PreLim Flashcards
Means and include the cost of the entire construction of the project including all supervisions, materials, supplies, labor, tools, equipment, transportation and/or other facilities, furnished, used or consumed, without deduction on account of penalties, liquidated damages or other amounts withheld from payment to the contractor or contractors.
Construction Cost
Regarded as a valuation based on opinion or roughly made from imperfect or incomplete data. Not professedly exact in regard to the cost of certain work
Estimate
Indirect cost required to build the project
Overhead
Costs for any potential unforeseen work
Contingencies
Cost for compensation for performing the work
Profit
Distinct task in estimating
- To determine the probable real cost
- To determine the probable real time to build a project
Types of Estimates
- Approximate Estimates
- Detailed Estimates
Cost of various work item, such that cost per cubic meter of foundations, cost per kilogram of structural steel and cost per square meter of a finished room
Approximate Estimates
A comprehensive and well-defined organization of work items is essential to the preparation of an estimate for any project.
Organization of Estimates
Cost of project is prepared by determining the cost of materials, labor, equipment, subcontract work, overhead, and profit. Are generally prepared by contractors from a complete set of contract documents prior to submission of the bid or formal proposal to the owner
Detailed Estimates
Two basic approaches in Organizing Work for Estimating
- Construction Specification Institute (CSI)
- Work Breakdown Structure (WBS)
This approach is to identify work by the categories contained in the project’s written specifications
Construction Specification Institute
(CSI)
Approach is to identify work items by their location on the project
Work Breakdown Structure (WBS)
First step in preparing the cost estimates. Involves all materials in the project plus earth excavation and fill
Quantity Takeoff
Normally prepared for the purpose of submitting a bid for projects with a complete set of plans and specifications that have been prepared to construction
Lump-Sum Estimates
Cost per unit includes the furnishing of materials, labor, equipment, supervision, insurance, taxes, profit, and bonds for completely installing a unit
Unit-price basis