Time Management (26)

Question 1

Early Finish =

Answer 1

Early Start + Duration - 1

Question 2

Early Start =

Answer 2

Early Finish Predecessor + 1

Question 3

Late Start =

Answer 3

Late Finish - Duration + 1

Question 4

Late Finish =

Answer 4

Late Start Successor - 1

Question 5

Free Float =

Answer 5

Early Start Successor - Early Finish - 1

Question 6

Total Float =

Answer 6

Late Finish - Early Finish

Question 7

When does Activity 1 start?

Answer 7

On day #1

Question 8

With lag greater than zero, first calculate the link as if…

Answer 8

It has no lag and then add the lag time.

Question 9

For the last activity that has no successor, Early Finish will equal =

Answer 9

Late Finish. (Early Finish = Late Finish = End of Project)

Question 10

The duration difference between Late Finish and Early Finish is called

Answer 10

Total Float

Question 11

Total Float is sometimes referred to as:

Answer 11

Slack

Question 12

Free float is the amount of time an activity can be delayed without delaying:

Answer 12

The ES date of a successor activity.

Question 13

Total float is the number of days an activity can be delayed without delaying:

Answer 13

The project end date

Question 14

Free Float is calculated by comparing:

Answer 14

The activity’s EF to the ES of its Successor
FF = ESs – EF

Question 15

Total Float is calculated by comparing:

Answer 15

The number of days between the late or early dates for each activity
TF = LF - EF = EF - ES

Question 16

Answer 16

Question 17

Answer 17

Question 18

Answer 18

Question 19

Answer 19

Question 20

Answer 20

Question 21

Schedule Performance Index measures the ratio of how much work was done to how much work was planned (scheduled).

SPI = Earned Hours (or $ to date) ÷ Budgeted Hours (or $ to date)

SPI = EV/PV

Answer 21

SPI = EV/PV

Question 22

You are the program manager for a city’s public school system. Your budget is $5 million to renovate 11 elementary schools this year. Each school is approximately the same size and requires the same level of effort and materials. Halfway through the year, renovations are complete on 7 schools, but your schedule only anticipated 5 at this point. What is your current SPI?

SPI = Earned Hours (or $ to date) ÷ Budgeted Hours (or $ to date)

SPI = EV/PV

Answer 22

SPI = 7 schools complete / 5 schools = 1.4

Project is 40% ahead of schedule

Question 23

SPI = EV/PV

The project is scheduled to last 8 months. During that 8 months, 200,000 units of a product must be made.

What is the PV? (200,000 units divided by 8 months = 25,000 units per month)

What is the PV at 2 months? By 2 months how much should be complete per PV? (2 mo x 25,000 units per month = 50,000 units)

EV = How much has the contractor actually done? (40,000 units after 2 months)

Formula: SPI = EV/PV

Answer 23

SPI = 40,000 / 50,000 = .8
SPI of .8 = (80%) performance

This indicates that the project is behind schedule and needs to increase production by 20%.

Question 24

Interpreting Schedule Performance Index (SPI)

Answer 24

Less than 1 is behind schedule

More than 1 is ahead of schedule

Question 25

Schedule Performance Index (SPI) For example, there may be a 3-month project and the project manager is calculating the SPI at the end of month #1. There is a project budget of $1,500 and the work is 40% complete. The project manager planned for $500 worth of work to be done each month. Is this project behind schedule, on schedule, or ahead of schedule? Formula: SPI = EV/PV

Answer 25

SPI = (40% of $1,500) / $500 = 1.2 SPI of 1.2 = (120%) performance This indicates that the project is 20% ahead of schedule.

Question 26

Schedule Performance Index (SPI) A 12-month project with a budget of $100,000, the project manager must determine the SPI at the 6-month mark. To date, $60,000 has been spent for 40% of the work completed; work was distributed evenly each month. Using the SPI formula, the project manager needs to determine how close to schedule the work is progressing. Formula: SPI = EV/PV

Answer 26

PV = $100,000 / 12 months = $8,333 per month EV = Its 6 months and $60,000 has been spent for 40% of the work PV @ 6 months = $50,000 spent, 50% complete EV @ 6 months = $60,000 spent, 40% complete (Looks like they have over spent and under performed) Schedule Performance Index (SPI) = EV/PV = 40% / 50% = 0.8 <-- 20% behind schedule Cost Performance Index (CPI) = EV / AC = $60,000/$50,000 = 1.2 <-- 20% over budget

Question 27

If D is the duration, ES and EF are the earliest start and finish, LS and LF are latest start and late finish time, then which of the following relationships is valid? a. EF = ES + D b. D = LF – ES c. LF = LS - D d. LS = LF + D

Answer 27

EF = ES + D

Question 28

When a change order to the construction contract is required, the agency CM should: a. Request that the contractor update the Milestone Schedule b. Establish fixed schedule completion dates for the impacted work c. Request a recovery schedule from the contractor d. Request a schedule impact analysis and cost estimate from the contractor

Answer 28

Request a schedule impact analysis and cost estimate from the contractor

Question 29

Which of the following terms is defined as a decrease by the owner in the amount of time given to the contractor to complete the job? a. Acceleration b. Float c. Change Order d. Excusable delay

Answer 29

Acceleration

Question 30

The difference between the time available to do a job and the time required to do the job, is known as: a. Event b. Float c. Constraint d. Duration

Answer 30

Float

Question 31

The occupancy plan is a means to plan and coordinate the time frame between the construction phase and: a. Demobilization b. Final punchlist completion c. Operation/use phase d. Final payment

