RI 3343 Ventilation Of Manholes - 2. Effect Of The Size Of The Manhole On Natural Ventilation ? Introduction
- Organization:
- The National Institute for Occupational Safety and Health (NIOSH)
- Pages:
- 12
- File Size:
- 4448 KB
- Publication Date:
- Jan 1, 1937
Abstract
In a previous report,6 results were given that showed the amount of natural ventilation in a manhole having a capacity of 74.l cubic feet when the number of ventilation openings in the cover was varied. from no openings to a maximum of 48. The results showed that the ventilation (air changes per day) in the manhole was proportional to the area of the openings in the cover, and also that the number or area of the openings was the factor that chiefly affected the ventilation.
Citation
APA: (1937) RI 3343 Ventilation Of Manholes - 2. Effect Of The Size Of The Manhole On Natural Ventilation ? Introduction
MLA: RI 3343 Ventilation Of Manholes - 2. Effect Of The Size Of The Manhole On Natural Ventilation ? Introduction. The National Institute for Occupational Safety and Health (NIOSH), 1937.