TREE UTILIZATION AND PRODUCTS
WOOD PROPERTIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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workability
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elasticity
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swelling
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NONE of the Above
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Detailed explanation-1: -The velocity of sound in timber (hardwood) is approximately 12 times more than that in the air. A good timber should produce a clear ringing sound when struck by each other. A dull heavy sound designates decayed timber.
Detailed explanation-2: -Bending strength (also known as the modulus of rupture) shows the load the wood can withstand perpendicular to the grain. How much weight can you hang on a peg? The stiffness or modulus of elasticity indicates how much the wood will deflect when a load is applied perpendicular to the grain.
Detailed explanation-3: -The tensile strength of soft-woods parallel to grain at 12% moisture content generally ranges between 70 to 140MPa. The compression strength is lower and is usually in the range 30 to 60 MPa. For hard-woods, these values are generally higher. These values are for clear, straight-grained wood samples.