Two-Way Floor Design using Cross-Laminated Timber Spreadsheet
Two-Way Floor Design Based on NDS 2015, using Cross-Laminated Timber (CLT), by Finite Element Method
Two-Way Floor Design Based on NDS 2015, using Cross-Laminated Timber (CLT), by Finite Element Method
Shear Wall Design, using Cross-Laminated Timber (CLT), Based on NDS 2015
✓ Hierarchical charts: The traditional organizational chart structure can be used to show positions and relationships in a graphical, top-down format.
▪ Work breakdown structure (WBS): designed to show how project deliverables are broken down into work packages and provide a way of showing high-level areas of responsibility.
▪ Organizational breakdown structure (OBS): is arranged according to an organization’s existing departments, units, or teams, with the project activities or work packages listed under each department.You may see all project responsibilities by looking at OBS.
▪ Resource breakdown structure: hierarchical list of team and physical resources related by category and resource type that is used for planning, managing and controlling project.
✓ Assignment Matrix:
▪ Responsibility Assignment Matrix (RAM) shows the project resources assigned to each work package. It is used to illustrate the connections between work packages, or activities, and project team members.
▪ High-level RAM can define the responsibilities of a project team, group, or unit within each component of the WBS.
✓ Let the customer find defects.
✓ Detect them before product sent to customer.
✓ Use quality assurance to examine.
✓ Incorporate quality into the planning and designing of the project and product.
✓ Create a culture at organization.
✓ Benchmarking: comparing actual or planned project practices or the project’s quality standards to those of comparable projects (Internal or external) to identify best practices & generate ideas for improvement.
✓ Brainstorming: gather data creatively from a group of team members or subject matter experts.
✓ Cost-benefit analysis: Financial analysis tool used to estimate the strengths and weaknesses of alternatives in order to determine the best alternative in terms of benefits provided. It will help Project manager to
determine if the planned quality is cost effective.
✓ Cost of Quality (COQ): consists one or more of the following costs >>
Cost of Conformance
❖ Prevention costs: (Training, Document process, Equipment and Time to do the right).
❖ Appraisal costs: (Testing, Destructive testing loss and Inspection).
Cost of Nonconformance
❖ Internal Failure costs: (Rework & Scrap).
❖ External Failure costs: (Liabilities, Warranty work & Lost business).
✓ Flow Charts (process maps):
❖ Display the sequence of steps and the branching possibilities that exist for a process that transforms one or more inputs into one or more outputs.
❖ It shows activities, decision points, loops, parallel paths, and the overall order of processing by mapping the operational details of procedures that exist within a horizontal value chain. One version of value chain is called SIPOC (suppliers, inputs, process, outputs and customers) model.
❖ Flowcharts are useful in understanding and estimating the cost of quality for a process.
❖ They can be called (process flows or process flow diagrams) when they used to represent the steps in a process. Which is used for process improvement and identify quality defects .
✓ Logical data model:
❖ Visual representation of an organization’s data, described in business language and independent of any specific technology. Can be used to identify where data integrity or other quality issues can arise.
✓ Matrix diagrams:
❖ Help find the strength of relationships among different factors.
✓ Mind mapping:
❖ The mind-mapping technique may help in the rapid gathering of project quality requirements, constraints and relationships.
Quality checklists should incorporate with scope baseline. Usually developed based on historical information.
✓ Document analysis: analysis of different documents produced as part of the output of project control processes.
✓ Process analysis: identifies opportunities for process improvements also examines problems, constraints, and non-value-added activities that occur during a process.
✓ Root cause analysis (RCA): analytical technique used to determine the basic underlying reason that causes a variance, defect, or risk. It may underlie more than one variance and it may also use to solve these root causes.
✓ Affinity diagrams: organize potential causes of defects into groups.
✓ Cause-and-effect diagrams: (known as fishbone diagrams, why-why diagrams, or Ishikawa diagrams). These diagrams break down the causes of the problem, helping to identify the main or root cause of the problem.
✓ Flowcharts: show a series of steps that lead to a defect.
