Podcast
Questions and Answers
What is the primary purpose of quantity take-off in construction management?
What is the primary purpose of quantity take-off in construction management?
- Measuring specific quantities
- Extracting quantities from drawings (correct)
- Creating a bill of quantities
- Predicting project costs
Which output is typically associated with cost estimating?
Which output is typically associated with cost estimating?
- Bill of materials
- Cost estimate (correct)
- Bill of quantities
- Detailed unit price analysis
How do well-prepared estimates and bills of quantities benefit project management?
How do well-prepared estimates and bills of quantities benefit project management?
- They solely focus on labor costs.
- They allow for the creation of an unrealistic project schedule.
- They eliminate all project risks.
- They provide insights into scope, resource requirements, and potential constraints. (correct)
What does construction planning typically include?
What does construction planning typically include?
What is a key outcome of effective construction scheduling?
What is a key outcome of effective construction scheduling?
What distinguishes planning from scheduling in construction management?
What distinguishes planning from scheduling in construction management?
What is the output of quantity surveying?
What is the output of quantity surveying?
What is typically NOT a component of construction planning?
What is typically NOT a component of construction planning?
What is the primary purpose of arranging a timeline in project management?
What is the primary purpose of arranging a timeline in project management?
Which of the following represents a Gantt chart feature?
Which of the following represents a Gantt chart feature?
What are milestones in a Gantt chart?
What are milestones in a Gantt chart?
What does drawing a dependency line between tasks indicate?
What does drawing a dependency line between tasks indicate?
Which technique is developed for handling unpredictable project activities?
Which technique is developed for handling unpredictable project activities?
What differentiates the Critical Path Method from PERT?
What differentiates the Critical Path Method from PERT?
In the sample problem, what is the total duration of the project?
In the sample problem, what is the total duration of the project?
Which task is not a predecessor for any other task in the sample problem?
Which task is not a predecessor for any other task in the sample problem?
Which activities must be completed before activity G can start?
Which activities must be completed before activity G can start?
What defines a dummy activity in project management?
What defines a dummy activity in project management?
What is considered the optimistic time estimate in project management?
What is considered the optimistic time estimate in project management?
Which of the following statements is true regarding project network rules?
Which of the following statements is true regarding project network rules?
What is the method to calculate the expected time for completing a task?
What is the method to calculate the expected time for completing a task?
In the provided estimated time table, what is the expected time for Activity C?
In the provided estimated time table, what is the expected time for Activity C?
Which activities must be completed prior to starting both activities J and K?
Which activities must be completed prior to starting both activities J and K?
How many time estimates are considered when determining completion time for a task?
How many time estimates are considered when determining completion time for a task?
What does a node in a PERT chart represent?
What does a node in a PERT chart represent?
Which step is NOT part of creating a PERT chart?
Which step is NOT part of creating a PERT chart?
What characterizes a Burst Activity in a PERT chart?
What characterizes a Burst Activity in a PERT chart?
In PERT analysis, what is the purpose of using optimistic, pessimistic, and likely estimates for activity durations?
In PERT analysis, what is the purpose of using optimistic, pessimistic, and likely estimates for activity durations?
What is the main focus of a Task-focused project diagram as compared to a PERT diagram?
What is the main focus of a Task-focused project diagram as compared to a PERT diagram?
Which statement best describes the role of arrows in a PERT chart?
Which statement best describes the role of arrows in a PERT chart?
Which of the following correctly represents a characteristic of deterministic approaches to project scheduling?
Which of the following correctly represents a characteristic of deterministic approaches to project scheduling?
What does an event signify in the context of PERT and CPM charts?
What does an event signify in the context of PERT and CPM charts?
What is the primary purpose of calculating the critical path in project management?
What is the primary purpose of calculating the critical path in project management?
Which of the following represents the earliest possible date an activity can start?
Which of the following represents the earliest possible date an activity can start?
In drawing node diagrams for the critical path method, what is a recommended practice?
In drawing node diagrams for the critical path method, what is a recommended practice?
How is the earliest finish time (EF) calculated?
How is the earliest finish time (EF) calculated?
What is the last possible date to start an activity without delaying the project referred to as?
What is the last possible date to start an activity without delaying the project referred to as?
What would be the value of ES for the first activity in a project timeline?
What would be the value of ES for the first activity in a project timeline?
Which calculation is performed to determine the latest finish time (LF) of an activity?
Which calculation is performed to determine the latest finish time (LF) of an activity?
Which of the following metrics is not directly related to the forward pass calculation?
Which of the following metrics is not directly related to the forward pass calculation?
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Study Notes
Contracting and Estimating
- Quantity take-off is used in project management for extracting measurements from drawings
- Cost estimating is used for predicting project costs
- Quantity surveying is used for measuring quantities in a project, and creating a bill of quantities
Construction Planning and Scheduling
- Planning and scheduling are essential aspects of construction project management
- Construction projects are unique and require the application of experience and judgment to ensure optimal performance
- Construction planning defines project objectives, requirements, and constraints
- Construction scheduling involves creating a detailed timeline for project tasks
Gantt Chart
- Gantt charts are a visual way of organizing and scheduling tasks
- Arrange tasks on the chart with duration, start and end dates, and dependencies
- Milestones can be added as key dates or deliverables
PERT and CPM Scheduling Techniques
- PERT (Project Evaluation and Review Technique) is used for projects with uncertain completion times
- CPM (Critical Path Method) is used for projects with predictable completion times
- CPM uses a statistical algorithm with a defined start and end time
- PERT is probabilistic and estimates activity durations optimistically, pessimistically, and realistically
- CPM is deterministic and assumes activity durations are known
- Both PERT and CPM use network analyses to map project activities
### PERT
- PERT charts show the sequence and dependencies of project tasks
- PERT uses three time estimates for each task: optimistic, pessimistic, and most likely
- The expected time for completing a task in PERT is calculated using: (Optimistic Time + (4 * Most Likely Time) + Pessimistic Time) / 6
CPM
- CPM charts calculate the earliest and latest start and finish times (ES, EF, LS, LF) for each task
- CPM uses a forward pass calculation to determine ES and EF, and a backward pass to determine LS and LF
- The critical path in CPM refers to the longest sequence of activities in a project, where any delay in a critical path task will delay the entire project
Critical Path Formula
- The ES of the first activity on any path is always 1, as it represents the project start. The ES of all other activities is calculated by adding 1 to the EF of the preceding activity
- The EF is calculated by adding the ES, task duration, and subtracting 1.
- The LF of the last activity on any path is always the same, as it represents the project end.
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