Lack of information - Insufficient of data availability about new materials, products, or processes
Lack of ideas - Failure to development new ideas or solutions for the problems
Honest wrong beliefs - Unnecessary costs are often caused by decisions based on what is the decision makers believe to be true, and not on real facts
Temporary circumstances - An urgent schedules may force decision makers to reach a quick conclusion and may lead to a to unsatisfactory delivery
Changes in owner requirements - Frequently, the owner’s new requirements force changes during design or construction that increase costs and revise the schedule
Lack of communication and coordination - Lack of communication and coordination are the leading cause of unnecessary costs
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