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Scope

1.1 This practice covers a procedure for measuring cost risk for buildings and building systems and other constructed projects, using the Monte Carlo simulation technique as described in Guide E1369.

1.2 A computer program is required for the Monte Carlo simulation. This can be one of the commercially available software programs for cost risk analysis, or one constructed by the user.

Significance and Use

Measuring cost risk enables owners of buildings and other constructed projects, architects, engineers, and contractors to measure and evaluate the cost risk exposures of their construction projects. Specifically, cost risk analysis (CRA) helps answer the following questions:

What are the probabilities for the construction contract to be bid above or below the estimated value?

How low or high can the total project cost be?

What is the appropriate amount of contingency to use?

What cost elements have the greatest impact on the project’s cost risk exposure?

CRA can be applied to a project's contract cost, construction cost (contract cost plus construction change orders), and project cost (construction cost plus owner's cost), depending on the users' perspectives and needs. This practice shall refer to these different terms generally as “project cost.”

Keywords

cost model; cost risk analysis; Monte Carlo simulation; sensitivity analysis; UNIFORMAT II; BCRA (building cost risk analysis); Building economics; Cost analysis (of building constructions); Project management; Risk analysis; ICS Number Code 91.010.20 (Contractual aspects)

To find similar documents by ASTM Volume:

04.11 (Building Constructions (I): E72 - E2110)

To find similar documents by classification:

91.010.20 (Contractual aspects)

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