Carpentry: ELP - from the book

Engineered lumber is produced today because of

• The decreasing supply of old-growth trees

• a need for stronger, more stable building material

• a need to make efficient use of natural resources

• all of the above

Unlike plywood, the veneers of LVL are:

• deciduous

• densified

• diversified

• double-faced

Laminated veneer lumber is often used for:

• high-strength load-carrying beams

• posts and columns

• low-strength rim joists

• floor joists

Parallel strand lumber is made from:

• Alaskan cedar and California redwood

• Douglas fir and southern pine

• Idaho pine and eastern hemlock

• Englemann spruce and western pine

Parallel strand lumber is often used for:

• high-strength load-carrying beams

• posts and columns

• low-strength rim joists

• floor joists

Laminated strand lumber is often used for:

• high-strength load-carrying beams

• window and door headers

• low-strength rim joists

• floor joists

The web of wood I-beams may be made of:

• hardboard

• particleboard

• solid lumber

• oriented strand board

The flanges of wood I-beams are often made from:

• glue-laminated lumber

• laminated veneer lumber

• parallel strand lumber

• laminated strand lumber

The lams used in glue-laminated lumber are at approximately:

• the fiber-saturation point

• 19% moisture content

• equilibrium moisture content

• 30% moisture content

In glulam beams, specially selected tension lams are placed:

• at the top of the beam

• at the bottom of the beam

• in the center of the beam

• throughout the beam