A hypothetical scenario exists whereby X5 sectional completion applies (call it section A) and LDs are set at 1000/day for both sectional completion and for the whole of the works (sections A+B). Assume section B is completed satisfactorily but section A extends beyond the completion date for the whole of the works, would this incur double liquidated damages for exceeding both X5 & contract completion date
Looking at both the X5 and X7 clauses as well as the standard entry in the Contract Data part 1 of both NEC3 and NEC4, I believe the answer is ‘No’.
This is because you would have section A with stated damages and then section B would, in effect be “The delay damages for the remainder of the works are …” with the remainder not being section A. I.e. the damages are expressed as being independent of each other.