Using the information in the figures below, develop a precedence notation CPM network for the bridge project described. Certain logical relationships are implied by the bar chart that has been supplied to you by the field superintendent who has been chosen to run the job. According to contract specifications your company must submit a net$-$ work scheduling $($CPM$)$ to the owner. Knowing that you are a CPM expert, your boss has given you the job of setting up the network. He or she also has asked you to calculate the project duration in working days. The duration of each activity can be developed from the dates given on the bar chart.

Mobilization and procurement activities are as follows:

$\backslash$table$[[$Act$,$Duration,Description,Followers$],[1,10,\backslash$table$[[$Shop drawings,$],[$abutment$,$ and deck steel$]],11],[2,5,$Shop drawings, foot steel,$6],[3,3,$Move in$,7,8],[4,15,$Deliver piles,$9],[5,10,$Shop drawings, girders,$26],[11,15,$Deliver abutment and,$16],[6,7,$deck steel,$12],[26,25,$Deliver footer steel,$28]]$

Bar chart schedule for bridge project

$($based on an example in Clough and Sears, Construction Project Management$).$

There is only one excavation crew.

There is one set of formwork material for footers and abutments.

Project duration should be approximately $65$ days long.

General sequence of activities Excavation, piles driven, footer, abutment, and deck

Forming, pouring, curing, and stripping

To calculate the workdays from the bar chart, assume June $17$ is a Thursday. Workdays are Monday through Friday.