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STRATEGIES FOR CONSTRUCTION HAZARD RECOGNITION by ALEX ALBERTA dissertation submitted to the Department of Civil,
Environmental, and Architectural engineering and the graduate school of the University of Colorado at boulder in partial fulfillment of the requirement for the degree of doctor of philosophy
2013
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This thesis
entitled Strategies of Health, Safety, and Environmental Hazard Recognition written by Alex Albert has been approved for the Department of Civil, Environmental, and Architectural Engineering Assistant Professor Matthew R. Hallowell) Professor Brian Kleiner) Professor Keith R. Molenaar) Professor Paul Goodrum) Professor Helen Lingard) Date The final copy of this thesis has been
examined by the signatories, and we Find that both the content and the form meet acceptable presentation standards Of scholarly work in the above mentioned discipline.
iii Albert, Alex (PhD, Civil Engineering)
Strategies of Health, Safety, and Environmental Hazard Recognition Thesis directed by Assistant Professor Matthew R. Hallowell Despite continual efforts to improve safety performance, the construction industry continues to account fora disproportionate number of occupational injuries. Apart from long-term physical and emotional distress
to workers and their families, these injuries have a devastating economic impact on the sustainability of the industry. One of the reasons that injury rates remain high is that workers are sometimes unable to recognize and respond to every hazard that is encountered in dynamic work environments.
This research seeks to transform safety performance by empirically testing the efficacy of three innovative hazard recognition strategies that are 
