Designing Buildings: Created page with "Approved Document F Volume 1, 2021 edition, defines surface water activity as: ‘A measure of the availability of water to micro-organisms. Surface water activity is determined ..."

2023-03-15T10:16:49Z

Created page with "Approved Document F Volume 1, 2021 edition, defines surface water activity as: ‘A measure of the availability of water to micro-organisms. Surface water activity is determined ..."

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Approved Document F Volume 1, 2021 edition, defines surface water activity as: ‘A measure of the availability of water to micro-organisms. Surface water activity is determined from the ratio of the vapour pressure of the water in the substrate to the vapour pressure of pure water at the same temperature and pressure. This ratio, in steady-state conditions, is numerically equal to the equilibrium relative humidity of the air, except that the latter is commonly expressed as a percentage.’

See also: Surface water.

= Related articles on Designing Buildings =

* Approved document F.
* Approved documents.
* Building Regulations.
* Heat recovery.
* Humidity.
* Indoor air quality.
* Mechanical ventilation.
* Natural ventilation.
* Surface water.
* Ventilation.

[[Category:DCN_Definition]] [[Category:Definitions]] [[Category:Water]] [[Category:Standards_/_measurements]]

Surface water activity - Revision history

Designing Buildings: Created page with "Approved Document F Volume 1, 2021 edition, defines surface water activity as: ‘A measure of the availability of water to micro-organisms. Surface water activity is determined ..."