Air pressure and buildings
Air tightness refers to the continuity of a buildings fabric and its ability to retain air (and heat), it is measured in terms of an air leakage rate through the building's envelope. Air pressure might be described as the force exerted by air on any surface in contact, in a unconfined, confined or compressed space. Air tightness is measured with reference to a certain air pressure, normally given as 50 pascals, in a building this is approximately the pressure exerted on a fabric if a 20 mile an hour wind is blowing on all of its side sides at the same time.
at a given reference pressure (usually 50 pascal) divided by the: Heated building volume V. At 50·Pa, it is called the air change rate at 50 Pa and usually noted n50(units: h−1).
, air pressure and air flow in buildings are all related but also. .. of air or any other fluid is caused by a pressure differential between two points.
Flow will originate from an area of high energy, or pressure, and proceed to area(s) of lower energy or pressure.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Connect, collaborate, shape the future
Registration now live for UK Construction Week Birmingham.
CIOB announces Saul Humphrey FCIOB as new President for 26/27 term.
A quick, simple, and zero-bills solution to prevent overheating.
The adaptive reuse of large industrial structures.
Promoting the circular economy by extending the life of buildings.
CIAT responds to Climate Change Committee report
An urgent wake-up call for both government and the built environment.
Construction Management, 24 June
FMB pilot aims to build pipeline of site-ready tradespeople.
A quick introduction.
CLC publishes Mental Health Joint Code of Practice.
A quick introduction to its uses and risks.
Construction Management, 17 June
Government rolls out digital planning tool to all local authorities.
Your views needed - a strategy for the professions, trades and occupations.
Confronting competency, codes, capacity and costs.