A review of the current design code provisions for nailed joints
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Date
1999
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Publisher
University of New Brunswick
Abstract
A series of experiments were carried out in order to predict material properties and joint
capacities. The capacity of nails loaded with withdrawal with various penetrations were tested.
The capacity of laterally loaded double shear and single shear joints were also tested. The 5th
percentile adjusted capacities are compared to those in the design code CSA Standard 086.1-94.
The mean capacities of laterally loaded joints are compared to predictions from the "European
Yield Model" (EYM). The design code values and the EYM predictions were close for the
double shear joints. The design code overestimates the joint capacities for single shear joints,
while the EYM predictions were quite close to the mean tested values. The withdrawal tests
show that the equation used to calibrate CSA Standard 086.1-94 overestimates the adjusted 5th
percentile values by a substantial amount. This comparison was based on the equation used to
calibrate CSA Standard 086.1-94. The results show a small increase in withdrawal resistance
for multiple nail withdrawal at the 5th percentile level. Recommendations are made regarding
revision of provisions in the design code.
Key words: nail embedment,