D'Appolonia Engineers
We create foundations for the future.
About the firm
D'Appolonia Engineers is a Pittsburgh-area civil, geotechnical, and environmental engineering consulting practice founded in 1956. It serves industrial and governmental clients in the United States and internationally, offering core capabilities in civil and geotechnical engineering, geology, and hydrology and hydraulics. More than 60 years of close client partnerships underpin the practice, with a significant share of work coming from long-term repeat relationships.
- Established
- 1956
- Firm type
- Civil Engineering · Geotechnical Engineering · Environmental Engineering
Capabilities
Geotechnical Engineering
Site geotechnical exploration, foundation design, geotechnical analyses, and construction monitoring for industrial, commercial, infrastructure, and government projects.
- Foundation Design
- Site Geotechnical Exploration
- Instrumentation
- Seepage and Geotechnical Analyses
- Anchor System Design
Dam and Waterway Engineering
Full lifecycle dam engineering services covering more than 200 projects on earth and concrete-gravity dams, including design, rehabilitation, inspections, and regulatory compliance.
- Site Selection and Feasibility Evaluation
- New Dam Design and Permitting
- Dam and Spillway Rehabilitation
- Potential Failure Modes and Risk Analyses
- Dam Inspections
- Dam Breach Analyses and Flood Routing Studies
- FERC Part 12
- Emergency Action Plans
Civil Engineering
Civil site services for industrial, commercial, healthcare, and educational facility development.
- Site Layout and Grading Plan Preparation
- Stormwater System Design and Management
- Erosion and Sedimentation Control
- Site Utility Design
- Roadway and Parking Lot Design
- Permitting
- Demolition Plan Preparation
- Site Surveying and Reconnaissance
- Cost Development and Scheduling
- Funding Assistance
Hydrology and Hydraulics
Comprehensive hydrological evaluations and hydraulic design to manage water resources, flood risks, and shoreline protection.
- Hydrologic and Hydraulic Evaluations
- Flood Studies
- Shoreline and Channel Protection System Design
Industries
Mining · Electric Utilities · Industrial · Healthcare · Education · Transportation · Government · Water Resources · Research Facilities · Parks & Open Space · Sports & Recreation
Projects
No projects listed yet.