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2. Water damage - Wikipedia

   en.wikipedia.org/wiki/Water_damage

   Affects only a portion of a room. Materials have a low permeance/porosity. Minimum moisture is absorbed by the materials. **IICRC s500 2016 update adds that class 1 be indicated when <5% of the total square footage of a room (ceiling+walls+floor) are affected ** Class 2 - Fast Rate of Evaporation. Water affects the entire room of carpet and ...

3. Water stagnation - Wikipedia

   en.wikipedia.org/wiki/Water_stagnation

   Water stagnation for as little as six days can completely change bacterial community composition and increase cell count. [3] Stagnant water may be classified into the following basic, although overlapping, types: Water body stagnation (stagnation in swamp, lake, lagoon, river, etc.) Surface and ground water stagnation; Trapped water stagnation.

4. Damp (structural) - Wikipedia

   en.wikipedia.org/wiki/Damp_(structural)

   The dampness results in vaporization where water vapor is transmitted into the building's interiors. Water vapor may enter the building through supply air ducts in building slabs and circulated by warm forced air. Water vapor can also enter a building through leaky return air ducts in homes with crawlspaces. [4]: 185–187

5. Floor slip resistance testing - Wikipedia

   en.wikipedia.org/wiki/Floor_slip_resistance_testing

   Pendulum floor slip resistance tester. The ASTM E303-22 [1] (United States), BS EN 16165:2021, [2] BS EN 13036-4:2011 [3] (United Kingdom and many other European nations), AS 4663:2013 - Slip resistance of existing pedestrian surfaces, and AS 4586:2013 - Slip resistance classification of new pedestrian surface materials (Australia/New Zealand) slip resistance test standards define the pendulum ...

6. Truckmount carpet cleaner - Wikipedia

   en.wikipedia.org/wiki/Truckmount_carpet_cleaner

   A truckmount carpet cleaner is a carpet and upholstery cleaning unit that is generally mounted to the floor of a van or trailer. [1] Its cleaning method is hot water extraction . The operator would park the van near the premises, connect the vacuum hose and solution line hose into the machine, bring the hoses into the building, and connect a ...

7. Concrete degradation - Wikipedia

   en.wikipedia.org/wiki/Concrete_degradation

   3) and water to also form gypsum while releasing CO 2 back to the atmosphere: H 2 SO 4 + CaCO 3 + H 2 O → CaSO 4 · 2H 2 O + CO 2. The dihydrated gypsum is relatively soluble in water (~ 1 – 2 g/L) at room temperature and thus mobile. It can easily be leached by infiltration water and can form efflorescences on the concrete surface while ...