Total cost as the argument
A difference between estimated and actual cost may raise questions about quantities, pricing, performance, changes and other contributing conditions.
General contractors, subcontractors and construction managers

For contractors
A request for equitable adjustment can bring together the reported change, its administration, and the supporting time and cost information. The content depends on the project record, contract requirements and questions presented.
Adjustment and cumulative-effect questions may involve project records, estimates, allocations, comparisons or other supported analysis. The causal explanation, contributing factors and limitations depend on the facts. The analysis does not adopt a standing preference for component or aggregate methods.
A request for equitable adjustment can address a single change or several events and their supported time and cost effects. Cumulative effects need additional analysis of how the events interacted.

Possible assignment considerations
Set out what occurred and over what period, distinguishing discrete changes from the conditions they created together.
Connect the circumstances to specific additional work, resources or lost efficiency, using records rather than the size of the overrun.
Adjustment and cumulative-effect questions may involve project records, estimates, allocations, comparisons or other supported analysis. The causal explanation, contributing factors and limitations depend on the facts. The analysis does not adopt a standing preference for component or aggregate methods.
State plainly which parts rest on documents and which on reasonable inference, and price them accordingly.
Considerations and limitations
A difference between estimated and actual cost may raise questions about quantities, pricing, performance, changes and other contributing conditions.
Claiming interaction between changes without showing how the work on the ground was actually affected.
Folding well-evidenced items in with speculative ones, which drags the credible parts down with the rest.
Requests for Equitable Adjustment
Also in this practice