DOTQS conducts audits to evaluate the readiness of suppliers in the prestressed-concrete sector.

Suppliers are assessed for compliance with standard quality management system requirements. Successful suppliers must demonstrate technical and management system compliance with PCI-MNL-116 Manual for Quality Control for Plants and Production of Structural Precast Concrete Products and PCI QSM1 Preparation Guidelines for a Quality System Manual of a PCI-Certified Plant.

DOTQS conducts assessments for state departments of transportation, such as Michigan MDOT, that include state-specific requirements from project-specific requirements, as well as special provisions and construction specifications.