Traditional

• Client – at the top
• Engineer – has relationship with client, supervision over the Contractor
• Contractor – has relationship with client, and subcontractors under it
• Subcontractors do not have relationship with client. They go through Contractor

DB/MAC/Concession

• Client - at the top
  • DB, Mac, Concession – under Client
    • Subcontractors - under "DB, Mac Concession"

Integrated Supply Chain

• User – relationship to client
• Main/oper – relationship to client
• Client – deals with prime contractor
• Prime contractor – deals with all key suppliers
• Key Suppliers
  • Subcontractors – deals with manufacturers and designers
  • Manufacturers – deals with subcontractors and designers
  • Designers – deals with subcontractors and manufacturers