Production and Operations Analysis, Seventh Edition
7th Edition
ISBN: 9781478623069
Author: Steven Nahmias, Tava Lennon Olsen
Publisher: Waveland Press, Inc.
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 10.6, Problem 24P
A.
Summary Introduction
Interpretation: The load profiles for welders and pipe fitters are to be determined assuming an early start
Concept Introduction: Resource loading is a method of allocating manpower, equipment and materials required for completion of a project.
B.
Summary Introduction
Interpretation:The load profiles for welders and pipe fitters are to be determined assuminga late start schedule.
Concept Introduction: Resource loading is a method of allocating manpower, equipment and materials required for completion of a project.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
1. The activities involved in the construction of a certain project are given in Table 1.
One resource type will be used during the contract. Determine minimum level of
the resource required to complete the project.
a) Draw the precedence network and perform the CPM calculations.
b) Prepare the Bar chart, Resource load table and and resource histogram (for both
Early start time and Late start time)
c) Allocate the required resources, then level them so that the contractor does not use more than
six laborers at any time.
Preceded Duration
by
Activity
Laborers
(Days)
A
5
7
4
А
D
A,B
5
C,D
2
2.
m3
3.
2.
B.
James Lawson has decided to run for a seat as Congressman from the House of Representatives, District 34, in Florida. He views his 8-month campaign for office as a majorproject and wishes to create a work breakdown structure (WBS) to help control the detailed scheduling. So far, he has developed the following pieces of the WBS: Help Lawson by providing details where the blank lines appear. Are there any other major (Jevel-2) activities to create? If so, add an ID no. 1.6 and insert them.
To complete the rotor assembly for an experimental spacecraft, Gilbert has laid out nine major activities involved. These activities have been labelled A to I in the table below, which also shows their estimated completion times (in weeks) and their immediate predecessors.
EVENTS AND ACTIVITIES FOR ROTOR ASSEMBLY
ACTIVITIES
TIMES (IN WEEKS)
PRECEDING EVENT
A
M
B
A
1
2
3
-
B
2
3
4
A
C
4
5
6
A
D
8
9
10
A
E
2
5
8
B
F
4
5
6
B, C
G
1
2
3
F, D
H
1
3
5
E, F
I
2
4
6
H, G
Key: A is optimist time, M is the most likely time and B is the pessimistic time.
a) Calculate the expected time for each activity
b) Draw a Gantt Chart from the same information above
c) State the critical path and the maximum number of weeks the project will take to be completed.
d) Discuss the pros and cons of using the Gantt chart as a planning and scheduling tool?
Chapter 10 Solutions
Production and Operations Analysis, Seventh Edition
Ch. 10.2 - Prob. 1PCh. 10.2 - Prob. 2PCh. 10.2 - Prob. 3PCh. 10.2 - Prob. 4PCh. 10.2 - Prob. 5PCh. 10.2 - Prob. 6PCh. 10.3 - Prob. 7PCh. 10.3 - Prob. 8PCh. 10.3 - Prob. 9PCh. 10.3 - Prob. 10P
Ch. 10.4 - Prob. 11PCh. 10.4 - Prob. 12PCh. 10.4 - Prob. 13PCh. 10.4 - Prob. 14PCh. 10.4 - Prob. 15PCh. 10.4 - Prob. 16PCh. 10.5 - Prob. 17PCh. 10.5 - Prob. 18PCh. 10.5 - Prob. 19PCh. 10.5 - Prob. 20PCh. 10.5 - Prob. 21PCh. 10.6 - Prob. 22PCh. 10.6 - Prob. 23PCh. 10.6 - Prob. 24PCh. 10.6 - Prob. 25PCh. 10 - Prob. 26APCh. 10 - Prob. 27APCh. 10 - Prob. 28APCh. 10 - Prob. 29APCh. 10 - Prob. 30AP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, operations-management and related others by exploring similar questions and additional content below.Similar questions
- 1. The activities involved in the construction of a certain project are given in Table 1. One resource type will be used during the contract. Determine minimum level of the resource required to complete the project. a) Draw the precedence network and perform the CPM calculations. b) Prepare the Bar chart, Resource load table and and resource histogram (for both Early start time and Late start time) c) Allocate the required resources, then level them so that the contractor does not use more than six laborers at any time. Preceded Duration Laborers by Activity |(Days) A B 7 4 C A 3 3 D А,В 5 3 E C,D 2 2.arrow_forwardCreate an AOA diagram based on the information Task A, duration 6, dependent on noneTask