This case study is for a small 3 houses project. The main segments of a single house, the responsibilities, and the logical relationship are identified as follows: - 11 work packages are involved: A and B (civil work, substructure), C, D, E, and F (civil work, superstructure), G (electrical, interior), H (electrical, exterior), I (mechanical, HVAC), J (mechanical, elevator), and K (mechanical, plumbing). Substructure is supervised by Ahmed (activity A), and Ali (activity B). Superstructure is supervised by Hossam (activities C and F) and Mona (activities D and E). All electrical work is supervised by George. - HVAC and plumbing are supervised by Adam; elevator work is supervised by Samy. - Activities E and F follow activity B. - Activity C precedes activity G. Activity I follows the completion of activity E. The predecessors to activity K are activities H and I. Activity D follows activity A and precedes activity H. Activity J is preceded by activities F and G. It is required to create a WBS and OBS chart