Electrical Estimating Methods

Electrical Estimating Methods 

Wayne J. Del Pico

Preference :

One of the most difficult tasks in estimating any project is to capture all of the costs involved in the project. Construction has many variables, and it is these variables that can have an impact of the way the estimator “sees” the work and ultimately its costs. The means and methods selected, or the plan to execute the work, will impact price signifi cantly. Another important variable is the bid documents; comprehensive, fully developed designs offer a better chance for the estimator to reach an accurate price. It is the goal of the estimator to arrive at the most accurate price for the cost of the work under a specifi c set of circumstances and conditions. While different estimators may see a project differently and thereby arrive at a different price for the work, all estimates share some basic components. Every cost estimate requires three basic components. The fi rst is the establishment of standard units of measure. The second component of an estimate is the determination of the quantity of units for each component, which is an actual measurement process: how many linear feet of wire, how many device boxes, and so on. The third component, and perhaps the most diffi cult to obtain, is the determination of a reasonable cost for each unit.

Electrical Estimating Methods

Content :
  • Components of an Estimate
  • Types of Estimates
  • Before Starting the Estimate
  • The Quantity Takeoff
  • Pricing the Estimate
  • Direct Costs
  • Indirect Costs
  • The Unit Price, Project Overhead Summary, and Estimate Summary Sheets
  • Prebid Scheduling
  • Bidding Strategies
  • Project Cost Control and Analysis
  • Raceways
  • Conductors and Grounding
  • Boxes and Wiring Devices
  • Starters, Boards, and Switches

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