Wood Light Framing

Question 1

Name the 3 framing approaches common in residential construction.

Answer 1

1. Platform Framing
2. Balloon Framing
3. Timber/Post/Beam Framing

Question 2

Lumber used for structural framing of buildings in Canada is generally derived…
a. from softwood species
b. from hardwood species
c. from both softwoods and hardwoods depending on the price of lumber
d. from both softwoods and hardwoods depending on the time of year

Answer 2

a. from softwood species

Question 3

The term S-Dry implies that the lumber has been…
a. stored in a dry climate
b. surfaced when its moisture content was </= 19%
c. surfaced when its moisture content was </= 25%
d. sawed when its moisture content was </= 19%
e. sawed when its moisture content was </= 25%

Answer 3

b. surfaced when its moisture content was </= 19%

Question 4

Pressure-treated lumber is effective…
a. only against fungal attack
b. only against water damage
c. only against rot
d. both b and c
e. all of above

Answer 4

e. all of above

Question 5

The basis for distinguishing wood as a board, dimensional lumber, and timber are…
a. the species of wood
b. the strength of the wood
c. length of the wood
d. cross-sectional dimensions of the wood

Answer 5

d. cross-sectional dimensions of the wood

Question 6

Plywood subflooring panels should be placed with their longer dimension…
a. perpendicular to joists
b. parallel to joists
c. either direction - it doesn’t matter

Answer 6

a. perpendicular to joists

Question 7

Floor joists are selected following 3 criteria. Name them.

Answer 7

1. Strength
2. Deflection
3. Vibration

Question 8

What is the major difference between I-joist and a truss joist?

Answer 8

An I-joist has a solid web, whereas a truss joist has an open web.

Question 9

A built-up beam is composed of…
a. 2 or 3 boards nailed together
b. 3-5 pieces of lumber nailed together
c. glue-laminated lumber set on its edge

Answer 9

b. 3-5 pieces of lumber nailed together

Question 10

Name the 2 types of wood and their use.

Answer 10

1. Hard Wood:
   - Furniture
   - Structures
   - Finishes
2. Soft Wood:
   - Framing

Question 11

Describe the process of “seasoning the wood”

Answer 11

Seasoned at sawmills, drying the wood reduces its moisture content from 300% to 30%. At 30%, the wood starts to shrink and its strength increases.

Question 12

What are the different Grades of Lumber:

Answer 12

1. S-Dry: Moisture Content </= 19%, dried outdoors
2. Kiln-Fried: Moisture Content </= 19%, industrial
3. S-Green: Moisture Content </= 19%, cut and planned ( not seasoned )

Question 13

Define SFS

Answer 13

Surface for size

Question 14

What are the real dimensions for these nominal dimensions…
a. 1 x 3
b. 2 x 4
c. 2 x 6
d. 2 x 8
e. 2 x10
f. 2 x 12
g. 6 x 6

Answer 14

a. 3/4 x 2 1/2
b. 1 1/12 x 3 1/2
c. 1 1/12 x 5 1/2
d. 1 1/12 x 7 1/4
e. 1 1/2 x 9 1/4
f. 1 1/12 x 11 1/4
g. 5 1/2 x 5 1/2

Question 15

True or False. Balloon Framing is no longer in use.

Answer 15

True.

Question 16

Name the advantage of Balloon Framing.

Answer 16

• Easy to build
• Reducing material waste

Question 17

Name the disadvantage of Balloon Framing.

Answer 17

The disadvantage of balloon framing is the lumber is large and hard to handle and the vertical hollow spaces allow for fires to travel quickly. It has poor stability and can buckle.

Question 18

Why is Platform Framing better than Balloon Framing?

Answer 18

Platform Framing is short and easily handled. Fire doesn’t rise and it is more comfortable to work with.

Question 19

Name the 3 types of nail connections.

Answer 19

1. Face Nail
2. End Nail
3. Toe Nail

Question 20

What is the typical dimension for furring/strapping?

Answer 20

1 x 3

Question 21

What is furring/strapping used for?

Answer 21

• To provide nice level surfaces
  Definition: Wood or metal strips attached to a wall or other surfaces to provide an even base for a finish material.

Question 22

Name the 3 types of joist restraints and their goal.

Answer 22

1. Blocking: To stiffen the floor
2. Bridging: To prevent twisting/warping
3. Furring: To spread load over a broader area

Question 23

What is surfacing?

Answer 23

The act of shaping the boards so that each board is smooth and uniformed in thickness.

Question 24

How is the sub-flooring installed?

Answer 24

It is screwed/glued to joists, and is installed perpendicularly to joists to provide greater floor stiffness.