Contents
What are the different classes of estimate?
Cost estimate classifications
| Estimate class | Name | Purpose |
|---|---|---|
| Class 4 | Intermediate | Concept study or feasibility |
| Class 3 | Preliminary | Budget, authorization, or control |
| Class 2 | Substantive | Control or bid/tender |
| Class 1 | Definitive | Check estimate or bid/tender |
What is a Class 3 estimate?
Class 3 estimates are typically prepared to support full project funding requests, and become the first of the project phase “control estimates” against which all actual costs and resources will be monitored for variations to the budget. They are used as the project budget until replaced by more detailed estimates.
What is a Class 5 estimate?
Class 5 estimates are generally prepared based on very limited information, and subsequently have wide accuracy ranges. Class 5 estimates, due to the requirements of end use, may be prepared within a very limited amount of time and with little effort expended—sometimes requiring less than a day to prepare.
What are the three types of estimation?
There are different methods for estimation that are useful for different types of problems. The three most useful methods are the rounding, front-end and clustering methods.
What are the three main components of a cost estimate?
Most often cost estimating professionals break down the total cost of a project into these three elements: Direct Cost, Indirect Cost, and Markup.
Can you use statistical assessments in model specification?
You can use statistical assessments during the model specification process. Various metrics and algorithms can help you determine which independent variables to include in your regression equation. I review some standard approaches to model selection, but please click the links to read my more detailed posts about them.
What should be included in the model specification process?
For more information about this process, read 5 Steps for Conducting Scientific Studies with Statistical Analyses. Specification should not be based only on statistical measures. In fact, the foundation of your model selection process should depend largely on theoretical concerns.
Which is the best description of a specification?
Specification: A detailed description of the dimensions, construction, workmanship, materials etc., of work done or to be done, prepared by an architect, engineer etc. What is specification? Let’s look at what we mean when we talk about a specification; here is an official definition:
What should be included in a construction specification?
In construction, the specification can cover everything: Site establishment. Contract type. Asset performance criteria. Systems and product quality. Applicable standards and how they are executed.