Tennessee (TN) CMC-C Mechanical – HVAC/Refrigeration Contractor Practice Exam

Licensing Laws and Business Management (10-15%)

·       Tennessee Contractor Licensing Requirements

• Understanding classifications and scopes of mechanical contractor licenses.
• Application procedures, including financial statement requirements and monetary limits.
• License renewal processes and maintaining active licensure.

·       Business Structures and Legal Considerations

• Formation of business entities: sole proprietorships, partnerships, LLCs, and corporations.
• Tax implications and liability issues associated with each business structure.

·       Contract Law and Risk Management

• Elements of legally binding contracts and common contractual clauses.
• Mechanics' lien laws in Tennessee and procedures for filing.
• Insurance requirements, including general liability and workers' compensation.

·       Employment Regulations

• Compliance with state and federal labor laws.
• Occupational Safety and Health Administration (OSHA) standards specific to mechanical contracting.

2. Estimating, Bidding, and Financial Management (10-15%)

·       Project Estimation

• Accurate material, labor, and equipment cost estimation techniques.
• Understanding overhead, profit margins, and contingency allocations.

·       Bidding Process

• Preparation of competitive bid proposals in compliance with Tennessee regulations.
• Bid submission procedures and understanding bid bonds.

·       Financial Planning and Control

• Budgeting and cash flow management for mechanical projects.
• Financial reporting and adherence to monetary limits as per license classification.

3. Project Management and Contract Administration (15-20%)

·       Project Scheduling and Coordination

• Utilization of Critical Path Method (CPM) and Gantt charts for effective scheduling.
• Coordination among various trades and subcontractors.

·       Contract Administration

• Interpretation of contract documents, specifications, and blueprints.
• Managing change orders and ensuring proper documentation.

·       Quality Control and Assurance

• Implementation of quality management systems.
• Inspection protocols and compliance with industry standards.

·       Safety Management

• Development and enforcement of site-specific safety plans.
• Regular safety audits and compliance with OSHA regulations.

4. HVAC and Refrigeration Systems Design and Installation (20-25%)

·       Heating, Ventilation, and Air Conditioning (HVAC) Systems

• Design principles for residential, commercial, and industrial HVAC systems.
• Installation practices, including ductwork, ventilation, and air quality control.
• Energy efficiency considerations and compliance with relevant codes.

·       Refrigeration Systems

• Principles of refrigeration cycles and system components.
• Installation and maintenance of commercial refrigeration units.
• Refrigerant handling practices and environmental regulations compliance.

·       Piping Systems

• Design and installation of piping systems for HVAC and refrigeration applications.
• Material selection and pipe sizing calculations.
• Leak detection methods and pressure testing procedures.

·       Electrical Components and Controls

• Understanding electrical wiring and control systems for HVAC and refrigeration equipment.
• Installation of thermostats, sensors, and automated control systems.
• Troubleshooting electrical issues and ensuring compliance with electrical codes.

5. Codes, Regulations, and Standards (15-20%)

·       Building and Mechanical Codes

• Familiarity with the International Mechanical Code (IMC) and International Energy Conservation Code (IECC) as adopted by Tennessee.
• Understanding of local amendments and code enforcement procedures.

·       Environmental Regulations

• Awareness of Environmental Protection Agency (EPA) regulations affecting HVAC and refrigeration systems.
• Proper handling and disposal of hazardous materials, including refrigerants.

·       Accessibility Standards

• Ensuring HVAC system designs comply with the Americans with Disabilities Act (ADA).
• Incorporation of accessibility features in HVAC installations.

·       Energy Codes and Standards

• Compliance with energy efficiency standards and regulations.
• Implementation of energy-efficient system designs and practices.

6. Testing, Adjusting, and Balancing (TAB) (5-10%)

·       System Performance Testing

• Procedures for testing HVAC and refrigeration systems to verify performance.
• Use of specialized instruments for measuring airflow, pressure, and temperature.

·       Adjusting and Balancing

• Techniques for adjusting system components to achieve optimal performance.
• Balancing air and water distribution systems for efficiency and comfort.

·       Documentation and Reporting

• Recording test results and adjustments made during the TAB process.
• Providing clients with comprehensive reports and maintenance recommendations.