moisture
Let an agent explain moisture and its forms, relay measurement and effects from meteorological, geotechnical and materials sources, describe damp in buildings and moisture in materials, and distinguish moisture from humidity as a ratio, from wetness and from water content in bulk.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain moisture and its forms, relay measurement and effects from meteorological, geotechnical and materials sources, describe damp in buildings and moisture in materials, and distinguish moisture from humidity as a ratio, from wetness and from water content in bulk.
The presence of water, usually as vapour or small amounts of liquid, in air, soil, rock, sand, materials or products, described as damp when unwanted in buildings, as atmospheric moisture in meteorology, as soil, sand and rock moisture in geoscience and construction, and as inherent moisture in coal and other materials; moisture content is measured by drying, electrical and spectroscopic methods and governs comfort, corrosion, mould, material behaviour and food stability.
What it is for: Not applicable; a physical condition.
It can be explain forms; relay measurement and effects; describe damp and materials moisture; distinguish related terms.
Distinguishing features
Water presence
Many media
Measured content
Wide effects
What it looks like
Not a visible object; dampness, condensation or vapour.
Physical character
comfortable indoor relative humidity: about 40-60 percent
mould growth threshold: above about 70-80 percent RH - on surfaces
measurement methods: oven drying, capacitance, NIR, Karl Fischer list
How it is recognised
Presence of water in air, soil or materials
Atmospheric moisture, soil, sand and rock moisture, inherent moisture, damp
Humidity is the vapour ratio in air; wetness is surface liquid; water content is the bulk fraction
Related models
is a kind of - in registry terms
is measured as - by drying and sensors
is related to - in air
causes - growth in buildings
In practice
Families and kinds
atmospheric moisture and humidity
soil moisture
sand and aggregate moisture in construction
rock moisture
inherent moisture in coal and materials
damp in buildings including rising, penetrating and condensation damp
moisture in foods and products
Standards and regulation
Building regulations on damp and ventilation
Standards for moisture measurement such as ISO 712 for cereals and ASTM D2216 for soils
Food moisture and water activity standards
Failure modes and hazards
Mould and health effects of damp
Corrosion and material degradation
Confusing moisture with humidity
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.moisture
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Understand What moisture is.
Science.
Definition
Definition.
Definition
Definition.
- What is moisture, and how does it differ from humidity, wetness and water content? definition
- Is the question about moisture in air, soil, buildings, materials or food? boundary
Forms
Forms.
Forms
Forms.
- What are atmospheric, soil, sand, rock and inherent moisture and building damp? definition
- Which entry fits the specific form? action
Measure Measurement.
Practice.
Methods
Methods.
Methods
Methods.
- How is moisture measured by drying, electrical sensors, spectroscopy and Karl Fischer titration? provenance
- Which references are standard? provenance
Standards
Standards.
Standards
Standards.
- What standards define moisture content for soils, cereals, timber and coal? provenance
- Which sources are cited? provenance
Effects Effects and control.
Application.
Buildings
Buildings.
Buildings
Buildings.
- What causes damp in buildings, and how is it diagnosed and remedied? provenance
- Which entry fits damp (structural)? action
Materials
Materials and food.
Materials
Materials.
- How does moisture affect timber, concrete, coal, electronics and food stability? provenance
- Which entry fits water activity? action
Context Environment and health.
Context.
Environment
Environment.
Environment
Environment.
- How do soil and atmospheric moisture drive weather, agriculture and drought? provenance
- Which entry fits soil moisture? action
Health
Health.
Health
Health.
- What health effects do damp and mould have, as public health bodies report? provenance
- Which entry fits indoor mould? action
What the second pass must settle
- Should soil moisture and damp be separate primary entries?
- How should measurement standards be linked?
- The registry entry has merged aliases from meteorology, geoscience and materials; should they be split off?