Business Details
31 Years
experience
Emergency
services
Expert Engineering Solutions for Lasting Structures
WDP & Associates was founded in 1995 with a mission to solve complex engineering challenges through innovation and specialized expertise. Our team has dedicated decades to advancing forensic structural engineering, building enclosure commissioning, and emergency response services, leveraging cutting-edge technology and hands-on problem-solving. We prioritize collaboration, mentorship, and industry leadership, contributing to code development and standards through organizations like ASTM and ACI.With a focus on durability and cost-effective solutions, we serve clients nationwide, combining deep technical knowledge with a commitment to client satisfaction. Our senior staffs direct involvement ensures tailored strategies that meet regulatory, budgetary, and operational goals. Celebrating 30 years in 2025, we continue to uphold our legacy of excellence while embracing new challenges in structural engineering.
Services
Forensic Structural Engineering
Building Enclosure Commissioning
Emergency Response
Geotechnical Engineering
Construction Materials Testing
Details
- Year established: 1995
Highlights and features
- We have over 30 years of experience in forensic structural engineering.
- Our senior engineers lead industry standards development through ASTM and ACI.
- We utilize advanced tools like hygrothermal analysis and non-destructive testing.
- Our team provides 24/7 emergency response for structural failures.
- We offer holistic building science consulting to prevent moisture-related issues.
Associations and certifications
- ASTM
- ACI
- ICRI
- TMS
- WACEL
- AASHTO
What people say
Expertise in structural analysis
24/7 emergency support
Cost-effective solutions
Detailed forensic reports
Industry-leading consultants
Services
Forensic Structural Engineering
We investigate and resolve structural failures in buildings, bridges, and infrastructure. Our engineers use non-destructive testing and advanced modeling to identify causes of damage, such as corrosion or natural disasters. Clients benefit from tailored repair designs and litigation support backed by 30 years of expertise.
Building Enclosure Commissioning
Our team ensures building envelopes meet performance standards through hygrothermal analysis and air leakage testing. We address moisture intrusion, energy efficiency, and durability challenges for new and existing structures. Services include design reviews and field testing to prevent costly post-occupancy issues.
Emergency Response
We provide rapid assessments after earthquakes, hurricanes, and structural collapses. Our certified responders deliver temporary shoring solutions and permanent repair designs. Clients receive time-sensitive mitigation strategies to minimize downtime and ensure safety following natural or manmade disasters.
Geotechnical Engineering
We conduct subsurface exploration and foundation analysis to optimize site utilization. Our on-site engineers perform cone penetration testing and slope stability assessments. Services reduce construction costs by addressing problematic soils and designing cost-effective foundation systems for mid-Atlantic projects.
Construction Materials Testing
Our WACEL-accredited lab tests concrete, steel, and soil samples to ensure compliance. Field inspections verify structural steel and masonry integrity during construction. Clients receive real-time feedback to resolve deficiencies and meet occupancy permit requirements for Northern Virginia projects.
People
J. Eric Peterson
Principal, Chief Executive Officer
With over 30 years in forensic engineering, J. Eric Peterson leads WDPs strategic growth. He specializes in structural failure analysis and code development, contributing to ASTM standards. His expertise ensures client-focused solutions for complex building envelope challenges.
Darryl Keating
Senior Geotechnical Engineer
Darryl Keating directs geotechnical projects across the mid-Atlantic. His work on soil stabilization and foundation design reduces construction risks. He actively participates in industry groups to advance geotechnical best practices for challenging subsurface conditions.
Rex A. Cyphers
Principal, Geotechnical Engineering
Rex Cyphers oversees forensic geotechnical investigations, addressing foundation settlement and pavement failures. His field experience informs cost-effective repair strategies. He mentors junior staff in subsurface exploration techniques and slope stability analysis.
Timothy A. Apisa
Senior Project Manager
Timothy Apisa leads building enclosure projects, focusing on moisture intrusion prevention. He develops hygrothermal models to optimize energy efficiency. His work on historic faade restoration balances preservation with modern performance standards.
Andrew W. Wagner
Senior Associate, Structural Engineering
Andrew Wagner specializes in forensic analysis of concrete and masonry structures. He conducts non-destructive testing to assess structural integrity. His litigation support includes expert testimony on construction defect cases involving bridges and retaining walls.
Questions
What services does WDP & Associates offer?
We specialize in forensic structural engineering, building enclosure commissioning, emergency response, geotechnical analysis, and construction materials testing.
Do you provide emergency structural assessments?
Yes, our 24/7 emergency response team addresses natural disaster damage, collapses, and urgent structural failures across the U.S.
Which regions do you serve?
We operate nationwide with offices in Virginia, New York, South Carolina, and West Virginia, focusing on mid-Atlantic projects.
How do you handle building moisture issues?
We use hygrothermal modeling, air leakage testing, and infrared thermography to diagnose and resolve moisture intrusion in building envelopes.
Are your engineers involved in industry standards?
Yes, our staff contribute to ASTM, ACI, and ASHRAE committees developing codes for structural integrity and building envelope performance.
Can you assist with litigation cases?
We provide expert witness services, including failure analysis and courtroom testimony for construction disputes and insurance claims.
