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Topic: Moisture

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The use of sheet moisture barriers, although common practice in wood construction, runs counter to successful historical building practice and generally accepted current practice, is unsupported by either empirical or test data, and is not required by straw-bale building codes.
Moisture can enter and exist in walls in two forms: liquid water, such as might come from a leaky window; and water vapor, which is water suspended in air.
Moisture within a stud wall is commonly led along a few passageways within the wall: air channels, eddies and backwaters within cavities direct vapor laden air; and solid wood elements working with gravity concentrate the movement of water into certain limited areas within the wall.
www.skillful-means.com /strawbale/papers/moist5.htm   (1877 words)

 Moisture Control | IAQ Design Tools for Schools | Indoor Air | U.S. EPA
Uncontrolled moisture can trigger mold growth which not only damages the school facility, but can lead to health and performance problems for students and staff.
Moisture migration in buildings is highly complex and depends on a variety of factors, including the climactic conditions where the school is being built.
Moisture migrates from the warm and humid side of the construction assembly to the cold dry side of the construction assembly.
www.epa.gov /iaq/schooldesign/moisturecontrol.html   (2066 words)

 Controlling Moisture | Remodeling Your Home? | IAQ in Homes | Indoor Air | Air | US EPA
Excess moisture can be in the form of high relative humidity including humidity generated by people and their activities such as showers, cooking, or drying clothes.
It is also important that the roof and attic design addresses the issue of moisture in the form of water vapor to avoid condensation in building cavities.
The important considerations are preventing movement of moisture from the warm side to the cold side of the building envelope, and managing moisture which does pass through the envelope to prevent condensation on building materials.
www.epa.gov /iaq/homes/hip-moisture.html   (1095 words)

 Holding the Line: Controlling Unwanted Moisture in Historic Buildings - Oldhouseweb.com
Finding, treating, and managing the sources of damaging moisture requires a systematic approach that takes time, patience, and a thorough examination of all aspects of the problem-including a series of variable conditions.Moisture problems may be a direct result of one of these factors or may be attributable to a combination of interdependent variables.
Moisture is notorious for traveling far from the source, and moisture movement within concealed areas of the building construction make accurate diagnosis of the source and path difficult.
Moisture should not be sealed into the wall with a waterproof coating, such as cement parging or vinyl wall coverings, applied to the inside of damp walls.
www.oldhouseweb.com /stories/Detailed/225.shtml   (8750 words)

 Moisture - Wikipedia, the free encyclopedia
Moisture generally refers to the presence of water, often in trace amounts.
The moisture content is often an important aspect of various foodstuffs including cheese and many dried goods such as tea where excess moisture can promote bacterial growth, decay, molding, or rotting over time.
Excessive moisture can also cause rot in wood or other organic material, corrosion in metals, and electrical short circuits.
en.wikipedia.org /wiki/Moisture   (117 words)

 Weather Tutorial Page 4 - Moisture   (Site not responding. Last check: 2007-10-12)
Relative humidity relates the actual amount of moisture in the air (in the form of a percent) to what total amount of moisture could be held in the air (That means it is also a ratio!).
Precipitation refers to all different kinds of moisture that falls from the sky: drizzle, rain, snow, ice pellets, hail and ice crystals (whether they contact the ground or not).
Icing occurs when an aircraft flies through visible water and the temperature at the point where the moisture strikes the aircraft is 32° F (0° C) or colder.
virtualskies.arc.nasa.gov /weather/tutorial/tutorial4.html   (1584 words)

 Moisture Resistance (via CobWeb/3.1 planetlab2.isi.jhu.edu)   (Site not responding. Last check: 2007-10-12)
Effectively controlling moisture requires careful planning at all stages of the building process, from architectural design and materials selection through the construction process to a lifelong practice of consistent, thorough maintenance.
While it is important to control moisture exposure within the building, there are certain areas where it is clearly essential to use water-durable products, such as tub and shower areas, swimming pools, and kitchen counters.
When moisture is introduced, such as through wet cement and painting, maintain ample ventilation and use special drying equipment where needed.
www.usg.com.cob-web.org:8888 /navigate.do?resource=/USG_Marketing_Content/usg.com/web_files/resources/architects/MoistureResistance-Page.htm   (346 words)

Moisture has grown, from being a project concerned with understanding water’s elusive path in a desert environment, into a project directly engaged with a specific region within the Mojave Desert.
Moisture is what it is. We are building things in the Mojave that 'hopefully' will interact with the hydrological cycle.
Moisture is a minuscule contribution made by a few artists aware of that issue.
moisture.greenmuseum.org /blog/2003_09_01_moistureblogg_archive.html   (8476 words)

