A development code calls for that out of doors air air flow premiums conform to ASHRAE sixty two (latest version). A clothier has designed in line with ASHRAE 62-1989, multi-unit smoking-permitted eating places. For the shopper portion of a cafe having an occupancy of 2 hundred humans, the air flow fee is 2 hundred humans x 20 cfm/person = 4000 cfm. The fashion designer now has a task for an additional approximately exact eating place unit situated in a geographic quarter coated via the aforementioned code. Addendum e got rid of the assertion from desk 2 that air flow charges accommodate "a reasonable quantity of smoke". Now it truly is uncertain even if the air flow expense approach of part 6.1 of ASHRAE typical 62-1999, using desk 2, can now be used to calculate air flow premiums for multi-unit smoking-permitted eating places.
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Additional info for ASHRAE Standard 62-1999, Ventilation For Acceptable Indoor Air Quality
O. Box 5726, 3901 Carmichael Avenue, Jacksonville, FL 32207; and supplemented by John D. Cowan, Cowan Quality Buildings, 74 Willowbank Blvd, Toronto, ON Canada M5N 1G6. 1 Quantitative Evaluation, second paragraph. Background: Table 2 footnote states: "Table 2 prescribes supply rates of acceptable outdoor air required for acceptable indoor air quality. These values have been chosen to control CO2 and other contaminants with an adequate margin of safety and to account for health variations among people, varied activity levels, and a moderate amount of smoking.
Advisory (should, or recommended), unless stated as mandatory (shall). : December 13, 1993 Request from: This reissued interpretation incorporates changes to the caveat accompanying the answer to Question 1 and deletes the comment. It also incorporates editorial changes for clarification of the Background Section, the headings, and Comment (b) to Answer 3. This revised interpretation is intended to resolve comments received as a result of publication of the original interpretation in the October 1991 issue of the ASHRAE Journal.
Answer. Yes Comment. 1 difficult to resolve and will consider proposals for clarifying/modifying the requirements in the next revision of Standard 62. Case 3. 4. 3-A (Creighton & Associates interpretation) The system designer may, at his or her option, lead or lag the ventilation supply to the space. This is not a mandatory requirement. 3-B (Alternative interpretation) Lead/Lag ventilation is a mandatory part of the standard and shall be used in the design of ventilating systems for all occupied spaces of intermittent or variable occupancies.
ASHRAE Standard 62-1999, Ventilation For Acceptable Indoor Air Quality