“…Subject matter 2 consists of introducing the premisses of Goldratt's theory of constraints (TOC) into the time coupling method (TCM) -the research results are presented in publications [2,5,11,13,14,17,18,22,23]. In TOC, project buffers (PB) and feeding buffers (FB) are introduced into the schedule in order to secure a contractor and project manager from the delay in the date of completing the works.…”