✓ Histograms: graphical representation of numerical data. Histograms can show the number of defects per deliverable, a ranking of the cause of defects, the number of times each process is noncompliant or other
representations of project or product defects .
✓ Matrix diagrams: show the strength of relationships among factors, causes, and objectives that exist between the rows and columns that form the matrix.
✓ Scatter diagrams: graph that shows the relationship between two variables.
✓ Structured, independent process used to determine if project activities comply with organizational and project policies, processes, and procedures .
✓ Usually conducted by a team external to the project such as (organization’s internal audit department, PMO or an external auditor to the organization).
✓ The subsequent effort to correct any deficiencies should result in a reduced cost of quality and an increase in sponsor or customer acceptance of the product.
✓ Quality audits may be conducted by internal or external auditors.
✓ Technical guidelines that may be applied during the design of a product for the optimization of a specific aspect of the design.
✓ DfX can control or even improve the product’s final characteristics .
✓ DfX result in cost reduction, quality improvement, better performance, and customer satisfaction.
✓ Finding solutions for issues or challenges.
✓ Effective and systematic problem solving is a fundamental element in quality assurance and quality improvement.
✓ Problems can arise as a result of the Control Quality process or from quality audits and can be associated with a process or deliverable.
✓ Reports can be graphical, numerical, or qualitative.
✓ Reports information can be used by other processes to take corrective actions to achieve quality expectations
✓ Reports may include all quality management issues escalated by the team; recommendations for process, project, and product improvements; corrective actions recommendations the summary of findings from the Control Quality process.
✓ Inputs to the Control Quality process and are used to evaluate the achievement of quality objectives.
✓ They may include dedicated checklists and detailed requirements traceability matrices.
✓ They can be created based on industry needs and the organization’s templates.
✓ Check sheets (Tally sheets): organize facts in a manner that will facilitate the effective collection of useful data about a potential quality problem.
They are especially useful for gathering attributes data while performing inspections to identify defects.
✓ Statistical sampling: involves choosing part of a population of interest for inspection. The sample is taken to measure controls and verify quality. Sample frequency and sizes should be determined during the Plan Quality Management process.
✓ Questionnaires and Surveys: gather data about customer satisfaction after the deployment of the product or service. The cost regarding defects identified in the surveys may be considered external failure costs in the COQ model and can have extensive cost implications for the organization .
✓ Determine if the product conforms to documented standards .
✓ They can be done on single activity or at final product.
✓ Inspection can be called reviews, peer reviews, audits, or walkthroughs.
✓ Inspections also are used to verify defect repairs.
✓ Determine whether or not a process is stable or has predictable performance.
✓ Upper and lower specification limits are based on the requirements and reflect the maximum and minimum values allowed.
✓ Upper and lower control limits are different from specification limits .
✓ The control limits are determined using standard statistical calculations and principles to ultimately establish the natural capability for a stable process .
✓ Project manager and appropriate stakeholder use controlled control limits which corrective action will be taken to prevent performance that remains outside control limits.
✓ Control charts can be used to monitor various types of output variables to help determine if the project management process is in control.
✓ The sample out of control if there are 7 values either above or below the mean. Or if there is any value outside the control limits .
✓ Documented results of Control Quality activities. They should be captured in the format that was specified in the quality management plan.
✓ The results of performing the Control Quality process are verified deliverables that become an input to the Validate Scope process for formalized acceptance.
✓ If there were any change requests or improvements related to the deliverables, they may be changed, inspected, and reverified.
✓ Processes and quality plan>>>>Manage quality.
✓ Deliverable>>>> Control quality.
✓ Defect repair>>>> weak performance is in product under operational conditions which means quality problem is in product will require.
✓ Prevention action>>>> New changes to ensure the future performance will change.
✓ Determines the information needs of the project stakeholders. These requirements are defined by combining the type and format of information needed with an analysis of the value of that information .
✓ Sources of information include (Stakeholder information, Number of potential communication channels, Organizational charts, Development approach, Internal and external information and Legal requirements).
✓ Methods includes (Conversation, meetings, Written documents, Databases and Websites).
✓ Factors that affect the choice of communication include (Urgency of the need for information, Availability and reliability of technology, Ease of use, Project environment (face-to-face or virtual) and Sensitivity and confidentiality of the information).