 Moisture Control and Prevention Guide
Moisture causes more than $1 billion in damage to homes annually, from minor damage like peeling paint to major damage, such as rotting, crumbing floor joists.
Wood with a moisture content of 20 percent and above is susceptible to decay.
A moisture meter reading of 20 to 24 percent is in the caution zone.
www.ces.ncsu.edu /depts/fcs/housing/pubs/fcs486.html   (1701 words)

 Moisture&IAQ Solutions (via CobWeb/3.1 planetlab2.isi.jhu.edu)   (Site not responding. Last check: 2007-10-12)
Mold and moisture causes billions of dollars of reported damage to building envelopes each year.
If all these additional influences are included in the estimate of actual damage, several tens of billions of dollars in losses may be attributed to mold and moisture related damage in buildings every year.
Effective moisture control in the building envelope is essential if acceptable service life is to be achieved for the built environment.
www.moistureiaq.com.cob-web.org:8888   (240 words)

If the air temperature falls any lower, some of the moisture that is in the air changes from vapor to either liquid or solid.
This gets rid of the moisture and saves energy that would be needed to heat the incoming outside air.
We must control the moisture in the inside of our homes by using vapor barriers to prevent insulation and other home damage.
www.chibardun.net /~ses1997/moisture.htm   (1016 words)

 Mold Resources | Mold | Indoor Air | U.S. EPA
Other sources of excess moisture besides overuse of a humidifier may be long showers, running water for other uses, boiling or steaming in cooking, plants, and drying clothes indoors.
Moisture problems in school buildings can be caused by a variety of conditions, including roof and plumbing leaks, condensation, and excess humidity.
Moisture problems in schools are also associated with delayed maintenance or insufficient maintenance, due to budget and other constraints.
www.epa.gov /iaq/molds/moldresources.html   (4615 words)

 ►Moisture & Waters effect on Wood Floors-Buckled Wood Floors-Flooded Wood Floors (via CobWeb/3.1 ...   (Site not responding. Last check: 2007-10-12)
Moisture problems within a house that show up as condensation and/or frost on windows in the living area, can result from dampness in the crawl space, or from inadequately vented living space.
Moisture problems in crawl spaces may be due to the construction of a crawl space in an area of high water table, improper grading of the lot for drainage or the omission of moisture control devices such as vapor barriers, ground cover and ventilation openings.
As moisture is released in a house, it moves to all rooms by natural air movement or by forced air movement from furnace or air conditioning.
www.woodfloorsonline.com.cob-web.org:8888 /techtalk/woodwater2.html   (2509 words)

 Sound Home Resource Center-Topic
By addressing these basic and often preventable causes of basement and crawl space moisture, it is possible to create basements which are 95% dry 95% of the time.
In some climates such vents may add moisture to crawl spaces by allowing entry of warm and moist exterior air into the crawl space and increasing moisture through condensation.
These high moisture levels damage wood (wood rot and insect damage) and other building materials.
www.soundhome.com /topics/topic_basement.shtml   (2088 words)

 memerase Moisture, Permeability and Mold
However, if deficiencies in the design, construction or maintenance of a building, or other circumstances, allow liquid or vapor moisture to accumulate in a wall or wall cavity, vinyl wallcovering can act as a vapor barrier restricting the escape of moisture and increasing the risk of mold growth and other building damage from trapped moisture.
In all cases, moisture and sources of moisture accumulation must be corrected before installing any wallcovering.
Building maintenance must include those actions necessary to prevent the development of moisture accumulation sources as well as routine inspections for and immediate corrective action if moisture accumulation is found in a wall or wall cavity.
www.omnova.com /memerase/permeability.aspx   (580 words)

 Welcome to Moisture Detection
To test virtually any polymer for moisture, 80 grams of pellets are placed in a sample tube and inserted into the 360°F heater assembly.
The absorber is subjected to a microwave beam with the amount of moisture affecting the output of the microwave energy applied to the solid state electronics.
Splay and other defects in plastic products, caused by moisture in the hygroscopic plastic resins, has been the major cause of scrap in the polymer industry since its inception.
www.moisturedetection.com   (337 words)

 Moisture Sensor
Soil moisture is 72% at a depth of 12 inches.
The AP Moisture Probe will provide an accurate moisture profile, shown digitally in percent soil moisture, (100% is saturated and 0% is dry) over the entire root zone.
Soil moisture levels can be seen on our hand held digital meter or use our data logging system to automatically save and download data to your PC.
www.aquapro-sensors.com   (784 words)

Determining moisture in: powders used in some manufacturing process; the food industry for ingredients like flour, powdered milk, corn meal; ingredients for ice cream; the wastewater industry for percent solids in primary and secondary sludge then the MA35 moisture balance is a great choice.
The MA45 moisture analyzer uses a ceramic heating element and one could consider the heating source similar to the sun where it is hottest in the center and cooler as you move outward from the center.
AMB moisture balances provide a rapid and accurate method for moisture content and dry weight analysis of a wide range of products and materials.
www.moisture-balances.com /moist.html   (1779 words)

