Friction-type bolted joint (8.8/TF) calculator

Inputs in the worked example

The live calculator starts with these values; change any of them and every result, check and diagram updates instantly.

Worked example — results

• ✓ Interaction ≤ 1.0
• ✓ Bolt size M16 or larger (TF)

Method, formulas and assumptions

• Minimum bolt tension Nti = CHOOSE(3,0,95,145,210,335,490) = 145 kN
• φVsf per bolt = 0.7 μ nei Nti kh = 0.7*0.35*1*145*1 = 35.525 kN
• Joint slip capacity = 6*35.525 = 213.15 kN
• Vsf*/φVsf + Ntf*/φNti = 200/213.15+0/(0.7*6*145) = 0.93831
• Limit = 1 = 1

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