201bA: Wall Framing - A

Question 1

5 main framing systems

Answer 1

1) platform (houses)
2) balloon (old houses)
3) post and beam (timber framing)
4) pole (farm buildings)
5) structural insulated panels (expensive pre-fab)

Question 2

What is framing with separately constructed floors to then build and stand walls on?

Answer 2

Platform

Question 3

Number of plates in walls

Answer 3

3 (bottom/top/cap)

Question 4

What must be used to connect walls with only a single top plate?

Answer 4

Metal strap

Question 5

If a truss lands on top of a stud or within 2” of its edge, can I use a single top plate?

Answer 5

Yes

Question 6

What member spreads the weight around an opening?

Answer 6

Lintel

Question 7

What members transfer the lintel load down to the floor?

Answer 7

Trimmer

Question 8

What members frame the BOTTOM HEIGHT of a window opening (and sometimes top if specified)?

Answer 8

Cripple

Question 9

3 Common stud spacing

Answer 9

16”
19.2”
24”

Question 10

3 common precision end trimmed studs (PETS)

Answer 10

92-5/8 (8’)
104-5/8 (9’)
116-5/8 (10’)

Question 11

3 common finished wall heights (studs + 3 plates)

Answer 11

97-1/8”
109-1/8”
121-1/8”

Question 12

Besides spreading load out, what 2 additional things do wall plates achieve

Answer 12

1) keep OC spacing
2) fire stop

Question 13

How much shrinkage per floor can you expect with traditional lumber?

Answer 13

1/2”

Question 14

What differs balloon from platform framing?

Answer 14

Balloon = continuous wall studs from sill plate to roof

Question 15

How do we support second story floors within the walls of balloon framing?

Answer 15

Ribbon; blocks or notched in framing to rest joists on

Question 16

Common OC for post and beam (hint: OSB sheet

Answer 16

8’

Question 17

Can you toenail post and beam and leave it?

Answer 17

No, typically need engineered metal connectors

Question 18

Common roof sheathing for p+b (thicker than normal to account for large spans)

Answer 18

1-1/2”

Question 19

What is the “foundation” of a pole building?

Answer 19

The large diameter poles, dug into the ground

Question 20

2 Common ways to build pole floors

Answer 20

1) cut pole at finished floor height and bolt floor on, platform frame up
2) leave poles full length, and build floor around, poles finish at roof

Question 21

What are SIPS

Answer 21

Structural Insulated Panels

Question 22

Do SIPS usually have studs inside?

Answer 22

Not always

Question 23

Lumber for framing moisture content (under 20%)

Answer 23

19%

Question 24

When is shrinkage highly likely

Answer 24

Load bearing members on edge or on flat

Question 25

What rigid finishes can shrinkage affect

Answer 25

1) drywall 2) stucco 3) window and door frames

Question 26

Typical wall wind bracing, 3 points

Answer 26

1) AT LEAST 18x89 (1x4) 2) notched into studs 3) 45deg angle from top to bottom plates

Question 27

Why can balloon framing be advantageous?

Answer 27

Minimal material framed on edge = less shrinkage