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Elazouni, A M and Metwally, F G (2007) Expanding Finance-Based Scheduling to Devise Overall-Optimized Project Schedules. Journal of Construction Engineering and Management, 133(01), 86–90.

Goldenberg, M and Shapira, A (2007) Systematic Evaluation of Construction Equipment Alternatives: Case Study. Journal of Construction Engineering and Management, 133(01), 72–85.

Hanna, A S, Chang, C, Lackney, J A and Sullivan, K T (2007) Impact of Overmanning on Mechanical and Sheet Metal Labor Productivity. Journal of Construction Engineering and Management, 133(01), 22–28.

  • Type: Journal Article
  • Keywords: Construction management; Scheduling; Labor; Productivity; Mechanical systems; Metals; Sheets;
  • ISBN/ISSN: 0733-9364
  • URL: https://doi.org/10.1061/(ASCE)0733-9364(2007)133:1(22)
  • Abstract:
    This paper details the impacts of overmanning on labor productivity for labor-intensive trades, namely mechanical and sheet metal contractors. Overmanning, as used in the following research, is defined as an increase of the peak number of workers of the same trade over the actual average manpower used throughout the project. The paper begins by reviewing literature on the effects of overmanning on labor productivity. Via a survey to various contractors, data were collected from 54 mechanical and sheet metal projects located across the United States. Various statistical analysis techniques are then performed to determine quantitative relationship between overmanning and labor productivity. These techniques include the stepwise method, T-test, P -value tests, analysis of variance, and multiple regression analysis. The results indicate a 0–41% loss of productivity depending on the level of overmanning and the peak project manpower. Cross-validation is performed to validate the final model. Finally, a case study is provided to demonstrate the application of the model.

Jung, Y and Kang, S (2007) Knowledge-Based Standard Progress Measurement for Integrated Cost and Schedule Performance Control. Journal of Construction Engineering and Management, 133(01), 10–21.

Li, Y, Nie, X and Chen, S (2007) Fuzzy Approach to Prequalifying Construction Contractors. Journal of Construction Engineering and Management, 133(01), 40–49.

Liu, L and Zhu, K (2007) Improving Cost Estimates of Construction Projects Using Phased Cost Factors. Journal of Construction Engineering and Management, 133(01), 91–95.

Lucko, G, Vorster, M C and Anderson-Cook, C M (2007) Unknown Element of Owning Costs—Impact of Residual Value. Journal of Construction Engineering and Management, 133(01), 3–9.

Moussa, M, Ruwanpura, J and Jergeas, G (2007) CTAN for Risk Assessments Using Multilevel Stochastic Networks. Journal of Construction Engineering and Management, 133(01), 96–101.

Polat, G, Arditi, D and Mungen, U (2007) Simulation-Based Decision Support System for Economical Supply Chain Management of Rebar. Journal of Construction Engineering and Management, 133(01), 29–39.

Salman, A F M, Skibniewski, M J and Basha, I (2007) BOT Viability Model for Large-Scale Infrastructure Projects. Journal of Construction Engineering and Management, 133(01), 50–63.

Subprasom, K and Chen, A (2007) Effects of Regulation on Highway Pricing and Capacity Choice of a Build-Operate-Transfer Scheme. Journal of Construction Engineering and Management, 133(01), 64–71.