Building Systems Consulting Engineers specializing in mechanical, plumbing, fire protection and electrical engineering. Building Commissioning Services for LEED projects. LEA's staff is a diverse group of professionals with extensive engineering experiences. Our success at "forward thinking" planning, integrating people and environment, and ensuring quality control through various processes make us able to provide complete design documents at a reasonable fee.

Serviced Areas

  • Pennsylvania, Ohio, West Virginia

Contact Details

  Person David W. Crossey
  City Pittsburgh, PA
  Zip Code 15238
  Address 700 Blaw Avenue
  Phone Number (412) 423-2660

Business Representative

David W. Crossey


As Vice President of LEA, Dave has over 30 years of experience in managing the electrical, HVAC, plumbing, fire protecting and structural portions of many diverse projects. He is responsible for the coordination of all designs, specifications, and construction supervision for all projects at LEA. His management, interdisciplinary experience and focused coordination of individual disciplines ensure the successful completion of our clients' projects.