NHI Bridge Inspection Course 130055 Practice Test

Which defect is described as a surface check at the grain?

Surface check Shake Split Warp

Correct Answer:

Surface check

Explanation:

The concept being tested is recognizing how defects relate to grain and surface in wood. A surface check is a small crack that forms on the surface and runs along the grain, usually caused by drying or seasoning stresses. It stays at the surface and is typically shallow, which is why it’s described as a surface check at the grain. The other defects describe different problems: shake is a separation along the grain that can run through the piece, split is a through-thickness crack along the grain, and warp is a distortion of shape from uneven drying. So the surface crack along the grain best fits the description.

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