Withdrawal Load on Dowel-Type Fastener

Easily evaluate withdrawal resistance for threaded and nailed fasteners per NDS provisions. CalcBook automatically determines design withdrawal strength based on fastener type, penetration depth, wood density, and grain orientation. Nail and screw-specific adjustment factors are included, ensuring accurate and code-compliant capacity checks.

Fastener Types Covered:

• Lag Screws

• Wood Screws

• Common, box, and sinker nails

• Post-frame & roof sheathing ring shank nails

Included Modification Factors:

• Load Duration

• Wet Service

• Temperature

• End Grain

• Toe-Nail

• Format Conversion

• Time Effect