✓ Sample basic sender/receiver communication model: This model consists two parties (sender and receiver). This model is concerned with ensuring that message is delivered, rather than understood.
▪ Encode: The message is coded into symbols, such as text, sound or some other medium.
▪ Transmit message: The message is sent via a communication channel.
The transmission of this message may be compromised by various physical factors (unfamiliar technology) or inadequate infrastructure. Noise may result in loss of information in transmission/reception .
▪ Decode: Data received is translated by the receiver back into a form useful to the receiver.
✓ Sample Interactive communication model: This model consists two parties (sender and receiver), but recognizes the need to ensure the message has been understood.
▪ Acknowledge: Upon receipt of a message, the receiver may signal (acknowledge) receipt of the message, but this does not necessarily mean agreement with or comprehension of the message.
▪ Feedback/response: When the received message has been decoded and understood, the receiver encodes thoughts and ideas into a message and then transmits this message to the original sender. If the sender perceives that the feedback matches the original message, the communication has been successful. Feedback can be achieved through active listening.
✓ The sender is responsible for the transmission of the message, ensuring the information being communicated is clear and complete and confirm the message is correctly interpreted.
✓ The receiver is responsible for ensuring that the information is received in its entirety, interpreted correctly and acknowledged or responded to appropriately.
✓ Interactive communication: Between two or more parties performing a multidirectional exchange of information in real time like (Meetings, phone calls, video conferencing and instant messaging).
✓ Push communication: Sent or distributed directly to specific recipients who need to receive the information. Like (letters, memos, reports, emails, faxes, voicemail and blogs).
✓ Pull communication: Used for large complex information sets, or for large audiences, and requires the recipients to access content at their own discretion subject to security procedure. Like (web portals, intranet sites, e-learning, lessons learned databases or knowledge repositories).
✓ Communication style assessment: A technique used to assess communication styles and identify the preferred communication method for planned communication activities.
✓ Political awareness: Helps the project manager to plan communications based on the project environment as well as organization’s political environment. Political awareness concerns the recognition of power relationships, both formal and informal and also the willingness to operate within these structures.
✓ Cultural awareness: Understanding of the difference between individual and groups and adapting the project’s communication strategy in the context of these differences. This minimize misunderstandings and miscommunications that may result in cultural differences.
✓ The communications management plan is a component of the project management plan that describes how project communications will be planned, structured, implemented, and monitored for effectiveness.
✓ This communication management plan can include guidelines and templates for project status meetings, project team meetings, e-meetings, and email messages.
✓ It also contains “Escalation processes”.
✓ Communication competence: A combination of tailored communication skills that considers factors such as clarity of purpose in key messages, effective relationships and information sharing, and leadership behaviors.
✓ Feedback: information about reactions to communications or a deliverable. Feedback supports interactive communication between the manager, team and stakeholders. Example (coaching, negotiating and mentoring).
✓ Nonverbal: Examples of nonverbal communication include appropriate body language to transmit meaning through gestures, tone of voice, and facial expressions, eye contact and Mirroring.
✓ Presentation: Formal delivery of information and/or documentation. Clear and effective presentations of project information to relevant stakeholders include (Progress reports, Background information, General information about the project and specific information on a subject).
✓ Project reporting is the act of collecting and distributing project information.
✓ Reporting format may range from a simple communication to more elaborate custom reports.
✓ While work performance reports are the output of the Monitor and Control Project Work process, this process develops ad hoc reports, project presentations blogs.
✓ Active Listening: Involve acknowledging, clarifying and confirming, understanding and removing barriers that adversely affect comprehension .
✓ Meeting management: taking steps to ensure meetings meet their intended objectives effectively and efficiently.
✓ Networking: interacting with others to exchange information and develop contacts. Networks provide the manager and the team access to informal organizations to solve problems, influence actions of their stakeholders, and increase stakeholder support for the work and outcomes.
✓ Political awareness: assists the project manager in engaging stakeholders appropriately to maintain their support throughout the project.
✓ Brainstorming: used to generate and collect multiple ideas related to project.
