ARCHITECTURAL AND ENGINEERING DESIGN REQUIREMENT
LEGEND and NOTES
the DTR, routine being defined as exceeding 5 hours per week, the
following criteria shall apply:
- DTR room air changes shall be not less than 12 total AC/H.
- The room shall be totally exhausted.
- Provide a minimum of one low-level exhaust register, sized to
remove a minimum of 20% of the total room exhaust volume.
- During period of non-use, air change rate may be reduced to 3 total