B, duration 5, dependent on noneTask C, duration 3, dependent on noneTask D, duration 12, dependent on Task B and Task C Task E, duration 2, dependent on Task ATask F, duration 5, dependent on Task BTask G, duration 1, dependent on Task BTask H, duration 9, dependent on Task E and Task FTask I, duration 7, dependent on Task GTask J, duration 7, dependent on Task HTask K, duration 3, dependent on Task ITask L, duration 5, dependent on Task Darrow_forwardjames is replacing the window of a commercial passenger aircraft, but realises that he doesn’t quite have enough new bolts with the screen– he has just over half of the number he needs. the standard practice is usually to throw away old bolts and to refit windows with new bolts provided with the screen. however, time is short, he’s due to finish for the day, and he suspects that if he goes to find more bolts there will be delays and he won’t be able to finish on time. in addition he’ll be late for his date, and he wants to make a good impression. he knows that other members of staff sometimes re-use old bolts when they’re short of parts. is using the old bolts compatible with showing due respect to life, law and the public good?arrow_forward
- Roger Ginde is developing a program in supply chain management certification for managers. Ginde has listed a number of activities that must be completed before a training program of this nature could be conducted. The activities, immediate predecessors, and times appear in the accompanying table: Activity Immediate Predecessor(s) Time (days) B A, D C E, F This exercise contains only parts b, c, and d. b) The critical activities for the leadership training program development project are B - D - E - G. c) The project length for the leadership training program development project = 28 days. d) Slack time for each of the activities is: ABCDEFG Activity A Slack Time ∞ or w w w 10arrow_forwardTable : Task time pizza assembly Task Description Roll Dough Add pizza source Sprinkle cheese A B с D E F G H Task time (sec) Preceding task 60 30 35 25 Add sausage Add Pepperoni 35 Add Mushrooms 22 Shrink-wrap pizza 15 Add label 23 A B с с с D,E,F G Total time 245 sec Table above shows the task time and precedence relationships for a pizza assembly. The product time per day is 8 hours and the production schedule requires 300 pizzas per day by the assembly time. 1. Draw the precedence diagram of the operation. 2. Determine the cycle time of the line. 3. Calculate the minimum number of workstations for this operation. 4. Construct the line layout of the operations following by rules below: 5. Longest task time rule. 6. Number of following rules. 7. Compute the resulting efficiency and balance of delay percentages. 8. If a worker is paid RM35 per day, compute the cost of idleness per week (assuming a work 6-day week).arrow_forwardUse the following network and the data to perform the following: a) Prepare the manpower loaded Gantt chart with total floats of this project using early start and late times. Plot the manpower resource profile that shows the total number of laborers per day over the course of the project. Prepare the Gantt chart and the resource profile using the early start and finish dates of activities (not necessary to produce the late start and finish charts). b) Level the manpower resource given the constraint that the owner has only 14 workers to allocate to this project per day. Please try to do in excel. Thannksarrow_forward
- Ed is planning to build a treehouse as a present for his son's upcoming 10th birthday. The details for each task are as follows: DE F G AD C,E F 12 Task A B Preceding Task Duration (day) | 12 A B 10 12 5 Cost (RM) 50 140 120 60 70 80 60 (a) Obtain the following: • The number of days it will take for Ed to finish building the treehouse. • Which tasks are cannot be delayed at all without delaying the whole project. • The total cost of building the treehouse. (b) Due to illness, Ed has to begin building the treehouse later than planned. He reckons that he must reduce the build duration by 3 days to complete the treehouse by his son's birthday. He has determined the crash cost and crash time for each task as follows: Task А В С DE F G Crash Time (day) | 12 8 9 8 10 5 6 Crash Cost (RM) | 50 170 180 70 95 80 60 Obtain the