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Korpela, J, Miettinen, R, Salmikivi, T and Ihalainen, J (2015) The challenges and potentials of utilizing building information modelling in facility management: the case of the Center for Properties and Facilities of the University of Helsinki. Construction Management and Economics, 33(01), 3-17.

Lingard, H and Turner, M (2015) Improving the health of male, blue collar construction workers: a social ecological perspective. Construction Management and Economics, 33(01), 18-34.

Lingard, H, Peihua Zhang, R, Blismas, N, Wakefield, R and Kleiner, B (2015) Are we on the same page? Exploring construction professionals’ mental models of occupational health and safety. Construction Management and Economics, 33(01), 73-84.

Sacks, R, Whyte, J, Swissa, D, Raviv, G, Zhou, W and Shapira, A (2015) Safety by design: dialogues between designers and builders using virtual reality. Construction Management and Economics, 33(01), 55-72.

Su, Y and Lucko, G (2015) Synthetic cash flow model with singularity functions for unbalanced bidding scenarios. Construction Management and Economics, 33(01), 35-54.

  • Type: Journal Article
  • Keywords:
  • ISBN/ISSN: 0144-6193
  • URL: https://doi.org/10.1080/01446193.2015.1012527
  • Abstract:
    Construction contractors may utilize unbalanced markup bidding strategies, e.g. front-loading, to seek more beneficial cash flows, or even protect their target profits. A difference between ethical and unethical unbalanced bidding is whether the bid has been mathematically or even materially modified: the former may be allowable, but the latter should be rejected, as it fails to cover even the cost of later activities. Unbalanced bidding adds to the complexity of cash flow models and requires a new model that can calculate different scenarios accurately and efficiently. Basic new theory is explored for unbalanced bidding in cash flow models by employing the range-based class of singularity functions. First, a new synthetic balanced cash flow model that can accurately consider the time value of money (TVM) and retainage is derived to serve as the foundation; second, various unbalanced markup functions including two-phase, linear, and non-linear types are defined both cumulatively and non-cumulatively; third, the performance of the extended synthetic cash flow model for unbalanced bidding is investigated mathematically.