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Construction Cost Estimation. Michael Mincic Civil Engineering Technology Department 22 February 2007. Civil Engineering Technology at CSU-Pueblo. Bachelor of Science CET Four year degree accredited by the Accreditation Board for Engineering and Technology TAC-(ABET). Outline.

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Construction cost estimation

Construction Cost Estimation

Michael Mincic

Civil Engineering Technology Department

22 February 2007


Civil engineering technology at csu pueblo
Civil Engineering Technology at CSU-Pueblo

  • Bachelor of Science CET

    • Four year degree accredited by the Accreditation Board for Engineering and Technology TAC-(ABET)


Outline
Outline

  • Construction Cost Estimating

  • Bid Documents

  • The Estimation Process

  • Cost of Construction Labor & Equipment


Construction cost estimating
Construction Cost Estimating

  • Estimating is not an exact science!

  • Construction knowledge

  • Common sense

  • Good judgment

  • Lots of Luck!!!


Types of estimates
Types of estimates

  • The construction process players

    • The Owner

    • The Designer

    • The Contractor

  • Approximate Estimates

  • Detailed Estimates


Organization of estimates
Organization of Estimates

  • See Steps for preparing a detailed estimate (pg. 8, Table 1.2)

  • CSI Format

    • Building Construction

    • 16 major divisions

  • WBS Format

    • Heavy Engineering


Awareness of estimation items

Quantity Take-Off

Labor and Equipment crews

Checklist of Operations

Bid Documents

Addenda & Change Orders

Overhead

Material Taxes

Labor Costs

Workmen’s Compensation Insurance

Labor Burden

Bonds

Insurance

Awareness of Estimation Items


Bid documents contract documents
Bid Documents & Contract Documents

  • Bid Document

    • Before Agreement

  • Contract Document

    • After Agreement

  • Architect

    • building type

  • Engineer

    • Heavy/Industrial


Bid documents
Bid Documents

  • Contract Requirements

  • Arrangement of Contract Documents

    • Business/legal matters

    • Technical matters

  • Building Construction Specs

  • Heavy/Highway Specs


Bid documents1
Bid Documents

  • Requirements

  • Bid Solicitation

  • Instructions to Bidders

    • Time of completion

    • Obligation of Bidder

  • Information Available to Bidders

  • Bid Forms

    • Lump sum

    • Unit price


Drawings
Drawings

  • Heavy/Highway

    • Plan, profile, earthwork, cross section, details, schedules, etc.

  • Building Construction Drawings

    • Civil

    • Architectural

    • Structural


Decision to bid
Decision to Bid

  • Assess the desire to Bid

    • Do we want to bid this project?

    • Do we have the skills to complete this project?

    • Do we have the available labor to complete this project?

    • Do we have the necessary equipment to complete this project?

    • Do we have experience with similar projects?

    • How busy are we?

    • Can we bond for the additional work with the existing projects?


Additional decisions to bid
Additional Decisions to Bid

  • Geographic Location

  • Complexity of the Project

  • Owner’s Reputation

  • Designer’s Reputation

  • Do we want to expand?


Sources of labor rates
Sources of Labor Rates

  • Union Wage

    • Predetermined by contractor’s union

  • Open-Shop

    • Agreed upon by the employer and employee

  • Prevailing rate

    • Dependant on the local area

  • The Cost of Labor


Employee costs
Employee Costs

  • Social Security Tax

  • Unemployment Compensation Tax

  • Worker’s Compensation Insurance

  • Public Liability & Property Damage Insurance

  • Fringe Benefits


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