 Healthy Indoor Air
Moisture and biologicals (like molds, mildew, and dust mites).
Humidifiers, dehumidifiers and air conditioning condensing units should be regularly cleaned with a disinfectant such as chlorine bleach.
People who are sensitive to dust mites may need to replace carpeting in their homes with hard surfaced flooring and use area rugs that can be removed and cleaned.
www.montana.edu /wwwcxair/facts_mold.html   (590 words)

 NIR Moisture Sensors, Moisture Gauges, Moisture Analyzers ...
Process Sensors Corporation (PSC) is a leading manufacturer of state-of-the-art moisture gauges and sensors, providing the most accurate and reliable moisture measurement available for quality control in manufacturing processes, for industries worldwide.
PSC's MCT Series moisture analyzers and transmitters, employ true Smart Sensor Technology (SST®), next generation optics and stable electronics, to meet the increasingly stringent quality controls required by today's manufacturing industries, and to provide innovative process control solutions for maximum on-line manufacturing productivity, cost efficiency and profitability.
Convert-a-gauge: The Convert-A-Gauge® is Process Sensors' Conversion Service for aging NIR gauges which gives a new life to obsolete or out of date instruments.
www.processsensors.com   (212 words)

 Moisture Analyzer. TDLAS Technology Moisture Analyzer Sensor - Delta F (via CobWeb/3.1 planetlab2.isi.jhu.edu)   (Site not responding. Last check: 2007-10-12)
TDLAS has advantages over other techniques because the moisture sample only comes in contact with a few optical components that are made from very robust materials.
Our TDLAS moisture analyzers are designed and built to provide years of trouble-free, reliable operation.
Click Moisture Sensing Technology and Products for more information on the technology or click Moisture Applications and Articles to see how this TDLAS moisture technology can help your process.
www.delta-f.com.cob-web.org:8888 /moisture.html   (264 words)

 Moisture Control   (Site not responding. Last check: 2007-10-12)
You need to bone up on the fundamentals of heat, air and moisture transport in buildings.
Dr. Karagiozix is a national and international expert in the area of thermal and moisture performance of building envelopes and materials.
He is active in the building industry, participating in ASHRAE, ASTM, USA National representative for CIB W40 and the Building Environment and Thermal Envelope Council.
www.clemson.edu /scies/MoistureControlWorkshop.htm   (652 words)

 Star Wars: Databank | Lars moisture farm
Located near the sleepy farming community of Anchorhead and within reasonable traveling distance to bustling Mos Eisley, the Lars homestead was indicative of the typical moisture farm found on Tatooine.
Dotting the property were a number of moisture vaporators, devices designed to pull water vapor from the parched air.
The resulting water was either stored in reservoirs for later resale, or directed underground to irrigate sheltered crops.
www.starwars.com /databank/location/larsmoisturefarm/index.html   (227 words)

 Climate Prediction Center - Monitoring & Data: United States Soil Moisture Monitoring
Soil Moisture - A series of maps showing most recent day, monthly and 12 months calculated soil moisture, anomalies and percentiles; and a soil moisture and soil wetness climatology plus a
changes in calculated soil moisture anomalies (millimeters) animated loop from January 1998 to the present.
Download data - to down load the historical monthly soil moisture data and the daily soil moisture data of this year.
www.cpc.ncep.noaa.gov /soilmst   (312 words)

 EG&G Berthold Moisture Measurement
The Berthold Moisture Analyzer is able to make moisture measurements that have not been able to be made by other technologies.
This results in a very accurate moisture measurement that is negligibly affected by temperature, particle size or volatile matter.
Determination of the moisture of coke and sinter mixtures
www.berthold-us.com /moisture.htm   (312 words)

The purpose of this website is to educate homeowners and others on home moisture and related topics.
Home Moisture - General information about moisture in the home, causes, effects, and possible solutions to these types of problems.
Presentations - Presentations on home moisture, mold and keeping your home healthy in several formats to view and download including PowerPoint.
www.homemoisture.org   (219 words)

 Extech Instruments: Moisture Meters: (via CobWeb/3.1 planetlab2.isi.jhu.edu)   (Site not responding. Last check: 2007-10-12)
Non-Invasive moisture content of building materials and wood
Monitor moisture in wood and other building materials
Fast, accurate, wood moisture measurements with built-in self-calibration
www.extech.com.cob-web.org:8888 /instrument/categories/moisture/moisture.html   (85 words)

 Honeywell Industrial Measurement and Control   (Site not responding. Last check: 2007-10-12)
Honeywell’s moisture measurement product line provides accurate, dependable, on-line measurement without intensive maintenance.
Honeywell’s instruments are rugged enough to take the heat, pressure and contaminants typical of industrial applications.
For more information on these products, you can view product details, search by specification, or compare models using our Interactive Catalog.
content.honeywell.com /imc/ai/moisture   (73 words)

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