Practical Operations Management
Practical Operations Management
2nd Edition
ISBN: 9781939297136
Author: Simpson
Publisher: HERCHER PUBLISHING,INCORPORATED
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Chapter 14, Problem 1.1Q
Summary Introduction

To find:The sequence in which B Construction should complete the repair projects of six road.

Introduction:TheJohnson rule is a technique of scheduling jobs in two work centers. The rule states that from the list of unscheduled jobs, the job with the shortest processing time in any of the work centers should be selected. The objective to use the Johnson rule is to reduce the time in which a group of jobs can be completed that are managed on two machines or at two work centers.

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De Law Construction has a gotten some construction jobs to build some starter housing units in a few areas. The building time for each housing unit to be completed as well as the date that each unit is to be completed is shown in the table below. Today is Day 471. Which of the sequences, EDD OR SPT should the company use to sequence the order in which they do the jobs, assuming that because of resource constraints it cannot do the jobs simultaneously?   HOUSING UNIT Building Time (days) Due Date Marabella 39 Day 502 Tabaquite 23 Day 528 San Juan 30 Day 515 Mayaro 33 Day 498 D’Abadie 41 Day 535 Preysal 40 Day 510       Some time after starting the jobs according to the sequence you decided on, it was found that because of inclement weather the last three housing units in the sequence have been delayed. You now have to prioritise  and decide in which order to expedite those three jobs, using the Critical Ratio model. It is now…
Using the FCFS rule for​ scheduling, the sequence is ▼   1-3-2 3-1-2 1-2-3 2-1-3 2-3-1 3-2-1 . Part 2 For the schedule developed using the FCFS​ rule, the total length of time taken to complete the three suits​ (including delivery)​ = enter your response here hours ​(enter your response as a whole​ number). Part 3 Using​ Johnson's rule for​ 2-machine scheduling, the sequence is ▼   3-1-2 1-2-3 2-1-3 3-2-1 2-3-1 1-3-2 . Part 4 For the schedule developed using the​ Johnson's rule, the total length of time taken to complete the three suits​ (including delivery)​ = enter your response here hours ​(enter your response as a whole​ number). Part 5 Of the two developed​ schedules, ▼   Johnson's the FCFS rule gets the schedule finished sooner.   ...   Question content area right Part 1 Sunny Park Tailors has been asked to make three different types of wedding suits for separate customers. The table below highlights the time taken in hours for cutting and sewing​…
Priority rules. Job times (including processing and setup) are shown in the following table for five jobs waiting to be processed at a work center.Job Job Time (hours) Due Date (hours)a 12 15b 6 24c 14 20d 3 8e 7 6Determine the processing sequence that would result from each of these priority rules:a. SPT b. EDD
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