What does the approximate method in estimating involve?

The approximate method in estimating commonly involves taking a broader approach to cost estimation by using a unit cost multiplied by the size of the building. This means that you assess the overall dimensions or square footage of the project and apply a predetermined cost per unit (such as per square foot or per cubic foot) to arrive at a quick estimate of the construction costs. This method is particularly useful in the early stages of project planning when detailed information about every aspect of the construction is not yet available. It allows for a faster, less granular calculation that can guide budget decisions and preliminary planning.

This contrasts with more detailed methods that may require listing every construction aspect with costs or evaluating overhead and wages individually, which typically involves more time and effort to account for each element of the project comprehensively. Using the approximate method can be advantageous for making initial assessments or quick comparisons without getting bogged down in extensive detail.