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Residential Construction > Engineered Wood Products > Flashcards

Engineered Wood Products Flashcards

1
Q

What is the difference between columns and beams?

A

A column is a vertical structural member and a beam is a horizontal structural member. Column support vertical loads and is acting in compression. Beams act as a structural element that transfers loads from the slab and two columns. They’re installed to carry the load from one load-bearing wall to another.

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2
Q

What is the consequence of beam failure?

A

Sagging ( which will cause floors to creak )

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3
Q

Name the 3 types of WOOD beams.

A
  1. Built-up wood beam
  2. Solid wood beam
  3. Gluelam wood beam
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4
Q

True or False. Beams can be wood or steel.

A

True.

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5
Q

True or False. Built-up beams can only be made of 3 pieces of lumber.

A

False. Built-up beams can have a minimum of 3 pieces of lumber and a maximum of 5.

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6
Q

What are the advantages of steel beams?

A
  • It does not shrink
  • It is fire-resistant
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7
Q

What are the disadvantages of steel beams?

A
  • It is expensive
  • There are delivery delays
  • It is heavy
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8
Q

What is a beam pocket?

A

A beam pocket is a recessed space designed to hold the end of an intersecting beam in a concrete wall, a masonry wall, or a column. Beam pockets in exterior structures are often subject to water leakage.

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9
Q

At what dimension should a 2x trimmer be installed?

A

minimum 2’-8”

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10
Q

At what dimension should a 2x header be installed?

A

minimum 4’-0”

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11
Q

Define “Cantilever”

A

A beam or a slab that extends beyond its last point of support.

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12
Q

What is “LVL” an abbreviation for?

A

Laminated Veneer Lumber

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13
Q

What is “LSL” an abbreviation for?

A

Laminated Strand Lumber

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14
Q

What is “SCL” an abbreviation for?

A

Structural Composite Lumber

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15
Q

What is “PSL” an abbreviation for?

A

Parallel Strand Lumber

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16
Q

What is a wooden I-joist?

A

It is a wooden structural member manufactured in the shape of an I. It is typically used as a floor joist or roof rafter.

17
Q

What is a “Flange”?

A

It is the top and bottom part of a wooden I-joist. This material can be made of solid sawn lumber ( ex: 2 x 3 or 2 x4 ) or a manufactured product ( ex: LVL or LSL )

18
Q

What is the typical spacing of a joist?

A

12”, 16”, 19.2” and 24”

19
Q

What is a “Web”?

A

It is the inside part of the “I” configuration that connects and aligns the top and bottom flanges. It is typically made of OSB 3/8” or 1/2”.

20
Q

What is the typical depth of a joist?

A

9 1/2”, 11 7/8”, 14”, 16”

21
Q

What is a wood truss joist?

A

A truss joist is basically a rectangle made from two-by-four lumber that is fastened together with metal strap fasteners.

22
Q

What are the advantages of a wood truss joist?

A
  • It is flexible
  • It is easy to install
  • It has long spans, so no beams or columns are necessary
  • It leaves space for wires and plumbing, so there’s no drill through them
23
Q

What is finger-jointed framing lumber?

A

Finger-joints are used to join short pieces of wood together to form pieces of greater length. The joint is composed of several meshing wedges or “fingers” of wood in two adjacent pieces and is held together with structural adhesives.

24
Q

What is “OSB” an abbreviation for?

A

Oriented Strand Board

25
Q

What is the moisture factor of LSL (Laminated Strand Lumber)?

A

11%

26
Q

Describe how LVLs are manufactured.

A

This is manufactured by laminating veneers with the grain laid up parallel.

27
Q

Describe how PSLs are manufactured.

A

This material is manufactured by laminating strips of veneer with the grain laid up parallel.

28
Q

What is a Live Load?

A

Any load on the structure exclusive of the actual construction materials. It is a moving, temporary or variable load such as snow, wind, people, furniture, construction load, etc.

29
Q

What is a Dead Load?

A

The weight of the structure itself. Any load that would be considered as permanent.

30
Q

Define “Total Load”

A

It is the sum of Live Load and Dead Load.

Residential Construction (9 decks)

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