Yield Limit Equations for Nails

 

Textbook section 11.7

 

 

Penetration = nail length - thickness of side-member  (unless it sticks out of the main member)

p = l - tstm


source

 

 

Dowel bearing length lm

If p ≥ 10D

lm = p 
lm
= l - tstm

 

If 6D ≤ p < 10D

lm = p - tip length
lm
= l - ts - 2Dtm

or use a reduction factor with NDS tables

 

 

Bending Yield Strength Fyb

ASTM F1575 - Standard Test Method for Determining Bending Yield Moment of Nails

 

NDS

higher Fyb for smaller-diameter nails due to additional cold working during manufacture

Fyb = 130.4 - 213.9D for low-carbon nails

30% higher for threaded hardened-steel nails

 

 

Engineered Construction Nails

minimum Fyb

ASTM F1667 - Standard Specification for Driven Fasteners: Nail, Spikes and Staples

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