Reference

Tables 4.3A-D, 4.3.7.1,4-9

Stud spacing

Wood Structural Panels

For shear

12,16,19.2, 24

Max 24" - 4.3.7.1 (5) , Table 4.3A, Table 4.3.3.2*

For bending strength

12,16, 24

Table 3.2.1

Fiberboard

Spacings included

12,16

16 Max - 4.3.7.4 (5) , Table 4.3A

Lumber Sheathing

All

12,16,19.2, 24

Doesn’t say

Plaster & Gypsum

(for more information, see Table for Gypsum and plaster)

Reference - Gypsum

Table 4.3C

Wire lath, plaster

12, 16

16” max

Gypsum lath

12, 16

16” max

Gypsum Sheathing

see Gypsum Provisions

max 16 or 24”

Gypsum Wallboard

see Gypsum Provisions

max 16 or 24”

* 19.2 Size included for 20" option in Unblocked Adjustment Factor table 4.3.3.2

Sheathing Orientation

Wood Structural Panels

For shear strength

Horizontal or Vertical

Both - 4.3.7.1 (1)

For bending strength

Horizontal or Vertical

Both - Table 3.2.1 A

Fiberboard

4.3.7.4(1)

Allowable orientation

Horizontal or Vertical

Horizontal or Vertical

Lumber Sheathing

Table 4.3D

Orientation included

Horizontal, Vertical, Diagonal, or Dbl. Diag.

Horizontal, Vertical, Diagonal, or Double diagonal

Plaster & Gypsum

4.3.7.5.1-4

Wire lath, plaster

Blank*

n/a

Gypsum lath

Blank*

Horizontal

Gypsum sheathing

Blank*

Horizontal or Vertical

Gypsum wallboard

Blank*

Horizontal or Vertical

*Left blank because it is irrelevant to design

Blocking

Wood Structural Panels

4.3.7.1 (1)

All

Blocked or Unblocked

Blocked or Unblocked

Fiberboard

4.3.7.4

All

Blocked

Blocked

Lumber Sheathing

4.3.7.6-.9

Vertical

Blocked

"Applied to studs and blocking"

All others

Unblocked

Not applicable

Gypsum

T4.3C

Wire lath, plaster

Unblocked

Unblocked

Gypsum lath

Unblocked

Unblocked

Gypsum Sheathing*

see Gypsum Provisions *

Either, Blocked, or Unblocked

Gypsum Wallboard*

see Gypsum Provisions *

Either or Blocked

*Whether the material must be blocked or unblocked or can be either depends on size, stud spacing, and orientation )

Sheathing surface

Plywood

Either or both

Either or both

Fiberboard

Either or both

Doesn’t say

Lumber sheathing

Either or both

Either or both

Gypsum materials

Either or both

Doesn’t say

Gypsum Wall Board Underlay

with Plywood

1/2" or 5/8" GWB

Table 4.3B

2-ply GWB

5/8" GWB only

Table 4.3C

with other materials

Not included

Not included