Free Tool · EN 1993-1-8 §6.2.5 + §6.2.8 · No Sign-up

EN 1993-1-8 Column Baseplate Design Calculator

Concrete bearing fjd with §6.7 area ratio α, T-stub effective cantilever c, combined NEd + MEd + VEd per §6.2.8, anchor bolt tension (Table 3.4) + pull-out cone (EN 1992-4 §7.2), shear friction, and column-to-plate weld check. Compression, large eccentricity, and uplift cases. No sign-up.

Column Section
Baseplate Geometry
Foundation
Anchor Bolts
Design Loads

N_Ed negative = uplift (tension). Set N_Ed < 0 for pure uplift case.

CONCRETE FOUNDATION N_Ed PLATE L_p × B_p A_eff ANCHOR ANCHOR c

Orange = baseplate  Green = effective T-stub area  Blue = anchor bolts

Design Results
39%
PASS ✓
⚠ Partial compression — anchor tension may be mobilised — e=160 mm
EN 1993-1-8 §6.2.5 + §6.2.8 — Key Intermediates
f_jd = β_j·k_j·f_cd 22.22 N/mm²
α=1.667 k_j=1.667 β_j=0.67 f_cd=20 MPa
c = t_p·√(f_yp/(3·f_jd·γ_M0)) 50.78 mm
A_eff (effective bearing area) 69276.73 mm²
Axial bearing resistance N_Rd = f_jd·A_eff 1539.48 kN
Lever arm z_eff 371.5 mm
Anchor tension capacity F_t,Rd (total) 813.31 kN
Pull-out cone capacity N_Rd,c (total) 1240.9 kN
Moment resistance M_Rd 302.15 kN·m
Utilisation Checks — EN 1993-1-8 §6.2.5 + §6.2.8
Check Resistance Demand η Result
Concrete bearing (§6.2.5) 1539.48 kN 500 kN 32.5% ✓ PASS
Moment capacity (§6.2.8) 302.15 kN·m 80 kN·m 26.5% ✓ PASS
Anchor bolt tension (Table 3.4) 813.31 kN 6.73 kN 0.8% ✓ PASS
Anchor pull-out cone (EN 1992-4) 1240.9 kN 6.73 kN 0.5% ✓ PASS
Shear transfer (friction + bolts) 1234.42 kN 50 kN 4.1% ✓ PASS
Column-to-plate weld (§4.5.3) 220.68 N/mm² 85.98 N/mm² 39% ✓ PASS

§6.2.5(7): f_jd = β_j·k_j·fcd, β_j = 2/3, k_j = α = min(√(A_c1/A_c0), 3) per EN 1992-1-1 §6.7 · §6.2.8: M_Rd = F_t,anchor·z_eff · EN 1992-4 §7.2: N_Rk,c = 8.9·fck^0.5·h_ef^1.5

Related Tools
→ Anchor Bolt Design — EN 1992-4 →
→ Bolt Capacity — EN 1993-1-8 Table 3.4
→ Fillet Weld Sizing — EN 1993-1-8 §4.5
→ Beam Moment Capacity — EN 1993-1-1
→ Bolted Splice Plate
→ End Plate Moment Connection
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