Facility planning and design

2. For the following problem, find the activity network diagram, total duration and critical path. The City Commission of Nashville has decided to build a botanical garden and picnic area in the heart of the city for the recreation of its citizens. The precedence table for all the activities required to construct this area successfully is as follows: Code Activity A Planning B Purchasing Excavation Sawing E Placement F Assembly G Infill H Outfill Decoration Time (in hours) 20 60 102 30 20 12 22 10 32 Immediate Predecessor(s) None Planning Planning Purchasing Sawing, Excavation Placement Assembly Assembly Infill, Outfill