INFERENCES ON THE RELIABILITY LEVELS OF LOST LABOUR ESTIMATING METHODS

Joel Oboshior, Joseph Eiziele Ahianba, Samuel Egwunatum

Abstract


Recent studies conducted in the construction industry and particularly by the Association for the Advancement of Cost Engineering (AACE) recommended practice No. 25R-03 on lost labour estimation has shown that all the methods used for quantifying lost labour in construction projects have some varying degrees of accuracy occasioned by the non-unified and standardized approach of measurement. The studies have identified the limitations of the underlying measurement principle as not being an exact science. Arising from the transitory tendencies exhibited by these methods. This paper investigated the severity of the accompanying degrees of inaccuracy in the methods. This was conducted through a well structured questionnaire by mapping out the sampling frame to select the sample size of respondents. By instrument of mean score the research was able to report on the reliability levels of the estimating methods. This will alleviate the credibility and spurious doubt on any of the methods demanded by clients for the purpose of measurement and award of claims.

Keyword: Lost labour, estimating method, reliability level, limitations, probability sampling


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