Chapter 8: Schedule

Question 1

C8 Schedule: Terms and terminology

Answer 1

• Lag - waiting time between activities. После залития бетона, надо подождать несколько дней до начала след работ
• Lead - показывает, что активность может стартовать befiore its predecessor is completed, в параллель.
• Path convergence (схождение) - activity has 2+ предшествующих активности
• Path divergence (расхождение) - activity has 2+ последующих активности. Оба пункта это индикаторы риска для impacted activities
• Slack = Float

Question 2

Network diagram

Answer 2

• В самом простом виде - просто показывает зависимости
• If is made calendar-based - становится “schedule network diagram”

Question 3

Precendence Diagramming Method (PDM)

Answer 3

Boxes to represent activities and arrows to show dependencies

Мне кажется все эти FS, FF и пр. это как раз про этот метод

———- не написано у Риты ————-
Также называется “activity on node (AON) method”

Question 4

Types of Dependencies

Answer 4

Может быть микс! См. картинку

По обязательности

• Mandatory (=Hard logic), has to work that order.
• Discretionary (=preferred, preferential, soft logic) - есть другие способы решить, но пока выбрали этот

По возможности влияния

• External - внешнее ограничение (в т.ч. соседний проект/вендор/правительство)
• Internal - internal to the project and something the project team can control

Question 5

Methods for Estimating Activity Durations

Answer 5

Описания см. Chapter 3 “Estimating methods”

Predictive estimating

• Analogous (top-down)
• Bottom-up
• Parametric
  
  • Regression Analysis (Scatter Diagram)
  • Learning Curve (by example)
• Single-point E (One-point Estimating)
• Three-Point E
  
  • Triangular Distribution (Simple Average)
  • Beta Distribution (Weighted Average)

Adaptive estimating

• Affinity
• T-shirt Sizing
• Planning Poker

Question 6

Activity Durations - Methods for Data Analysis

Answer 6

See “Data Analysis methods” in Chapter 3

• Alternatives Analysis
• Reserve analysis
  • Contingency Reserves
  • Management Reserves

Question 7

Methods for Decision Making Activity Durations

Answer 7

See “Decision-Making approaches and methods” in Chapter 3

• Plurality, Majority, Unanimity
• Roman Voting
• Fist of Five

Question 8

Schedule Network Analysis

Answer 8

Создаем schedule model, until the proj schedule is approved

В отличие от udeny единичку Рита почему-то нигде не прибавляет!

Critical Path Method

• Free float
  The amount of time an activity can be delayed without delaying the next activity’s ES date.
• Total float
  The amount of time an activity can be delayed without delaying the proj end date. LS-ES or LF-EF !!!
• Project float (=positive total float)
  This is the total time the project can be delayed без нарушения закомиченной клиенту/менеджменту даты.
• Forward / backward pass

Question 9

Methods for Schedule Compression

Answer 9

Применяется в: Develop Schedule (Planning), Control Schedule, Integrated Change Control

• Reduce risks (best option?) - investigate activity estimates that contain the most unknowns. Reduce or eliminate these risks thus decreasing the schedule.
• Fast tracking
  Allows project phases to overlap. Минусы: rework, increases risk, more attention to communication
• Crashing
  Adding resources to reduce the project duration. Crashing adds costs (and may add risks) to the project.
• Cut quality - might add risk
• Reduce scope - impact on customer
• Work overtime - LAST RESORT
• Say it can’t be done - если не сработали другие варианты
• Leads and Lags - тоже compression method, как указано на p.223

Question 10

Plan-driven schedule representation

Answer 10

• Network diagram - если надо показать interdependencies, посчитать critical path, show length of the project
• Milestone chart - если надо report to senior management
• Bar chart - weak planning, but effective to track progress, report to the team

Question 11

Methods for Control Schedule

Answer 11

• Measurement
  
  • For plan-driven: EVM
  • Change-driven: velocity, burnup/down charts
• Reestimating - в целом проект перепланируем в определенных точках, при необходимости делаем adjust performance measurement baseline (через CR, видимо)