ACI Committee 121 developed this manual to provide ISO 9001:2000-based quality management system requirements and guidance to the concrete construction industry. Discussion is offered for each clause of theISO 9001:2000, providing advice and construction-specific information that can be used as a reference to either produce a new quality management system compliant with ISO 9001:2000, or to upgrade an ISO 9001:1994 or other quality management system to meet the ISO 9001:2000 requirements. Appendix A, "Model Quality Management System Manual for Designers, Construction Managers, and Constructors," is based on the "NYC MTA Bridges and Tunnels, Engineering and Construction Department," and is recommended for use as a template for any company beginning to write a quality manual.