TSC maintains a field staff of over 30 Technicians, many with over 10 years of experience. The Technicians are supported
by a staff of Registered Professional Engineers and laboratories. We adhere to the AASHTO R 18 standard practices for construction material testing as well as the ASTM E329 standard specification for companies engaged in construction testing, inspection, or special inspection. We are also IDOT certified. TSC's field Technicians in northern Illinois are represented
by Local 150 of the International Union of Operating Engineers.
Our primary services include: