Timber Connection Calculator
Design bolted timber connections per NDS: calculate reference design values, group action factor, and connection capacity.
Inputs
mm
mm
bolts
(1=parallel, 2=perp.)
mm
Results
Total Connection Capacity
5,801.38 kN
Spacing Adequate?
1 (1=yes, 0=no)
Reference Design Value (Z)1,495.2 kN
Adjusted Capacity per Bolt1,450.34 kN
Group Action Factor (Cg)0.97
How to Use This Calculator
- Select the wood species and connection type (nails, bolts, screws, or timber rivets).
- Enter the fastener diameter, length, and number of shear planes.
- Input the applied lateral and withdrawal loads in lbs.
- Review the Design Value per Fastener and the Number of Fasteners Required.
- Apply adjustment factors for moisture content, temperature, and load duration per NDS.
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