Ensure that all stakeholders understand the method that is used
Bid evaluation process & procedure has to be carefully defined since there are many methods that can be used depending on type of contract and nature of the project.
Before opening of the bids the bid evaluation process, method, timing, team, approval process, etc. is normally described in an bid evaluation procedure. One could consider to share the basic evaluation principles with the bidders for clarity. In public bidding sharing maybe a mandatory regulation.
Evaluation calculation sheets shall be checked in depth in order to ensure all formulas are correct.