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OBS220 > Chapter 5 > Flashcards

Chapter 5 Flashcards

1
Q

Estimated resources needed for activities
Resources include?

A
  • people
  • materials
  • equipment
  • facilities
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2
Q

Influence on duration of activities?

A
  • Availability of resources
  • types of resources
  • sufficient quantities of resources for activity durations
  • potential conflicts / other projects may cause
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3
Q

Estimated duration of an activity?

A

Estimated total relapsed time for low long an activity will take from start to finish (include waiting time)

shown in lower right hand corner of box

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4
Q

3 time estimates?

A

For projects will high degree of uncertainty about estimated duration
1. Optimistic estimate
2. Pessimistic est
3. Most likely est

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5
Q

Establish project start & completion time ?

A
  • define overall window for project completion
  • sponsor / customer often stated required completion time in project charter , RFP , contract
  • may not want to commit to a certain date
    • project not to start till customer approved contract
    • delay in contract signing may impact start
  • set finish time as no. Of days from P start
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6
Q

Prior activities for schedules development?

A
  • est duration of each activity
  • est overal window of time for P

once est determine whether the P can be finished by required finished time

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7
Q

Calculate EF (earliest finish) ?

A

EF= ES + estimated duration

Are calculated by moving forward

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8
Q

Earliest start ?

A

Earliest an activity can begin

Put at top left of block

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9
Q

Earliest finish ?

A

Earliest an activity can be completed

Put at top right of block

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10
Q

Latest finish time (LF) ?

A

Latest time which a specific activity must be completed for project to be finished by its required completion time

Put at bottom right block

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11
Q

Latest start time (LS) ?

A

Latest time which a specific activity must be started for the project to be finished by the required completion time

Put at under left of block

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12
Q

Calculate latest start time (LS) ?

A

LS= LF - est duration

Are calculated by moving backwards

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13
Q

Calculate Total slack (total float) ?

A

TS= LF- EF
OR
TS= ES-EF

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14
Q

What is negative slack ?

A
  • lack of slack over entire project
  • amount of time an activity must be accelerated
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15
Q

What is positive slack ?

A
  • max amount of time the activities on a particular path can be delayed without jeopardising on time completion
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16
Q

What is the critical path ?

A

Any path of activities with 0 or negative slack

Longest path with lowest total slack

17
Q

Free slack ? ( free float ) **FS ?

A

Amount of time a specific activity can be delayed without delaying ES

relative difference between values of TS for activities entering into same activity (only when 2 or more activities enter into same activity)
**FS is a relative difference between values for TS (always +)

18
Q

Calculating FS?

A

Fine lowest values of total slack for all activities entering into a specific activity then :

  • SUBTRACT value from values of TS for other activities entering into that same activity
19
Q

Project control process ?

A
  • meetings occur regularly
  • gather data on actual performance
  • record changes
  • monitor progress
20
Q

Project control ?

A
  • regularly gathering data on actual project performance
  • comparing actual performance to planned performance
  • taking corrective action immediately is actual performance is behind planned performance
  • must occur regularly throughout project
21
Q

Reporting period of project control process ?

A

Time interval at which actual project performance will be compared to planned performance

May be daily , weekly , biweekly

22
Q

During reporting period what data needs to be collected?

A
  1. Data in actual performance
    • actual time that activities were started /finished
    • actual costs expended &commited
    • earned value if the work completed
  2. Info on any changes to project scope, SCHED & budget
    • these changes must be initiated by customer or project team or result of unanticipated occurrence
23
Q

AF (actual finish) ?

A

Time at which a specific activity is actually completed

OBS220 (7 decks)

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