Prelims Thickening Calculator
Actual costs, actual rates, over the proved period.
Extended preliminaries costed over the period of delay. Extended and thickened preliminaries build up separately, at actual costs and actual rates: the time-related resources held on site because the job ran longer, and those added by the disruption while the works continued.
What you get
An Excel template with no macros. Only the yellow cells can be edited, the Guide tab explains every step, and it prints on A4. Your contract's terms come first.