Time in infrastructure construction projects has always been a fundamental issue as early as from the inception of a project, during the construction process and often after the completion and delivery. In a typical construction contract time related matters such as the completion date and possible delays are among the most important issues that are dealt with by the contract provisions. In the event of delay there are usually provisions for extension of time award to the contractor with possible reimbursement for the extra cost and expenses caused by this extension of time to the contract duration. In the case the contractor is not entitled to extension of time, the owner will be possibly entitled to amounts as compensation for the time prohibited from using his development. Even in the event of completion within the time agreed, under certain circumstances a contractor may have claims for reimbursement for extra costs incurred due to induced acceleration measures he had to take in order to mitigate disruption effects caused to the progress of the works by the owner or his representatives. Depending on the size of the project and the agreement amount, these reimbursement sums may be extremely high. Therefore innovative methods with the exploitation of new technologies for effective project management for the avoidance of delays, delay analysis and mitigation measures are essential; moreover, methods for collecting efficiently information during the construction process so that disputes regarding time are avoided or resolved in a quick and fair manner are required. This paper explores the state of art for existing use of Building Information Modelling (BIM) and Unmanned Aerial Vehicles (UAV) technologies in the construction industry in general. Moreover the paper considers the prospect of using BIM technology in conjunction with the use of UAV technology for efficient and accurate as-built data collection and illustration of the works progress during an infrastructure construction project in order to achieve more effective project management, record keeping and delay analysis.

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The main objectives of this paper are to determine the main causes of delays that occur in construction projects in Cyprus and their effects, and suggest measures that can assist in their effective control and reduction. Seeing that no relevant work has been undertaken for the case of Cyprus, a detailed literature review was carried out to identify the most significant causes of delay at the international level. Based on the review, a survey questionnaire was distributed to members of the construction industry of Cyprus. The analysis of the results indicated variations requested by the client, mistakes and missing information from consultants’ drawings, and low productivity and inadequate programming of works from the contractor’s side to be the main causes of delay. By considering the delay causes analysis specific mitigation measures are proposed that are mainly related to the programming of the works, work progress and productivity monitoring, and the appointment process of the parties involved in a construction project.