PROJECT MANAGEMENT (LOOSELEAF)-W/ACCESS
7th Edition
ISBN: 9781260216011
Author: Larson
Publisher: MCG
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Textbook Question
Chapter 6, Problem 22E
Given the network below, compute the early, late, and slack time for each activity. Clearly identify the critical path. 
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A project consists of five activities as shown in the following table.
Activity
Floor sanding
Floor buffing
Paint mixing
Wall painting
Ceiling painting
Start
Optimistic Time (hr) Most Probable Time (hr)
Start
Floor
Buffing
Paint
Mixing
Naturally, paint mixing precedes the painting activities. Also,
(a) Construct the PERT/CPM network for this problem.
Floor
Sanding
4
Paint
Mixing
4
0.5
3
3
Paint
Wall
Paint
Ceiling
Paint
Ceiling
Paint
Wall
5
5
1
4
7.5
Floor
Sanding
Pessimistic Time (hr)
Floor
Buffing
Finish
6
Finish
6
ceiling painting and floor sanding must be dor
1.5
11
9
i
Start
Start
prior to floor buffing.
Floor
Sanding
Paint
Mixing
Floor
Buffing
Paint
Mixing
Paint
Ceiling
Paint
Wall
Paint
Wall
Paint
Ceiling
Floor
Buffing
Floor
Sanding
Finish
Finish
A group of developers is building a new shopping center.A consultant for the developers has constructed theCPM/PERT network below and assigned activity times inweeks. Determine the earliest start and finish times, lateststart and finish times, activity slack, critical path, and duration for the project.
Prepare a plan for a small project of moderate complexity (at least 12 activities, with some interdependencies between activities).
Your plan should identify the activity by their beginning and ending nodes and by short, descriptive titles. Estimate the times to
complete the activities. Prepare a PERT/CPM network. Determine critical path and the expected time for completing the project
(Activity Analysis and Event Analysis). Choose a project of some personal interest and knowledge (e.g. building a house, selling a
house, political campaign etc.) Your project will be judged by how completely it identifies all activities, the reasonableness of your
time estimates and the correctness of your analysis.
UPLOAD YOUR ANSWER HERE AS IMAGE/PDF.
Chapter 6 Solutions
PROJECT MANAGEMENT (LOOSELEAF)-W/ACCESS
Ch. 6 - How does the WBS differ from the project network?Ch. 6 - How are WBS and project networks linked?Ch. 6 - Why bother creating a WBS? Why not go straight to...Ch. 6 - Why is slack important to the project manager?Ch. 6 - What is the difference between free slack and...Ch. 6 - Why are lags used in developing project networks?Ch. 6 - What is a hammock activity, and when is it used?Ch. 6 - Here is a partial work breakdown structure for a...Ch. 6 - Draw a project network from the following...Ch. 6 - Draw a project network from the following...
Ch. 6 - Draw a project network from the following...Ch. 6 - Draw a project network from the following...Ch. 6 - From the following information, develop an AON...Ch. 6 - The project information for the custom order...Ch. 6 - You have signed a contract to build a garage for...Ch. 6 - You are creating a customer database for the...Ch. 6 - K. Nelson, project manager of Print Software....Ch. 6 - A large Southeast city is requesting federal...Ch. 6 - You are creating a customer database for the...Ch. 6 - You are completing a group term paper. Given the...Ch. 6 - You are managing a product upgrade project for...Ch. 6 - You are creating a database for the Oklahoma City...Ch. 6 - The planning department of an electronics firm has...Ch. 6 - Using Microsoft Project, set up the network and...Ch. 6 - The optical disk project team has started...Ch. 6 - From the following information, compute the early,...Ch. 6 - Given the following information, compute the...Ch. 6 - Given the information in the following lag...Ch. 6 - Given the network below, compute the early, late,...Ch. 6 - The CyClon project team has started gathering...Ch. 6 - Advantage Energy Technology Data Center...Ch. 6 - Advantage Energy Technology Data Center...Ch. 6 - Advantage Energy Technology Data Center...Ch. 6 - The GE Company is preparing a bid to build the new...Ch. 6 - The GE Company is preparing a bid to build the new...Ch. 6 - The G&E Company is preparing a bid to build the...
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- A political campaign manager must coordinate several activities to be prepared for an upcoming election. The following table describes the relationships among the activities that need to be completed, as well as the estimated times. Activity Immediate Predecessors Time (Weeks) A - 4 B - 6 C A 3 D A 4 E B, C 8 F B 7 G D,E 2 H F 1 Develop a project network for this problem. Determine the ES, EF, LS, LF, and slack time for each activity. Also determine the total project completion time and the critical path(s).arrow_forwardThe Industrial and Systems Engineering Department at Sun University is moving from its old building to a new building. The move must be completed within the 14-day period between semesters. A list of tasks (activities) has been prepared. The activities and precedence requirements are presented in the table below. Three time estimates (in days) are given for each activity: optimistic time, most likely time, and pessimistic time. (a) Perform a forward pass and backward pass through the network to determine the critical path, and the expected duration of the project (b) What completion time should the department specify in its proposal in order to be 85% sure that it will complete the project on time? Activity Activity description Immediate predecessor Optimistic time (days) Most likely time (days) Pessimistic time (days) 1 Initiate move - 0 0 0 2 Prepare new building space 1 2 4 6 3 Pack faculty files and books 1 3 4 5 4…arrow_forwardA project's activities must be completed in the sequence indicated below. Activity Immediately Preceding Activity Duration in Weeks A - 3 B - 20 C - 15 D - 10 E - 5 F A 4 G D 3 H D, E 10 I F 3 J B 10 K G, H 7 L B, I 5 The project ends with the intersection of activities: C, J, K and L 1- Use CPM to construct (Draw) the project Network and find the critical path. 2- How long is the project expected to takearrow_forward
- 11-16 Jean Walker is making plans for spring break at the beaches in Florida. In applying techniques she learned in her quantitative methods class, she has identified the activities that are necessary to prepare for her trip. The following table lists the activities and the immediate predecessors. Draw the network for this project. 11-17 The following are the activity times for the project in Problem 11-16. Find the earliest, latest, and slack times for each activity. Then find the critical path. These problems go together and are deterministic times.arrow_forwardMake a list of the tasks that is necessary for Management Trainee Officer job in private banks. Develop a table showing each task, its duration, and preceding event(s). Develop a Network diagram for these tasks. Highlight the critical path on your Network diagram and find out slack of all activities.arrow_forwardWhat precisely does the critical route approach achieve, however, and why is it such a vital part of project scheduling?arrow_forward
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