✓ Interviews: are useful for obtaining confidential information.
✓ Focus Groups: (Interactive Discussion) Bring together prequalified stakeholders and subject matter experts to learn about their expectations and attitudes about proposed product/service. Need trained moderator.
✓ Questionnaires: designed to get quickly information of large number of respondents.
✓ Benchmarking: to generate ideas for improvement and new practices. Compare actual & planned.
✓ Voting: Used to classify and prioritize product requirements. (unanimity, majority and plurality).
✓ Autocratic decision making: one individual takes responsibility for making the decision.
✓ Multicriteria decision analysis: decision matrix to provide a systematic analytical approach for establishing criteria to evaluate and rank many ideas.
✓ Affinity diagrams: allow large numbers of ideas to be classified into groups for review and analysis.
✓ Mind mapping: Ideas created through individual brainstorming sessions to generate new ideas.
✓ Nominal group technique: Enhances brainstorming with a voting process used to rank the most useful ideas for prioritization. (Generate & prioritize).
✓ Observation and conversation (Job Shadowing): To cover hidden requirement.
✓ Facilitation: bring key stakeholders together to define product requirements. Workshops can be used to quickly define cross-functional requirements.
✓ Grid that links requirements to the deliverables that satisfy them.
✓ Ensure that each requirement adds business value.
✓ Provides a structure for managing changes to the product scope.
✓ Project Scope Statement include (Product scope description + deliverables + acceptance criteria + project exclusions).
✓ Project charter contains high level information while project scope statement includes detailed description of the scope components. They are progressively elaborated throughout the project.
✓ Project scope statement: description of the project scope, major deliverables and constraint.
✓ WBS: Hierarchical decomposition of the total scope of work to be carried out by the project team to accomplish the project objectives and create the required deliverables.
❖ Work package: The lowest level of the WBS is work package with a unique identifier. Each work package is part of a control account which is a management control point where scope, budget, and schedule are integrated and compared to the earned value for performance measurement. Each control account has two or more work packages. But work package is associated with a single control account.
❖ Planning package: Include one or more planning packages. A planning package is a WBS component below the control account and above the work package with known work content but without detailed schedule activities
✓ WBS dictionary: document that provides detailed deliverable, activity, and scheduling information about each component in the WBS. It’s a document that support the WBS because you can’t include all the information in the WBS.
Trend analysis: examines project performance over time to determine if performance is improving or deteriorating.
✓ Iterative scheduling with a backlog:
➢ It is a form of rolling wave planning based on adaptive life cycles.
➢ The benefit of this approach is that it welcomes changes throughout the development life cycle.
✓ On-demand scheduling:
➢ Used in a Kanban system. On-demand scheduling does not rely on a schedule that was developed previously but pulls work from a backlog as resources become available.
➢ It’s used in projects that evolve the product incrementally in operational environment.
✓ Activity List :
➢ Includes the schedule activities required on the project.
➢ Projects that use agile/rolling wave techniques the activity list will be updated periodically.
➢ Activity list includes activity identifier and scope of work description for each activity.
✓ Activity Attributes :
➢ Identifies component associated with each activity which evolves over time.
➢ At early stages it will include activity identifier, WBS ID, and activity name.
➢ At later stages/completed will include descriptions, predecessor, activities, successor activities, logical relationships, leads and lags resource requirements, constraints, and assumptions.
✓ Milestone List:
➢ Significant point or event in a project which has zero duration.
➢ They can be mandatory (required by contract) or optional.
✓ Technique used for constructing a schedule model in which activities are represented by nodes and are graphically linked by one or more logical relationships to show the sequence in which the activities are to be performed.
✓ Finish-to-start (FS) is the most commonly used type of precedence relationship .
✓ Two activities can have two logical relationships at the same time. However Multiple relationships between the same activities are not recommended.
✓ Mandatory dependencies: are legally or contractually required. They often involve physical limitations. They often called “hard logic or hard dependencies”.
✓ Discretionary dependencies: are established based on knowledge of best practices. Discretionary dependencies also called “logic, preferential logic, or soft logic).
✓ External dependencies: involve a relationship between project activities and non-project activities and usually outside the project team’s control.
