Hardwood Floors August/September 2017

CHECK YOUR KNOWLEDGE RESOURCES

1. What is the penetration limit for dielectric moisture meters? A. Up to 1” for both hardwood and softwood

B. 1” for hardwood and 2” for softwood C. 2” for hardwood and 1” for softwood D. Up to 2” for both hardwood and softwood

2.What is the advantage of a probe-type meter with insulated pins? A. Easier to read B. Measures the entire depth of the pins C. Leaves smaller holes D. Measures at varying depths

3.What is the average moisture content of most hardwood flooring?

A. 4-7% B. 6-9% C. 4-12% D. 25-30%

4.The following is true of pin-type meters: A. Temperature of the wood affects the MC readings B. Pins should be placed parallel with grain direction of flooring C. Typically calibrated to Douglas fir D. All of the above 5.Which statement is most accurate? A. Free water is held by a chemical, or hydrogen bond within the cells of the wood B. Once all of the free water is gone from the cell lumina, only bound water remains C. When only free water remains, the cells have reached the fiber saturation point D. Below fiber saturation point, all moisture gained or lost is free water

HOW DID YOU DO? See suggested NWFA University learning path on the next page. Answer key is on page 85.

the magazine of the national wood flooring association

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