Founded in 1985 as a fire protection engineering firm, PDI provides a full spectrum of fire protection engineering services including sprinkler and fire alarm design, smoke modeling, and performancebased designs offering innovative solutions to complex fire and life-safety challenges. In addition, PDI provides consulting services for fire, building, and life-safety codes, including plan review and the issuance of commodity letters. PDI also provides government third-party plan review services on behalf of local, state, and federal agencies. In addition to its engineering and consulting services, PDI, through its Permitting Section, assists its clients in negotiating the complex project permitting process, managing that process from initial application, through all necessary inspections, to final certificate of occupancy. PDI’s Services Include: • Building, Fire, and Life Safety Code Consulting • Fire Hydrant Flow Testing and Water Distribution System Modeling • Fire Protection Systems Design, Testing, and Evaluation • Permit Submittal Coordination and Management • Structural Heat Transfer, Fire Growth, and Smoke Modeling • Fire Investigations and Litigation Support • Access Control • CCTV Security Systems • Security System Engineering • Security Audits and Risk Assessments • Hazardous Materials Evaluation and Commodity Classification • GSA Life Safety Evaluation • DoD Life Safety, Sprinkler, Fire Alarm, and Mass Notification Design