"unprofessionalism" - 1 õppematerjal

Integration of Lean Con. and Building Information Modelling

2 Causes of the problems Many causes for the problems start from client due to reason that client is not a professional. Too much attention is put on price than quality; i.e. contractors (all different specialty contractors) are chosen by the lowest bid. Also poor briefing and definition of the requirements for the project needs and functionalities result in the late changes of the design. It is due to the lack of systematic understanding of construction projects. Not only but also contractors unprofessionalism and incompetent commitment to the project are also issues that cause many problems. 2.2.1 Structural: contractual systems Over time, facilities have become more complex, demanding and variable, resulting in the need to use specialty contractors, now accepted practice. Thus, to manage project-based construction processes, the two most prevalent contracting systems, Design-Build (DB) and Design-Bid-Build (DBB), were developed (see also figure 2.2).