Develop the AON networks based on the following project schedule how long does it takes to complete this project. Draw the AON network and identify the critical path.

WBS	ID	Activity	Duration	Cost	Predecessors
1	1	Pool Project
1.1	2	Excavation	5d	$6,000
1.2	3	Reinforcing structure	3d	$5,900	2
1.3	4	Install piping	4d	$3,800	3
1.4	5	Install electrical	3d	$3,900	3
1.5	6	Blow pool concrete shell	5d	$13,500	5,4
1.6	7	Install decking	5d	$6,000	6FS+5d
1.7	8	Install pumps and blower	4d	$4,200	7
1.8	9	Install filtration system	2d	$3,600	7
1.9	10	Install landscaping	5d	$6,000	9, 8
1.1	11	Checkout system	1d	$600	10
1.11	12	Final approval	0d	$0	11