Drying diffusivity
Drying diffusivity (Dww) This is defined in WUFI as the liquid transport coefficient for redistribution, measured in units of square metre per second (m2/s) describes the spreading of the imbibed water when the wetting is finished, no new water is taken up anymore and the water present in the material begins to redistribute. In a building component, this corresponds to the moisture migration in the absence of rain. The redistribution is dominated by the smaller capillaries since their higher capillary tension draws the water out of the larger capillaries.’
[edit] Related articles on Designing Buildings
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Code of Practice for Electrical Energy Storage Systems.
ECA calls on members to comment on draft 4th edition.
Bringing together expertise and creating cultural benefits.
CIOB celebrates positive Ofsted report.
The Building Safety Regulator announces a call for evidence.
Government approach could undermine delivery and regeneration.
World's first mass timber data centre.
The overlooked environmental aspect of data centre development.
Introduction to radon awareness
New technical information sheet published by CIOB.
Updated supplier guide can help electrical contractors engage with NHP.
CIAT confirm the winners of the 2026 architectural technology awards.
Government launches a one stop shop for flood preparedness.
Sir Edwin Lutyens: Britain's greatest architect? Book review.
CIOB publishes free template to help assess and manage risks.