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construction project management

Questions and Answers of Construction Project Management

An ambitious student wants to start a restaurant, so he wants to buy a nice kitchen set consisting of state of art grills two, three stoves, two dishwashers, three refrigerators, two ovens, and three
A manufacturing unit in a facility is thinking of purchasing automatic lathes which could save $67,000 per year on labor and scarp. This lathe has an expected life of 5 years and no market value. If
My grandmother just purchased a new house for $500,000. She made a down payment of 50% of the negotiated price and then makes a payment of $2,000.00 per month for 36 months. Furthermore she thinks
A small scale industry thinks that it will produce 10,000 tons of metal during the coming year. If the processes are controlled properly then the metal is going to increase 5% per year thereafter for
A university alum wants to save $25,000 over 15 years so that he could start a scholarship for students in industrial engineering. To have this amount when it is needed, annual payments will be made
A company borrowed $10,000 at 12% interest per year compounded yearly. The loan was repaid at $2,000 per year for the first 4 years and $2,200 in the fifth year. How much must be paid in the sixth
Repeat Exercise 8.6 if the MARR for the company is 5.5% in the first 4 years and increases to 6% starting in year 5.
A newly implemented technology in a manufacturing plant pays zero revenue in the first 2 years but $1000 revenue in the third and fourth years; this amount increases by $500 annually for the
In order to maintain RAB University’s football stadium, the athletic department of the university needs annual maintenance costs of $60,000, annual insurance costs of $5,000, and annual utilities
How much must be deposited into a project account today if the project costs for each of the first 5 years is $12,000 and this amount increases by 10% per year for the following 10 years if the
A football player signed an $11 million 10 year contract package with a football team he joined recently. Based on this contract, the football player will receive the following benefits; his yearly
If the nominal interest rate on a savings account is 0.25% payable, or compounded, quarterly, what is the effective annual interest rate? If $1000 is deposited into this account quarterly, how much
Calculate how long it would take your current personal or family savings to double at the current interest rate you are being offered by your bank. What will it take for you or your family to reduce
Solve Exercise 7.14(integer programming) using the simulated annealing procedure. Use T = 60, k = 0.8 and stop when the order does not change in three iterations.
A fashion clothing warehouse is located in Oklahoma City and serves five stores located in Norman, Tulsa, Oklahoma City, Muskogee, and Stillwater. Each week a truck delivers clothes from the
Consider the project network given in Figure 7.48.a. Determine the critical path for the network when each activity is realized at its normal time.b. Suppose the project must be completed in 15 days.
Develop an integer programming model for the resource allocation problem in Figure 7.47 assuming that daily resource availability is 5 units. Use LINDO or any other integer programming software to
White Water Fun Park is planning to add another ride which consists of three main parts A, B, and C. The manager anticipates that it will take 14 days to receive the material. It should then take 7
Use any software tool available to you to solve the LP model in Exercise 7.11.
Develop a general LP formulation for scheduling the project in Table 7.12. Resource requirements and precedence relationships must be satisfied in the model (R1 = 5, R2 = 3).
Develop a computer program for finding the shortest path between all pairs of nodes in a directed acyclic network. Use the program to verify your solution to Exercise 7.9.
Find the shortest path between the originating node and the terminal node for the following acyclic network.
A project manager has four crews which can be hired on a temporary basis during peak construction periods. The manager currently has three projects more than can be handled with his regular crews. It
Golden Eagles, Inc. produces three styles of portable stadium seats: high-rider style, low-rider style, and line-hugger style. The seats are made of high-impact composite material and are produced in
Starting with Vogel’s approximation as the starting solution, solve the transportation problem example presented in this chapter. The example was previously solved with the northwest-corner
Solve the resource assignment problem with the following cost matrix: [3 7 24 3657 6456 4 345
Develop and solve the knapsack formulation to schedule the project presented in Table 7.10, the resource for which is presented in Table 7.11. Draw the Gantt chart for the schedule. Use the following
Solve the LP model of the example presented in this chapter on the number of workers to assign to a project workstation. Discuss how you would go about implementing the LP solution in a practical
A delivery person makes deliveries to two project sites, site A and site B. He receives$1000 per delivery to site A and $200 per delivery to site B. He is required to make at least five deliveries
Repeat the activity scheduling example presented in this chapter with the assumption that a 15-min break is required between the completion of one activity and the start of the next activity.
Develop a computer simulation model to solve the problem in Exercise 6.18. Run the simulation for N = 1, 2, 3,…, 200. Plot the probabilities versus the values of N. Discuss your findings.