following: • All tasks that are crashed and by how much. • The new total cost for building the treehouse.arrow_forwardDaily demand of a product is 240 units and the assembly line operates 8-hour per day. The task times and precedence relationship are given below. Task Task time (sec) Immediate predecessor A 60 B 80 A C 20 A D 50 A E 90 B,C F 30 C,D G 30 E,F H 60 G a. What is the assignment task-workstation assignment obtained using ranked positional weight heuristic? b. What is the cycle time achievable? c. What is the efficiency of the line?arrow_forwardWhy is the Business Analysis Modeling important during business requirement gathering phase in project management.arrow_forward
- A new order filling system is needs to be installed as soon as possible. The following activities need to be completed in the order shown below. Also provided is the cost information to reduce the normal activity times. 4. Activity Crash Normal Crash Immediate Predecessors Normal Time Time Cost ($) Cost ($) A 7 5 2000 3500 --- В 10 8 3000 5700 A 8. 7 3000 3800 A D 6. 4 1600 2600 C E 7 4 2000 4100 3 1200 2800 D, E В, С F, G G 11 8 8200 10900 H 4 3 2600 4800 Crash the project to 25 days. What will the total crashing cost be? а. b. с. What activities will be crashed?arrow_forwardA company needs to rebalance a product layout for producing new plastic license plates. They plan to use the assembly line six hours in order to meet projected demand of 2,160 license plates each day. The following table describes the tasks involved in the production of this product: Without regard to projected demand, what is the maximum possible cycle time for this assembly line? Task Time (secs) Immediate Predecessor a 3 none b 4 none c 5 a,b d 7 none e 9 c,darrow_forwardThe City Commission of Nashville has decided to build a botanical garden and picnic area in the heart of the city for the recreation of its citizens. The precedence table for all the activities required to construct this area successfully is as follows: A- Time B- Code Description (hrs) Immediate Predecessor(s) C- A Find location; determine resource requirements 25 None Requisition of lumber and sand Dig and grade Saw lumber into appropriate sizes 55 A D- C 100 A E- 30 В E Position lumber in correct locations 20 D, C F- F Nail lumber together 10 E G- Put sand in and under the equipment Put dirt around the equipment G 25 F H F H- Put grass all over the garden, landscape, paint 35 G, H Refer to the legend for the activity that corresponds to each code. Using the line drawing tool, draw a Gantt chart for activities E through I of the project. 20 40 60 80 100 120 140 160 180 200 220arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Practical Management ScienceOperations ManagementISBN:9781337406659Author:WINSTON, Wayne L.Publisher:Cengage,
Operations ManagementOperations ManagementISBN:9781259667473Author:William J StevensonPublisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...Operations ManagementISBN:9781259666100Author:F. Robert Jacobs, Richard B ChasePublisher:McGraw-Hill Education
Purchasing and Supply Chain ManagementOperations ManagementISBN:9781285869681Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. PattersonPublisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...Operations ManagementISBN:9781478623069Author:Steven Nahmias, Tava Lennon OlsenPublisher:Waveland Press, Inc.
Practical Management Science
Operations Management
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:Cengage,
Operations Management
Operations Management
ISBN:9781259667473
Author:William J Stevenson
Publisher:McGraw-Hill Education
Operations and Supply Chain Management (Mcgraw-hi...
Operations Management
ISBN:9781259666100
Author:F. Robert Jacobs, Richard B Chase
Publisher:McGraw-Hill Education
Purchasing and Supply Chain Management
Operations Management
ISBN:9781285869681
Author:Robert M. Monczka, Robert B. Handfield, Larry C. Giunipero, James L. Patterson
Publisher:Cengage Learning
Production and Operations Analysis, Seventh Editi...
Operations Management
ISBN:9781478623069
Author:Steven Nahmias, Tava Lennon Olsen
Publisher:Waveland Press, Inc.
Inventory Management | Concepts, Examples and Solved Problems; Author: Dr. Bharatendra Rai;https://www.youtube.com/watch?v=2n9NLZTIlz8;License: Standard YouTube License, CC-BY