RFI Types

1. Design Information & Coordination
   • Missing details
   • Conflicting drawings
   • Specification conflicts
   • Discipline coordination
   • Design clarification
2. Constructability & Means/Methods
   • Constructability concerns
   • Alternative construction approaches
   • Temporary works
   • Access constraints
3. Existing Conditions & Field Conflicts
   • Utility conflicts
   • Differing site conditions
   • Existing structures
   • Survey discrepancies
   • Unknown obstructions
4. Geotechnical & Environmental Conditions
   • Soil conditions
   • Rock excavation
   • Groundwater
   • Contamination
   • Environmental constraints
5. Construction Sequencing & Coordination
   • Phasing
   • Staging
   • Traffic control
   • Work interfaces
   • Schedule conflicts
6. Materials & Procurement
   • Material substitutions
   • Product availability
   • Lead times
   • Supplier issues
   • Approved equals
7. Scope & Contract Requirements
   • Scope clarification
   • Contract interpretation
   • Responsibility allocation
   • Deleted scope
   • Quantity discrepancies
8. Owner / Stakeholder Requested Changes
   • Program changes
   • Operational requirements
   • Value engineering proposals
   • Owner-directed modifications
9. Regulatory & Third-Party Requirements
   • Permit conditions
   • Agency comments
   • Railroad requirements
   • Utility owner requirements
   • Code compliance
10. Quality, Testing & Acceptance
    • Inspection requirements
    • Testing procedures
    • Acceptance criteria
    • Certifications
    • Warranty requirements