27102 Building Materials PPT # 8

In the cross section of a tree, one year of tree growth is represented by one ______.

• cambium layer

• medullary ray

• annular ring

• lignin

In the cross section of a tree, one year of tree growth is represented by one _______.

Which of the following defects do not occur naturally in wood?

• Shakes

• Pitch streaks

• Knots

• Torn grain

Which of the following defects do not occur naturally in wood?

The process through which concrete hardens by the reaction between water and cement is known as _______.

• hydration

• calculation

• regeneration

• formation

The panel product that will not support combustion and will not burn is ____.

• plywood

• particleboard

• OSB

• mineral fiberboard

The panel product that will not support combustion and will not burn is ____.

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The type of plywood with a hard, resin-impregnated fiber overlay heat-bonded to both surfaces is ________.

• hardwood plywood

• medium-density overlay plywood

• high-density overlay plywood

• hardboard

A potential for harm, often associated with a condition or activity that, if left uncontrolled, could result in an injury or illness, is referred to as a(n) _______.

• experience modification rate

• hazard

• accident

• job hazard analysis

A potential for harm, often associated with a condition or activity that, if left uncontrolled, could result in an injury or illness, is referred to as a(n) _______.