4FOUR

What is one of the oldest building materials known to the construction industry?

• Concrete

• Steel

• Wood

• Brick

Which part of a tree is responsible for storing and transporting nutrients?

• Heartwood

• Bark

• Cambium layer

• Sapwood

Which type of lumber has a broader grain pattern on the wide face and greater distortion during drying?

• Softwood Lumber

• Plainsawn Lumber

• Riftsawn Lumber

• Quartersawn Lumber

What is the main strategy for protecting wood from biological attack?

• Make the wood an unsuitable food source

• Expose the wood to oxygen

• Increase the temperature around the wood

• Keep the wood wet

Which type of lumber defect is a separation of wood fibers perpendicular to the growth rings?

• Knots

• Checks

• Wane

• Shakes

What is the main purpose of pressure treating lumber with a preservative?

• To increase combustibility

• To reduce decay resistance

• To increase strength

• To reduce combustibility

Which manufactured wood product consists of beams made from glued, solid lumber pieces?

• Cross-Laminated Timber

• Nail-Laminated Timber

• Glue-Laminated Lumber

• I-Joists

What is the main advantage of prefabricated trusses in construction?

• They can be rapidly erected on the jobsite

• They are heavy and difficult to transport

• They have limited span capability

• They require extensive on-site assembly

What is the main purpose of fire-retardant treated wood?

• To increase strength

• To reduce decay resistance

• To increase combustibility

• To reduce combustibility

Which type of wood panel is made of laminated softwood veneers with an odd number of plies?

• Plywood

• Fiberboard

• Oriented Strand Board (OSB)

• Particleboard