Free Tool · EN 1993-1-8 §6.2 + §3.6 · Fin Plate Moment Connection

Fin Plate Moment Connection Calculator

Design fin plate connections carrying both shear V_Ed and moment M_Ed per EN 1993-1-8. Computes bolt group eccentricity: V_bd = V/n + M·e/Σdᵢ². Also checks plate shear, bending, fillet weld, and classifies the connection as flexible (shear only) or rigid-partial (moment).

Connected Beam

Beam section

Beam steel grade

Fin Plate

b_fp — plate width (mm)

h_fp — plate height (mm)

t_fp — plate thickness (mm)

Plate steel grade

Bolts

Bolt grade

Bolt size

Total bolt count

Rows (vertical)

e — offset from column face (mm)

Offset from column face to bolt group centroid

e₁ — end distance in load dir (mm)

e₂ — edge distance (mm)

p₁ — pitch in load direction (mm)

Weld to Column

a_w — fillet weld leg size (mm)

Weld sides

Both sides One side

Shear plane

Through threads (As) Through shank (A)

Applied Loads

V_Ed — design shear (kN)

M_Ed — design moment (kNm)

Enter 0 for shear-only connection

National Annex

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Bolt Group — Combined Shear from V + M·e/Σdᵢ²

V_Ed — kN

M_Ed — kNm

Offset e — mm

Total bolts n —

Σdᵢ² — mm²

V_shear / bolt — kN

V_moment / bolt — kN

V_bd (combined / bolt) — kN

F_v,Rd / bolt — kN

Verification Summary

Check	Clause	Resistance	η	Verdict

Fin plate moment connection — bolt group eccentricity (schematic)

Export calculation report

Enter your email to receive a formatted calculation sheet with EN 1993-1-8 clause references.

Related Tools

→ Fin Plate Shear (no moment)

→ Endplate Moment Connection

→ Weld Sizing

→ Column Baseplate

→ Bolt Capacity

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