To avoid a faulty design, the design team must not only fully understand the client's needs, but also establish an efficient communication scheme between the designers. Inadequate schedule planning often appears in projects with tight timelines, resulting in some schedules being reduced to meet the project timeline and is perceived as another related risk by planners. In accurately estimating costs there is another risk related to designers/consultants which often results in a deviation of the estimated cost from the actual cost. Inadequate site information, such as soil test results, investigation report etc., can also lead to unexpected risks of project delays and costs