Suppose N independent candidates are to be scheduled for interviews during 1 year(365 days). Each interview takes exactly 1 day. There is only one interviewer available and only one candidate can be
The birthday problem is a popular problem in probability. The problem involves finding the probability that at least two people have the same birthday in a group of N individuals. An activity
Draw a fishbone diagram for evaluating the causes of deficiencies for each of the following project parameters:Cost Schedule Performance
Consider the following payoff matrix for a decision-making problem:Determine the best alternative as a function of P(θ1) = p, where 0 ≤ p ≤ 1. What is the best alternative for p = 0.3? What is
Alctrex Construction Company is bidding against Betatrex for a building project. Due to past performance of both companies, Alctrex knows that if the company bids a lower or an equal amount, it will
The duration of a certain task is known to be normally distributed with a mean of 7 days and a standard deviation of 3 days. Find the following:a. The probability that the task can be completed in
What types of data would you recommend to be collected for a project involving the construction of a new soccer playground in a small community?
Using a software tool, such as a spreadsheet program, compute the average deviation, standard deviation, and variance for the raw data presented in Exercise 6.8.
Use the raw data presented in Exercise 6.8 to verify that (X − X) = 0.
The employees selected to work on a project are surveyed to select the type of organization structure suitable for the project. Which measure of central tendency would be the most appropriate to
For each of the following measurement scales—nominal scale, ratio scale, ordinal scale, and interval scale—list at least five factors or data types associated with project management that can be
Given the following data for three projects, perform the complete data analysis as was done for Table 6.2. How would you perform the average cross-check in the cell marked “XXX”? Project January
List some additional reasons for terminating a project as a measure of control.
For each of the causes of control problems listed in this chapter, discuss what corrective actions should be taken.
How can schedule control be tied in with cost control?
How is the WBS (work breakdown structure) valuable in project monitoring and control?
Prepare a taxonomy of what should be included in a project management information system as measures of control.
Some common impediments to control.
Give one definition of productivity that relates to managerial control.
Calculate the takt time for a production project that calls for the production of 125 units of a product within an 8 h work day that includes two 15 min rest breaks and a 45 min lunch break.
Pay and work rate distribution exercise: Suppose two construction workers did a job together over several days and agreed to split the profits as follows:Contractor A: 40%Contractor B: 60%Contractor
Suppose the sixtieth unit of a product produced under a learning rate of 80% is $30. If the production standard is $20 per unit, determine how many more units must be produced before the standard can
The first 50 unit order of a job shop costs $1500. It is believed that the shop experiences a 75% learning curve rate. Determine a reasonable price quote for the next 80 unit order of the same job.
Suppose unit 190 of a product requires 45 h to produce under a learning curve rate of 80%. Determine the number of hours required by the first unit of the product and the number of hours required by
The first performance of a task requires 8 h. The twentieth performance of the task requires only 2 h. If this task is subject to a conventional learning process, determine(a) Learning rate
Suppose the first 20 unit batch of a product has an average cost of $72 per unit, the next 30 unit batch has an average cost of $60 per unit, and the next 50 unit batch has an average cost of $50 per
Suppose an operation is known to exhibit a learning curve rate of 85%. Production was interrupted for 3 months after 100 units had been produced. If the cost of the very first unit is $50, find(a)
In a certain project operation, it was noted that a total assembly cost of $2000 was incurred for the production of 50 units of a product. Suppose an additional 100 units were produced at a cost of
Compute scaled CAF priority weight for each of the activities in the project described hereafter. Use the scaled values to schedule the activities. Compare the schedule obtained to the schedule in
Suppose snowfall is a critical resource for a skiing business. The availability of snowfall in inches during a season is known to be a random variable defined by a triangular distribution with a
Three resource types (RES 1, RES 2, and RES 3) are to be assigned to a certain task. RES 1 working alone can complete the task in 30 days, RES 2 working alone can complete the task in 45 days, and
There are three resource types available for a certain project. One unit of each resource type is available. The project manager wants to evaluate the project cost on the basis of how resource teams
For the project data in the table, use the comprehensive network complexity approach to compute the network complexity for all possible combinations of resource availability(Z1, Z2), where the
For the project data in the table, use the comprehensive network complexity measure to compute the network complexity for the following alternate levels of resource availability: 2, 3, 4, 5, 6, 7, 8,
Use the approach presented in Chapter 4 to compute the project network complexity for the data in Exercise 5.3.
Develop a quantitative methodology for incorporating different levels of quality of work by different resource types into the procedure for work rate analysis presented in this chapter.
