SQ#3

Duration formula is:

(O +4ML +P)/6

What is the standard deviation formula?

(P - O)/6

Free Float belongs to _____________, while Total Float belongs to the ____________

Activity, Path

What are the 4 duration estimating techniques?

Analogous Parametric Three point/range/PERT Detailed

An estimate of durations on a current project using duration on a previous project is:

Analogous estimate

A start-start relationship from activity A to activity B means:

B cannot start until A has started

What are the triple constraints?

Cost, Schedule, Scope

What are two examples of physical constraints?

Crane erection material availability

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

END OF THE PROJECT

Differentiate between effort and duration

Effort - the time spent on a specific task Duration - total length of time it takes to complete that task

Free float can be greater than total float

False

The shortest schedule is always the best schedule

False

Total activity duration normally equals the duration of work

False

The number of days an activity can be delayed without delaying any successor activities is _________________

Free float

Provide an example of a start to start relationship

Installing underlayment on a roof cannot begin until sheathing installation has started

The amount of time the early start of an activity can be delayed without delaying the project completion but which will delay at least one successor

Interfering Float

Total float - free float =

Interfering float

What is the purpose of finding the early start and early finishes?

It gives you the earliest possible project completion date

Provide an example of a finish to finish relationship.

Landscaping cannot finish until the driveway is finished

The latest an activity can finish without delaying the project is known as:

Late Finish

Total float =

Late start - Early start

What are 3 of the 6 inputs to construction?

Materials/Installed equipment Craft labor Support equipment Tools Predecessor activities Information

In forward passes ______________ early finish of the predecessor controls the early start of the successor (Finish-Start relationship)

Maximum

In backward passes the _____________ late start of the successor controls the late finish of the predecessor (Finish-Start relationship)

Minimum

What may need to happen before actual work begins and is usually not included in the activity duration?

Mobilization

Constrained end date earlier than calculated late finish

Negative Float

Can a successor with a finish-finish task relationship be completed before the predecessor?

No

What are the 6 categories of constraints?

Physical Environmental Management Contractual Regulatory Safety

The duration of the activity is typically the duration that meets or exceeds what four requirements?

Quality standards Safe work environment Within budget Project complete on-time

What are the two reasons for leveling resources?

Reduce overallocation of a resource Smooth resource usage across an activity

What are two factors that impact total duration?

Resource availability Work environment External factors

The least used type of relationship is:

Start-Finish

What two types of relationships cannot be combined in a precedence network?

Start-Start Finish-Finish

Which method of entering dependencies is best for non-finish-to-start relationships?

Task Information Dialog

What are the five methods used to enter dependencies in Microsoft Project?

Task Information Tab Dragging Link Icon Task Form Gantt Chart Column

What is the difference between total float and free float?

Total float is the number of days an activity can be delayed without delaying the end of the project. Free float is the number of days an activity can be delayed without delaying any successor activity.

___________ float has to do with the path duration and __________ float has to do with the activity duration

Total, free

Interfering float is available to more than one activity.

True

Reassigning resources from an activity with free float to an activity on the critical path can help reduce duration

True

Total float is greater than free float

True

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

True

What are the three options for accounting for weather?

add to activity duration add weather activity to project phase add weather activity at the end of the schedule

When a subcontractor gives you a duration it is a:

best guess of actual days will not exceed will be exact

The three point estimate adds ____________ to duration.

contingency

Who has the option to own float?

contractor owner project team

Name one of the top reasons why planned work is not done on time

craft labor coordination material accessibility

Activities with no total float are ___________ activities

critical

The forward pass will calculate __________ starts and finishes

early

For a finish-start relationship with lag, the early finish of the predecessor activity plus the lag equals the ____________ of the successor activity.

early start

Two activities can have both a start-start and finish-finish relationship

false

Earliest early start of a successor activity - early finish =

free float

When you need to cut time out of the schedule, you look for activities with the most:

free float

Name two factors that affect construction for CMU block

height block size reinforcement and grout

What are some potential problem areas when determining durations?

in the dirt underground weather complex design

Name two inputs to the construction work area that can affect production

information tools support equipment craft labor predecessor activities

The backward pass gives the __________ starts and finishes.

late

In a finish-finish relationship, late finish of a predecessor is found by:

late finish of a successor - lag

In a start-start relationship, late start of a predecessor activity is found by:

late start of a successor - lag

Free float must be _____________ total float.

less than or equal to

What are the three points in the three point estimate?

optimism most likely pessimism

When performing a forward pass, start with activities what have no ____________

predecessors

An analogous estimate is based on using durations of _____________, _____________ projects to estimate current projects

previous, similar

Float is used to _________ project duration.

reduce

A parametric model is a mathematical representation of cost _________________ that provide a logical and predictable correlation between the physical or functional characteristics of a plant and its resultant cost.

relationships

Free float is determined by

successor

To perform a backward pass, start with an activity with no:

successor

How do you cut time out the schedule using free float?

take resources from the activities with free float and apply them to critical activities, but make sure to not delay these activities longer than the float

After the forward and backwards passes are completed, what can be calculated?

total float and free float

Initial schedule should include estimate of days lost to ____________ based on normal conditions

weather

Duration =

work/resources per time period

Can multiple critical paths exist?

yes, but they must connect at some point