The activity schedule IS the contract sum. Build it properly. WBS hierarchy, CE adjustments, payment tracker, dashboard.
Working activity schedule for NEC3 / NEC4 ECC and ECS contracts under Options A, C, E or F. Three-level WBS (Phase > Work Package > Activity), CE adjustments register, payment tracker calculating Price for Work Done to Date per cl.50.3, dashboard with phase breakdown. Generic — for Contractor or Subcontractor.