Three resource types (RES 1, RES 2, and RES 3) are to be assigned to a certain task. RES 1 working alone can complete the task in 35 days, RES 2 working alone can complete the task in 40 days, and
Suppose three resource types (RES 1, RES 2, and RES 3) are to be assigned to a certain task. RES 1 working alone can complete the task in 35 days, RES 2 working alone can complete the task in 40
A scarce resource is to be leased for an engineering project. There is a graduated cost associated with using the resource at a certain percentage level, U. A step function has been defined for the
Suppose rainfall is a critical resource for a farming project. The availability of rainfall in terms of inches during the project is known to be a random variable defined by a triangular distribution
Suppose the utilization level of a critical resource is defined by a normal distribution with a mean of 70% and a variance of 24% squared. Compute the probability that the utilization of the resource
A project involves laying 100 miles of oil distribution pipe in the Alaskan wilderness. It is desired to determine the lowest-cost crew size and composition that can get the job done within 90 days.
Three project crews are awarded a contract to construct an automated plant. The crews can work simultaneously on the project if necessary. Crew 1, working alone, can complete the project in 82 days.
Use the computational measure presented in this chapter to compute the resource utilization level (area) for each schedule in Exercise 5.6.
Draw the resource idleness graph for each schedule in Exercise 5.6.
Draw the resource loading graph for each schedule in Exercise 5.6.
Schedule the project in Exercise 5.3 using each of the following heuristics: CAF, LS, ES, LC, EC, TS, CRD, and ACTIM. What is the shortest project duration obtained?Which heuristics yield that
Using the computational approach presented in this chapter, compute the scaled CAF weight for each activity in Exercise 5.3.
For Exercise 5.3, draw the resource loading diagram for each resource type on the same graph. Which resource type exhibits more fluctuations in resource loading?
Use the minimum total slack (Min TS) heuristic to schedule the resource-constrained project. If a tie occurs, use minimum activity duration to break the tie.Units of resource type 1 available = 10
Presented in the table is the activity data for a project that is subject to variable resource availability. It is assumed that the scaled CAF weights for the activities are already known as given in
For the project data in Table 5.2, redefine the activity durations in terms of the PERT estimates presented as follows. If the other activity data are the same as presented in Table 5.2, compute the
For the problem given in Exercise 4.12, assuming that the variance of duration is 0 for all the project phases, determine the time–cost trade-off curve by defining the strategies and calculating
Draw an AOA network for the project described in Exercise 4.19. Use as few dummy arcs as possible.
The median rule of project control refers to the due date that has a 0.50 probability of being achieved. Suppose the duration, T, of a project follows a triangular distribution with end points a
For the project data in Exercise 4.20, assume that the given activity durations represent the most likely PERT estimates (m). Define the other PERT estimates a and b as follows:Disregarding the PDM
Would you classify the CPM procedure as a management by objective (MBO)approach or a management by exception (MBE) approach? Discuss.
Draw an expanded CPM network for the Gantt chart in Exercise 4.21 considering the need to split activities.
Repeat Exercise 4.20 and consider the lead–lag PDM restrictions. Draw the Gantt chart schedule that satisfies all the lead–lag constraints.
Assume that we have the following precedence diagramming network data:The following PDM restrictions are applicable to the network:SSAB = 3 FFAB = 12 FSBC = 1 SSBD = 6 SFDE = 13 FSFG = 3 If the
Assume that you are the manager responsible for the project whose data is presented as follows:(a) Draw the CPM diagram for this project.(b) Perform the forward and backward pass calculations on the
(a) What potential effect(s) does the crashing of a noncritical activity have on the critical path and the project duration?(b) Use a hypothetical example of a CPM project network consisting of seven
Presented in the following are the data for a precedence diagram problem. The SS, SF, and FF relationships between pairs of activities are given.SS(between A and B) = 1 F(between A and B) = 8
Suppose we are given the following data for a project:There is no penalty if the project is completed on or before the normal PERT duration. However, a penalty of $3000 is charged for each day that
You are given the following project data:If the PERT time estimates for each activity are defined asfind a deadline, Td, such that there is 0.85 probability of finishing the project on or before the
Suppose it is known that the duration of a project is uniformly distributed between 24 months and 46 months. Find the probability that the project can be completed in 40 months or less.
Suppose it is known that the duration of a project has a triangular distribution with a lower limit of 24 months, an upper limit of 46 months, and a mode of 36 months. Find the probability that the
Answer the following questions using the tabulated project data.(a) There is a penalty of $3000/day beyond the normal PERT duration. Perform a crashing analysis to compare total normal cost to total
Perform a PERT analysis of the following project and find the probability of finishing the project between 16 and 20 days inclusive. Activity Predecessors Duration Estimates (Days) (a, m, b) 1,4,5 3

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