CHAPTER 1 Flashcards
It means estimating of quantities of different items of works.
Quantity Surveying
They make sure that the costs of large construction and infrastructure projects are accurately estimated based on initial requirements and project specifications.
Quantity Surveyors
It is the art and science of predicting the cost of a project before it begins, based on the information available at the time.
Estimating
T YPES OF ESTIMATES
Preliminary Estimates
Detailed Estimates
Quantity Estimates
Bid Estimates
Cost Estimates
Gives idea on how much a total project will cost.
Done at the beginning of the project when only limited information isavailable.
Preliminary Estimates
Contains details of cost, rate, description of all required goods, etc.
Used as a budget estimate.
Detailed Estimates
Includes complete quantitative details of material required to complete the project along with its cost
Quantity Estimates
Calculated with an expectation to win a project.
Calculated based on standard industry costs or past projects.
Bid Estimates
Types of Cost Estimates
- Historical Estimates
- Parametric Estimates
- Bottom-up Estimates
Taken from past similar projects. Usually used for residential projects.
Less accurate and is used only for initial stages.
Historical Estimate
Taken using standard per unit rate and then multiplies with the dimensions.
Parametric Estimate
The basic work is estimate first and then progressively costs the more complex works.
Should be used only when sufficient information is available.
Bottom-up Estimate
It offers detailed and uniform information to all bidders regarding the project with the aim of soliciting competitive bids.
Invitation to Bid (ITB)
Variety of operations, procedures, and indirect costs that are not directly linked to construction but are still essential for executing the project successfully.
Includes project management, safety compliance, temporary facilities(TEMFACIL), and waste removal.
General Conditions
Terms and conditions or provisions which establish specific and peculiar rights and obligations of the parties involved in the Contract.
Modifies or supplements the general conditions to accommodate specific requirements of a project.
Special Conditions