$**$ Most importantly needed the AOA or AON $**$

Construct an Activity$-$on$-$Arrow $($AOA$)$ or Activity$-$on$-$Node $($AON$)$ network from the precedence relationships of activities in the project given in the following Table.

Also calculate critical path, and EST and LFT values for each event, and verify floats using spread sheet. Check your critical path

$\backslash$table$[[$Activity$,$Description,Predecessors,Duration$],[$A$,$Preliminary design,$---,6],[$B$,$Evaluation of design,$---,12],[$C$,$Contact negotiations,$---,16],[$D$,$Preparation of fabrication plant,A$,5],[$E$,$Final design,B$,3],[$F$,$Fabrication of Product,C$,10],[$G$,$Shipment of the Product to owner,B$,$ D$,9],[$H$,$Field inspection of the Product,C$,$ E$,4],[$I$,$Installation of the Product,F$,5],[$J$,$Field painting,F$,3],[$K$,$Final inspection$/$approval$,$E$,$ G$,$ I,$10],[$L$,$Project closeout,H$,$ J$,6]]$