A cabinet manufacturing company is planning to introduce a new model of cabinets which requires the following tasks:

The wheels are mounted after they are prepared. The base cannot be attached until the sides are assembled and the wheels mounted. The top cannot be attached nor the brackets inserted until the sides are assembled.
The shelves are inserted after the brackets are installed. The back panel is attached after the base and top are attached. The doors are attached after the shelves are inserted and the top and base are attached. The unit is painted after the back and doors are attached.
(i) Identify the immediate predecessors of each task and draw the network.
(ii) Find the critical path (s), and list the critical activities.
(iii) Obtain the earliest and latest start and completion times of all the activities and their total, free and independent floats.

Transcribed Image Text:

Task A Description Prepare the wheels Task Time (minutes) 10 B Mount the wheels 5 CDEFGH Assemble the sides 15 Attach the top 11 Attach the base Insert the brackets Insert the shelves 10 5 Attach the doors Attach the back panel Paint the unit 10 10 15 5005