Rigid Moment-Resisting Frame Walls: The Frame Method of Analysis - The Analysis of Irregular Shaped Structures - page 508

Flange/Web Shear Transfer for Nailed Members (See Fig. 14.15)

VQ
Ib

f

f = shearstressatflange, psi

S

T

Vsbf
nail

= shearstressonfastener, lb

s

VQ
Ib

f

nF

nail ≥

()() bs

T

nF I

nail
fl

t

Nail spacing s = ininches

VQ

where s = nail spacing, in

n = number of fasteners in section

F nail = fastener capacity

Figure 14.15 shows the condition for a single flange with single and double webs.
The force to each fastener is shown by the hatched area in the figure, which is basi-
cally the flange depth times the nail spacing multiplied by the shear stress. For the
single web the number of fasteners per nail spacing is n = 1. For webs on both sides of
the flange, the number of fasteners per nail spacing is n = 2. The figure also shows the
condition for a double flange plate. Each 2× flange plate should receive nailing on both
sides of the flange, n = 4. The double plate allows the nails to be staggered to produce a
wider nail spacing to avoid splitting.

F i g u r e 14.15 Shear low into the langes, nails only.