Answer 31

Operation/use phase

Question 32

In a construction contract, where not specifically stated, schedule float is owned by the: a. CM b. General Contractor c. Owner d. Project

Answer 32

Project

Question 33

When determining the appropriate scheduling systems and procedures, the CM should consider: a. the client's needs to share information with the public b. the project budget available c. limiting the complexity of the information based on project resources to maintain the schedule d. size and complexity of the project

Answer 33

size and complexity of the project

Question 34

In a CM at-risk contract, who develops and controls the schedule? a. CM b. General Contractor c. Owner d. Architect

Answer 34

CM

Question 35

The CPM schedule helps a CM: a. all the above b. to concentrate his attention on critical activities c. avoid any delay in the critical activities to avoid delay of the whole project d. to divert the resources from non-critical advanced activities to critical activities

Answer 35

all the above

Question 36

The CPM schedule helps a CM concentrate his attention on _______ activities

Answer 36

critical

Question 37

The CPM schedule helps a CM avoid any delay in the critical activities to avoid delay of the whole project.

Question 38

The CPM schedule helps a CM to ___________ from non-critical advanced activities to critical activities

Answer 38

divert the resources

Question 39

A schedule recovery plan from the contractor is required by the CM if: a. concurrent Contractor and owner delays arise b. the owner's scope of work changes c. delays occur that are the responsibility of the Contractor d. a time extension request is submitted

Answer 39

delays occur that are the responsibility of the Contractor

Question 40

If the Contractor causes delays, the Contractor is required to provide the CM with a _________

Answer 40

schedule recovery plan

Question 41

The budgeted resources (person-hours or costs) multiplied by the percent of work completed is referred to as: a. Schedule Performance b. Cost-to-Complete c. Schedule Variance d. Earned Value

Answer 41

Earned Value = value of the completed work to date = planned budget x % actual complete

Question 42

For a particular project, it is estimated that a 20,000 LF, 4-way, concrete encased duct-bank is to be installed. The budgeted production crew rate is 8 hours per 300 LF and at a cost of $250 per 100 LF. During a reporting period, 60% of the duct-bank has been installed and 300 crew hours have been expended at a cost of $30,000. What is the schedule variance? Assume behind schedule is a negative (-). a. -30 b. 0 c. 20 d. 30

Answer 42

20 total project: 20,000 LF planned production rate: 8 HRs/300 LF planned cost: $250/100 FL planned total duration= 20,000 LF / 300 LF x 8 HRs = 533.333 HRs period of time: 60% based on the plan: 60% months = planned production would be 12,000 LF = 320 HRs = $30,000 cost According to the problem, the crew is at 60% complete and have used 300 HRS at $30,000 cost. This means that the crew is ahead of schedule by 20 HRs.

Question 43

A construction schedule provided by the CM in the pre-design phase is intended to: a. establish early start, late start, early finish, late finish, and total float for activities b. define critical activities and the critical path for the project c. show a reasonable estimate of the work sequence and constructibility constraints d. show the subcontractor's work activities and duration

Answer 43

show a reasonable estimate of the work sequence and constructibility constraints

Question 44

A construction schedule provided by the CM in the pre-design phase is intended to show a reasonable estimate of the ____________

Answer 44

work sequence and constructibility constraints

Question 45

Which statement addresses the scheduling results desired on a project? a. A bar chart that shows the start of major tasks b. Specification of the CPM tools to be utilized c. Mitigation of time and resource crises d. The date of the earliest possible project completion

Answer 45

Mitigation of time and resource crises

Question 46

The time by which activity completion time can be delayed without affecting the start of succeeding activities, is known as: a. total float b. free float c. duration d. interfering float

Answer 46

free float

Question 47

The critical path lies along the activities having a ________ total float. a. negative b. zero c. positive d. minimum

Answer 47

zero

Question 48

Which of the following statements is correct? a. If the float of an activity is negative, delay in its performance will not delay the completion of project b. If the float of an activity is zero, the activity is not critical and any delay in its performance will not delay the whole project c. The float may not be negative d. If the float is positive and the activity is delayed by a period equal to its total float, the completion of project is not delay

Answer 48

If the float is positive and the activity is delayed by a period equal to its total float, the completion of project is not delay

Question 49

What is the duty of the CM when managing time-sensitive work activities? a. To act as the coordinator and catalyst for the activities of all team members b. To keep the design requisite timeframes c. To plan and execute the construction on time d. To advise upper management of all potential delays

Answer 49

To act as the coordinator and catalyst for the activities of all team members

Question 50

When managing time-sensitive work activities, the CM should act as the coordinator and catalyst for:

Answer 50

the activities of all team members

Question 51

Which of the following scheduling errors prevents the calculation of a forward pass? a. Unwarranted use of a constraint date b. Use of hard logic instead of soft logic c. A logic loop d. Negative float

Answer 51

A logic loop

Question 52

What is the purpose of the pre-bid construction schedule developed by the agency CM? a. It helps validate construction durations in contract documents b. It establishes the contractor's baseline schedule c. It provides checks and balances used for contractor claims d. It establishes resource criteria for the work

Answer 52

It helps validate construction durations in contract documents

Question 53

The pre-bid construction schedule developed by the agency CM is used to help validate the _________

Answer 53

construction durations in contract documents

Question 54

Answer 54

What is the Late Start for Activity A? 1 What is the Late Finish for Activity A? 10

Question 55

Answer 55

What is the Total Float (TF) for activity E? 6 what is the Free Float (FF) for activity E? 6

Question 56

Answer 56

What is the Free Float (FF) for activity F? zero

Question 57

Answer 57

What is the Early Start for Activity H? 29 What is the Early Finish for Activity H? 33