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The ultimate goal for respirator mask designers is computer-aided design. Mask design, however, is a very complex operation, with many different interrelationships. Current knowledge does not allow significant incorporation of physiological information into mask design. Rather, physiological information is usually gathered during mask evaluation, after the… (More)
The advent of hypertext and multimedia has opened up tremendous opportunities for online documentation. Traditional methods of document design often prove inadequate for coping with the complexity of large online documentation projects. We propose that the principles of object-oriented design, originally developed to address software complexity, can also be… (More)
Respirator performance rating tables have been constructed for hot, humid (29 degrees C, 95% RH); hot, dry (49 degrees C, 30% RH); and cold, dry (-32 degrees C, 70% RH) conditions. These tables convey expected wearer performance percentages compared to unmasked workers for various mask elements and work rates. The hot, humid condition was found to be the… (More)
The Performance Rating Table (PRT) is introduced as a means to separate mask-wearer performance by causative factors. The PRT shows which mask factors require design attention and how the mask affects different users.
The respirator performance rating table (PRT) scheme has been offered as a way to organize physiological information to be useful for mask design. Designers do not usually deal exclusively with one kind or another of mask physiological effect. This paper presents normal mask design modules and how they relate to mask physiological effects as given in the… (More)