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ReferencesNavigation arrowAuthorsNavigation arrowWilliam Schmitz
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William Schmitz

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Publications by William Schmitz (bibliography)

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1992
 
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Griffith, Debra A., Reddan, William and Schmitz, William (1992): Heat Stress Associated with the Use of Tyvek Coveralls in Asbestos Removal Inspection. In: Proceedings of the Human Factors Society 36th Annual Meeting 1992. pp. 733-737.

“This two-part study was undertaken to determine if increased heat stress was associated with the use of Tyvek suits at a given temperature and workload, and the effect of ambient temperature on the level of heat stress experienced within the suit. In the first part of the study the independent variables were: ambient condition (22.2{deg} C and 50% rh vs. 32.2{deg} C and 60% rh) and workload (20% vs. 40% of maximum VO{sub:2}). The eight subjects ranged in age from 27 to 63, with equal numbers of men and women. Treadmill walking was used to simulate workload. Each experimental run lasted 45 minutes. In the second part, workload was fixed at 40% of maximum VO{sub:2} and the suits were not worn. All other conditions were the same. Subjects (female, age 32; male, age 32; male, age 63) were chosen from the original eight. Results for the two parts were compared. Wearing the suit increased the heat stress upon an individual. Rectal temperature increased by an average of .17{deg} C, heart rate by 16 bpm, average heat stored by 54 kcals, and average sweat loss by .73 liters/m{squared}. Ambient temperature appeared to have a positive effect on the level of heat stress experienced within the suit. There were confounds, indicating a need for further study. It is recommended that ACGIH guidelines for work-rest ratio determination be followed, providing one adds 6{deg}-11{deg} C to the calculated ambient WBGT before entering the chart. These findings agree with the TLV WBGT Correction factors for clothing provided in the 1991 ACGIH guidelines on heat stress and the findings of Paull and Rosenthal (1987).”

© All rights reserved Griffith et al. and/or Human Factors Society

 
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Jun 20

“ ...that strange new zone between medium and message. That zone we call the interface ”

-- Steven Johnson, 1997

 
 

Featured chapter

Read the fascinating history of Wearable Computing, told by its father, Steve Mann

Read Steve's chapter !

 
 

Latest books

The Social Design of Technical Systems: Building technologies for communities
by Brian Whitworth and Adnan Ahmad

 
Start reading

The Encyclopedia of Human-Computer Interaction, 2nd Ed.
by Mads Soegaard and Rikke Friis Dam

 
Start reading
 
 

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