- Advantage Tech
- Binkley & Barfield
- Birkhoff Hendericks & Conway
- Bucher Willis & Ratliff Inc
- Campos Engineering Inc
- CURTAIN Wall Design & Cnsltng
- David C Dick Consulting
- Desman Associates
- Figg Bridge Engineers
- Hogan Corp
- Hunter Associates Texas LTD
- Intertech Design Inc
- Lexington Group Intl Inc
- Mc Lelland Engineering Co
- Montgomery Watson
