3.6 and 3.10

3.9 Task time estimates for the modification of an assembly 3.6 Given the activities whose sequence is described by the line at Jim Goodale's Carbondale, Illinois, factory are as follows: following table, draw the appropriate activity-on-arrow (AOA) network diagram TIME (IN IMMEDIATE ACTIVITY HOURS) PREDECESSORS a) Which activities are on the critical path? b) What is the length of the critical path? B 6.0 72 A IMMEDIATE PREDECESSOR(S) 5.0 6.0 ACTIVITY A TIME (DAYS) 5 mon 4.5 B, C B, C D F B A 2 7.7 40 EF 4 D B 5 E B 5 a) Draw the project network using AON. b) Identify the critical path. c) What is the expected project length? d) Draw a Gantt chart for the project. PX 3.10 The activities described by the following table are given for the Howard Corporation in Kansas: F 5 EF 2 H D 3 IMMEDIATE PREDECESSOR(S) G H 5 ACTIVITY A B TIME 9 7 C A 3 3.7 Using AOA, diagram the network described below for Lillian Fok's construction project. Calculate its critical path. How long is the minimum duration of this network? D B 6 E 9 F 4 ACTIVITY NODES TIME (WEEKS) ACTIVITY TIME (WEEKS) NODES G 6 H 5 ) 1-2 10 N 3-4 2 B EF D G H a) Draw the appropriate AON PERT diagram for J.C. Howard's management team. b) Find the critical path. c) What is the project completion time? Px 1 3 K 1-3 8 o 4-5 7 L 2-4 6 P 3-5 5 M 2-3 3 3