✓ Internal dependencies: involve a precedence relationship between project activities and are generally inside the project team’s control.
✓ Lead is the amount of time a successor activity can be advanced with respect to a predecessor activity. Lead is often represented as a negative value for lag in scheduling software.
✓ Lag is the amount of time a successor activity will be delayed with respect to a predecessor activity. And it is often represented as a Positive value for lag in scheduling software.
✓ Law of diminishing returns: When one factor used to determine the effort required to produce a unit of work is increased while all other factors remain fixed a point .
✓ Number of resources: Increasing the number of resources to twice the original number of the resources does not always reduce the time by half, as it may increase extra duration due to risk.
✓ Advances in technology: Increase in the output of a manufacturing plant may be achieved by procuring the latest advances in technology may impact duration and resource needs.
✓ Motivation of staff: Project manager also needs to be aware of Student Syndrome (procrastination), when people start to apply themselves only at the last possible moment before the deadline.
❖ Parkinson’s Law where work expands to fill the time available for its completion.
✓ Technique for estimating the duration or cost of an activity or a project using historical data. It uses parameters from previous projects.
✓ This technique is used when there is a limited amount of detailed information about the project.
✓ Less costly and less time-consuming than other techniques but it is also less accurate.
✓ Technique in which an algorithm is used to calculate cost or duration based on historical data and project parameters .
✓ Uses a statistical relationship between historical data and other variables to calculate activity duration and cost.
✓ Using three-point estimates helps define an approximate range for an activity’s duration.
✓ Most likely (TM), Optimistic (TO) and Pessimistic (TP).
✓ Expected duration:
❖ Triangular distribution: TE= (TO + TM + TP) / 3
❖ Triangular distribution is used when there is insufficient historical data or when using judgmental data. This technique provides an expected duration and clarify the range of uncertainty
❖ Beta Distribution (PERT): TE= (TO + 4TM +TP) / 6
✓ Method of estimating project duration or cost by aggregating the estimates of the lower level components of the WBS.
✓ If an activity duration can’t be estimated with reasonable confidence, the work within the activity is decomposed into more detail.
✓ These estimates are then aggregated into a total quantity for each of the activity’s durations.
✓ Determine the amount of contingency and management reserve needed for the project.
✓ Contingency reserves are associated with the known-unknowns (unknown amount of work). It may be a percentage of estimated activity duration or fixed number of work periods.
✓ Management reserves are a specified amount of the project budget withheld for management control purposes and are reserved for unforeseen work that is within scope of the project. It addresses unknown-unknowns that can affect a project.
❖ Management reserve is not included in the schedule baseline but it is part of the overall project duration requirements.
✓ Technique used to generate the project schedule model and it’s an iterative process.
✓ Assessing the need to aggregate schedule reserves to reduce the probability of a schedule slip.
✓ Employs several other techniques such as critical path method, resource optimization techniques and modeling techniques.
✓ The critical path estimates the minimum project duration and determine the amount of schedule flexibility on the logical network paths within the schedule model.
✓ The critical path is the sequence of activities that represents the longest path through a project, which determines the shortest possible project duration.
✓ Total float (slack) is the amount of time an activity can be delayed without delaying the project completion date. On a critical path the total float is zero.
✓ Free float is the amount of time that a schedule activity can be delayed without delaying the early start date of any successor or violating a schedule constraint.
✓ Positive total float is caused when the backward pass is calculated from a schedule constraint that is later than the early finish date that has been calculated during forward pass calculation.
✓ Negative total float is caused when a constraint on the late dates is violated by duration and logic. Negative float analysis is a technique that helps to find possible accelerated ways of bringing a delayed schedule back on track.
✓ Resource leveling: A technique in which start and finish dates are adjusted based on resource constraints with the goal of balancing the demand for resources with the available supply. Resource leveling can often cause the original critical path to change. Available float is used for leveling resources.
✓ Resource Smoothing: A technique that adjusts the activities of a schedule model such that the requirements for resources on the project do not exceed certain predefined resource limits. Critical path is not changed and the completion date may not be delayed. Resource smoothing is very similar to resource leveling except smoothing uses total and free float.
