Slip, trip and fall injuries in construction and transportation.
NIOSH 2002 Sep; :1-24
The initially proposed work was to evaluate the effects of various soil amendments on the occurrence of slip trip and fall injuries in the construction and transportation industries. These types of injuries represent a total lifetime cost of injuries in the ten's of billions of dollars. It was initially believed that the insight required for the work could be obtained from simple modulus measurements in the vertical and horizontal direction. To this end, initially modeling and testing was performed. It was then determined that the vertical modulus while coupled to the horizontal shear strength measure, needed to be independently evaluated. Vertical modulus was also found to be a secondary factor in the occurrence of slip as noted in the relevant literature. Therefore the emphasis was shifted to developing methods to measure the require shear failure of soil and boot interface. This effort has focussed on the development of test protocol for the measurement of kinetic coefficient ofmction for the heel slide gait pattern and the sole slide gait pattern. The two failure modes, slipping and shear failures of the soil are considered using the approach taken in the work. The apparatus while promising does not at this point produce sufficiently repeatable measurements on soil tat soil amendments can be evaluated. It will be necessary therefore to step back and evaluate both the soil preparation system and the test apparatus to determine if measurements of kinetic coefficient of mction can be sufficiently reliable on soil surfaces to make meaningful conclusions based on in-situ measurements of the soil. This is the first effort found in the literature to join the work in terramechanics literature to the ergonomics of waling on unimproved surfaces. While the initial barriers are significant, the long term potential for the effort is great and could greatly impact a very costly type of lost time injury.
Injuries; Injury-prevention; Construction; Construction-industry; Construction-workers; Transportation; Transportation-industry; Transportation-workers; Traumatic-injuries; Failure-analysis; Walking-surfaces; Soil-analysis; Human-factors-engineering; Measurement-equipment; Mechanical-properties-testing; Kinetics; Traumatic-injuries; Footwear; Testing-equipment
Mechanical Engineering Department, University of Maine, Orono, ME 04469-5711, USA
Final Grant Report
NTIS Accession No.
Disease and Injury; Traumatic Injuries
National Institute for Occupational Safety and Health
University of Maine