
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Clean Fill Testing
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Concrete & Asphalt Coring
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Compressive Mortar Cube Testing
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Bituminous Concrete Testing
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Multi-Disciplinary Inspections
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Deep Foundation Inspections
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Structural Steel Inspections
Certified Welding -
Non-Destructive Steel Testing
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Fireproofing
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EIFS Inspection
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Wood Framing
Stormwater Management Investigation Services
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Double Ring Infiltration Testing
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Permeability Testing
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Hydrometer Analysis
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Test Pit Inspection
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Dewatering Evaluations
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Groundwater Observation
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Karst Studies & Sinkhole Repair
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Estimated Seasonal High/Water Table
Our Engineering Expertise
Our Commitment
Underwood Engineering Inc. is a family-run firm known for excellence in materials testing, inspections, and geotechnical engineering. Since 1978, we have proudly served New Jersey, Pennsylvania, and Delaware, ensuring quality and trust in our projects.
Our Certifications
We are backed by a team of certified technicians and licensed engineers, who deliver reliable, standards-compliant solutions across a wide range of disciplines, and ensure high-quality service with expert insight for every project.
ACI - ICC - DCA - DPMC - Penn Dot - Primavera (P6) - AASHTO - ASTM
OSHA 30 - OSHA 10 - Troxler Nuclear Density - Radioactive Materials License
Valued Collaborations
Our Partners
We collaborate with leading firms in the engineering and construction sectors to enhance our service offerings. Our partnerships ensure that we bring the latest technologies and best practices to every project.
