Construction materials include _____________________ - ANSWERSmortar, concrete, and masonry
units, composition panels, engineered lumber, sawed lumber, steel, aluminum, vapor barriers, and
gypsum boards
True or false, Dimension lumber is used primarily for posts, beams, and heavy stringers. - ANSWERSfalse,
used for sills, plates, studs, joists, rafters, and other framing
The natural cement that holds wood cells together is called ___________ - ANSWERSlignin
Which of the following kinds of wood are classified as hardwoods? - ANSWERSwillow
When a softwood log is cut so the annular rings form an angle greater than 45 degrees with the surface
of the boards, the lumber is called _______________ - ANSWERSflat grained
when green lumber is used.... - ANSWERSwarping, plaster cracks, nail pops, squeaky floors, and other
difficulties are almost impossible to prevent
The fiber saturation point is about ______________ M.C. for nearly all kinds of wood. - ANSWERS30%
The letters E.M.C. are an abbreviation for the term ___________ moisture content. -
ANSWERSequilibrium moisture content
The best grade of selects softwood lumber is _______________ - ANSWERS
The best available grade of hardwood lumber is ____________ - ANSWERS
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