✓ process of evaluating scenarios in order to predict their effect (positive or negative) on the project.
✓ It helps in assessing the feasibility and address the impact on unexpected situations.
✓ Crashing: Technique used to shorten the schedule duration for the least incremental cost by adding resources. Examples (overtime, additional resources). Crashing works only for activities on the critical path where additional resources will shorten the activity’s duration. Crashing does not always produce a viable alternative and may result in increased risk and/or cost.
✓ Fast Tracking: compression technique in which activities or phases normally done in sequence are performed in parallel for at least a portion of their duration. Fast tracking may result in rework and increased risk.
Fast tracking only works when activities can be overlapped to shorten duration at critical path. Fast tracking may also increase project costs.
✓ Schedule Baseline: Approved version of a schedule model that can be changed only through formal change procedure and used as comparison to actual results.
✓ Project Schedule: Output of a schedule model that presents linked activities with planned dates, durations milestones, and resources. The project schedule may be presented in summary form, sometimes referred
to as the master schedule or milestone schedule.
✓ Estimates or predictions of conditions and events in the project’s future based on information and knowledge available at the time of the forecast.
✓ The information is based on the project’s past performance and expected future performance based on corrective or preventive actions.
✓ This can include earned value performance indicators, and schedule reserve information.
➢ Involving team members in decomposition process can lead to better and more accurate.
➢ Three-point estimating >>>> takes risk and uncertainty into consideration.
➢ Prevention action >>>> reduce probability of negative schedule.
➢ Divergence & convergence >>>> increase schedule slip.
➢ Summery narrative >>>> can accompany diagram, approach used to sequence activities.
➢ Schedule reserve = Contingency reserve
➢ Parkinson’s Law >>>> using motivation system.
➢ Negative float analysis >>>> find possible accelerated ways to bring delay back on track.
➢ File change request >>>> if no option to recover schedule delay.
✓ Cost Estimates:
➢ Cost estimates include quantitative assessments of the probable costs required to complete project work and contingency amounts to account for identified risks, and management reserve to cover unplanned work.
➢ Cost estimates can be presented in summary form or in detail.
✓ Basis of Estimates:
➢ Supporting documentation should provide a clear and complete understanding of how the cost estimate was derived (assumptions, constraints, …).
✓ Business case: identifies the critical success factors for the project like financial success factors.
✓ Benefits management plan: includes the target benefits, such as net present value calculations, timeframe for realizing benefits, and the metrics associated with the benefits.
✓ Reviewing historical information can assist in parametric or analogous estimates.
✓ Historical information may include project characteristics (parameters) to develop mathematical models to predict total project costs.
✓ The expenditure of funds should be reconciled with any funding limits on the commitment of funds for the project.
✓ Approved version of the time-phased project budget, excluding any management reserves. is used as a basis for comparison to actual results.
✓ The work package cost estimates, along with any contingency reserves estimated for the work packages, are aggregated into control accounts. The summation of the control accounts makes up the cost baseline.
✓ Time-phased view of the cost baseline is typically displayed in the form of an S-curve.
✓ compares the performance measurement baseline to the actual schedule and cost performance.
✓ EVM integrates the scope baseline with cost and schedule baselines to form the performance measurement baseline (PMB).
✓ Cost and schedule variances are the most frequently analyzed measurements.
✓ Cost performance measurements are used to assess the magnitude of variation to the cost baseline and decide whether corrective or preventive action is required.
✓ examines project performance over time to determine if performance is improving or deteriorating.
✓ Graphical analysis techniques are valuable for understanding performance and comparison to future performance goals in the form of BAC vs EAC.
✓ Charts: In earned value analysis, three parameters of planned value, earned value, and actual cost can be monitored and reported.
✓ Forecasting: Project team may develop a forecast for the estimate at completion (EAC) that may differ from the budget at completion (BAC).
✓ Reserve analysis is used to monitor the status of contingency and management reserves for the project to determine if these reserves are still needed or if additional reserves need to be requested.
✓ This reserve may be used as planned to cover cost of risk response.
