Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/28013
Title: Air pressure fluctuations of drainage stacks at a high-rise office building
Authors: Liao, WJ
Mui, KW 
Cheng, CL
Wong, LT 
He, KC
Keywords: Air pressure fluctuations
Buildings
Experiments
Field measurements
High-rise drainage stack
Issue Date: 2011
Publisher: SAGE Publications
Source: Indoor and built environment, 2011, v. 20, no. 4, p. 412-419 How to cite?
Journal: Indoor and built environment 
Abstract: This study examines air pressure variations along a discharging stack with unsteady discharging flow rates, including the fluctuation frequency, the maximum and average pressures with their respective standard deviations at a drainage stack of an in-use office building. With a modified constant, the maximum air pressure at the drainage stack could be described by the probability density function of the measured data using earlier proposed mathematical expressions for steady discharging flow rates. The average prediction and the maximum under-prediction of the absolute peak pressure were determined with the margin of errors taken within certain confidence levels. The results would be useful for understanding the air pressure in drainage stacks and help increase the potential of installing a real-time monitoring system in a high-rise drainage stack.
URI: http://hdl.handle.net/10397/28013
ISSN: 1420-326X
EISSN: 1423-0070
DOI: 10.1177/1420326X11409602
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