Question

Draw an activity on the arrow network for the activities of a project as shown in table, indicate the critical path and calculate the total float

Activity	description	immediate predecessor	Expected time (Weeks)
A		-	5
B		-	4
C		A	7
D		B	7
E		B	8
F		B	5
G		C,D	8
H		E,I	11
I		F	2
J		F	12
K		H,I	11

2.convert the above into activity on the node

Answer 1

First Let's the draw (AON) diagram for values. ES EF 1 ES EF If=o А 5 с 7 6112 ES 13 20 T 15+F=0 Es Earlystart EF= Early finish LS - Late start ILF = Late Anish Total ploat - LF-EF CTF) CO) LS-ES EF G 1 5 ES EF 4 B 4. 8 13 2 23 LF TF=0 144 TE=0 17 6/12 TF = 1 LS L ES EF ES EF 5 112 13 1 23 H E 8 11 ES EF 24 134 K F=0 TFO 5 12 13 2 5 I 24134 2 ہا یا 519 TE=0 10121 22 123 T=0 J TF=23-11 TF = 12 12 10121 LS LE TF = 0 has will stay Activity "G 2 input Ef=12 for "c'activity, EF = 11 for "D" activity, activity G finishs. EF = (ES + activity duration ) - 1 LS = (ht- activity duration on)+1 once activity "C"

Critical path is B-E-H-K project completion days = 34 (weeks) Activity Total float A B С D F Orto O O O doo