✓ when opportunities are captured and resulting in cost savings, funds may be added to the contingency amount, or taken from the project as margin/profit.
✓ Measure of the cost performance that is required to be achieved with the remaining resources in order to meet a specified management goal expressed as the ratio of the cost to finish the outstanding work to the remaining budget.
✓ Includes information on how the project work is performing compared to the cost baseline.
✓ Variances in the work performed and the cost of the work are evaluated at the work package level and control account level.
✓ Earned value analysis (EVA): 4 Key terms.
➢ PV =Planned Value: The value of the work planned to be completed to a point in time, usually the data date, or project completion.
➢ EV=Earned Value: The planned value of all the work completed (earned) to a point in time, usually the data date, without reference to actual costs.
➢ AC=Actual Cost : The actual cost of all the work completed to a point in time, usually the data date.
➢ BAC=Budget at Completion: The value of total planned work, the project cost baseline.
✓ Variance Analysis:
➢ Schedule Variance (SV): The difference between Earned Value and Planned Value.
❖ SV = EV – PV
❖ SV< 0, Behind schedule
❖ SV>0, Ahead of schedule
❖ SV=0, On schedule
➢ Cost Variance (CV): The difference between Earned Value and Actual Value.
❖ CV = EV – AC
❖ CV< 0, Over budget (Over planned cost)
❖ CV>0, Under budget (Under planned cost)
❖ CV=0, On budget (On planned cost)
➢ Schedule Performance Index (SPI): A measure of schedule efficiency expressed as the ratio of earned value to planned value.
❖ SPI = EV / PV
❖ SPI< 1, Behind schedule
❖ SPI> 1, Ahead of schedule
❖ SPI= 1, On schedule
➢ Cost Performance Index (CPI): A measure of the cost efficiency of budgeted resources expressed as the ratio of earned value to actual cost.
❖ CPI = EV / AC
❖ CPI< 1, Over planned cost
❖ CPI> 1, Under planned cost
❖ CPI= 1, On planned cost
✓ Trend Analysis:
➢ Estimate at Completion (EAC): The expected total cost of completing all work expressed as the sum of the actual cost to date and the estimate to complete.
❖ EAC = BAC/CPI If the CPI is expected to be the same for the remainder of the project.
❖ EAC = AC + BAC – EV If future work will be accomplished at the planned rate.
❖ EAC = AC + Bottom-up ETC If the initial plan is no longer valid.
❖ EAC = AC + [(BAC – EV) / (CPI x SPI)] If both the CPI and SPI influence the remaining work.
➢ Estimate to Completion (ETC): The expected cost to finish all the remaining project work.
❖ ETC = EAC – AC Assuming work is proceeding on plan, the cost of completing the remaining authorized work.
❖ ETC = Re-estimate Re-estimate the remaining work from the bottom up.
➢ Variance at Completion (VAC): The estimated difference in cost at the completion of the project.
❖ VAC = BAC – EAC
❖ Positive = Under planned cost
❖ Neutral = On planned cost
❖ Negative = Over planned cost
✓ To-Complete Performance Index (TCPI):
➢ A measure of the cost performance that must be achieved with the remaining resources in order to meet a specified management goal, expressed as the ratio of the cost to finish the outstanding work to the budget available.
➢ TCPI = (BAC – EV) / (BAC – AC) The efficiency that must be maintained in order to complete on plan ❖ Greater than 1.0 = Harder to complete
❖ Exactly 1.0 = Same to complete
❖ Less than 1.0 = Easier to complete
➢ TCPI = (BAC – EV) / (EAC – AC) The efficiency that must be maintained in order to complete the current EAC.
❖ Greater than 1.0 = Harder to complete
❖ Exactly 1.0 = Same to complete
❖ Less than 1.0 = Easier to complete
➢ Three-point estimate is more accurate than parametric estimate.
➢ Assessment is proper action that should be taken by project manager.
➢ Regression analysis >>>> based on one line estimation.
➢ Parametric estimate >>>> depend on expert judgement technique.
➢ Light weight estimation >>>> high level forecast project.
➢ Scope and schedule are adjusted to stay with cost constraint >>>> Strick budget.
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