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Daily Quiz (22)


True or false: Relative humidity sensors used to determine moisture content of concrete slabs can produce fairly accurate results within an hour after probes are inserted into a slab, according to a manufacturer of the test equipment.


When assessing the moisture content of wood with a suitable moisture meter, what level of moisture is generally considered to be the upper limit for successful painting?


How can a hygro thermometer be useful in coating work?


What is another name for wet storage stain?


True or False: The plastic sheet method is a quantitative test for determining the extent of moisture in a concrete slab.


True or False: Relative humidity at the surface of bridge steel may be different from the relative humidity in the atmosphere away from the steel surface.


What does the anhydrous calcium chloride test measure?


True or False? Many coating manufacturers recommend a maximum relative humidity of 40% within a concrete slab before their flooring products are applied.


True or False? Before electronic instruments became available to measure dew point and relative humidity directly, surface temperature thermometers were used to derive these readings.


When assessing the moisture content of wood with a suitable moisture meter, what level of moisture is generally considered the upper limit for successful painting?


True or False: Air leakage into a building can generate much more moisture than moisture vapor transmission can.


True or false: To hold the blast (prevent re-rusting of blasted steel) inside a tank, one effective measure is to use dehumidification to keep relative humidity below 50%.


True or false: There are no quantitative methods for determining levels of moisture in concrete floor slabs.


True or false: The anhydrous calcium chloride test for measuring moisture in concrete slabs is a qualitative rather than a quantitative test.


True or false: The density of concrete prevents water vapor and gases from moving freely within the matrix.


Instruments used to test moisture in concrete or masonry walls are based on what principle?


True or false: The most accurate meters for detecting moisture within a concrete substrate are based on readings of temperature and humidity.


Why would a test for moisture content of concrete be important prior to application of thick-film elastomeric coatings?


Dried salt deposits on a brick exterior (see photo), resulting from moisture leakage through a wall, are called what?


When assessing the moisture content of wood with a suitable moisture meter, what level of moisture is generally considered the upper limit for successful painting?


True or false: Both relative humidity and temperature differentials from one side to the other can drive moisture vapor through a block wall.


True or false: A moisture content of 30%, as measured by a moisture meter, is generally considered the upper limit for successful painting of wood.


 
 
   

NACE International, The Corrosion Society
Advance Your Coating Inspector Career

By completing the world’s most recognized program, NACE’s CIP, you’ll be better trained and qualified on inspection of surface preparation and coatings application.


Novetas Solutions
Abrasive Blasting near or over water?

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Montipower, Inc.
The MBX Bristle Blaster

Get a 2.7 to 3.3 mil profile and a Near White Metal Clean. For info visit www.mbxit.com or call 877 629-8777


DRYCO
Humidity & Temperature Control Equipment

Rental Desiccant Dehumidifiers, ArcticDRY Units, Air Conditioners, Heaters and Generators to help control the climate on your next industrial painting project. Nationwide locations, 24/7 service: (866) 379-2600 www.drycogroup.com”


N.T. Ruddock Co.

Our Abrasives Hold Up Under Pressure

N. T. Ruddock focuses on abrasive selection, equipment evaluation, equipment maintenance & reduction of abrasive consumption. Other services include Screen Analysis & Background Radiation Testing.


Nationwide Overspray
Profession Overspray Removal Services

The Finest Name in Safe Overspray Removal. We specialize in removing all contaminants from any surface. Family Owned and Operated for 33 years! Fully insured. Satisfaction is guaranteed.


SAFE Systems, Inc.
SAFE Systems'
Blast Lights &
Deadman Switches

Halogen or LED blast lights available with our NEW urethane bumper. Switches available in many colors for color coding your hoses.


RBW Enterprises, Inc.
Robotic Blast Cleaning & Painting News

RBW Enterprises has the only portable blast cleaning machine that can clean both horizontal and vertical surfaces, and pipe See more Videos at www.rbwe.com


Fischer Technology Inc.
DUALSCOPE®FMP100 with DataCenter IP

Transfer customized inspection plans from PC to FMP100 using step-by-step guidance with prompts and pictures throughout the measurement procedure


Novatek Corporation
Novatek Corporation, Dustless Coatings Removal

Strip, clean and profile all dust free! Comply with new lead standards. Contact today: (866) 563-7800

 
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