One of the most difficult problems in construction having to take an objective decision,
especially when selecting contractors. The decision making process is both complicated and
time consuming (due to the complex nature of construction projects). Many experts, with
extensive knowledge of the Construction Industry, take subjective decisions, related to verbal
methods of decision making. The previously mentioned difficulties mainly relate to the creation
of a relevant criteria set, answering the decision makers questions. A proper criteria set and
mathematical tools (like computer calculation algorithms with multi-criteria analysis) could
significantly improve objective decision making. The authors present a case study – selection
of contractors – with detailed calculations of AHP method.
