EN 1993-1-1 Steel Section · Section of HEA
HEA 280 — Section Properties & EN 1993-1-1 Classification
HEA 280 is a Class 3 — Elastic
section in S355 (fy = 355 MPa).
S235: Class 1
S275: Class 2
h = 270 mm
b = 280 mm
A = 7,214 mm²
Iy = 13,670 cm⁴
Wpl,y = 1170 cm³
EN / NL / DE annexes
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Cross-Section Classification (EN 1993-1-1 Table 5.2)
Steel Grade
γM0
Web (c/tw )
Flange (c/tf )
Class
S235
1.00
24.5 → 1
8.62 → 1
Class 1
S235
1.10
24.5 → 1
8.62 → 1
Class 1
S235
1.05
24.5 → 1
8.62 → 1
Class 1
S275
1.00
24.5 → 1
8.62 → 2
Class 2
S275
1.10
24.5 → 1
8.62 → 2
Class 2
S275
1.05
24.5 → 1
8.62 → 2
Class 2
S355
1.00
24.5 → 1
8.62 → 3
Class 3
S355
1.10
24.5 → 1
8.62 → 3
Class 3
S355
1.05
24.5 → 1
8.62 → 3
Class 3
S420
1.00
24.5 → 1
8.62 → 3
Class 3
S420
1.10
24.5 → 1
8.62 → 3
Class 3
S420
1.05
24.5 → 1
8.62 → 3
Class 3
S460
1.00
24.5 → 2
8.62 → 3
Class 3
S460
1.10
24.5 → 2
8.62 → 3
Class 3
S460
1.05
24.5 → 2
8.62 → 3
Class 3
Property Value
h (mm) 270 b (mm) 280 tw / tf (mm) 8 / 13 r (mm) 24 A (mm²) 7,214 Iy (cm⁴) 13,670 Iz (cm⁴) 4,760 Wel,y (cm³) 1013 Wpl,y (cm³) 1170 iy / iz (mm) 137.7 / 81.2
Design Resistances · γM0
Resistance Value
Npl,Rd 1,695.3 kN Vpl,Rd 489.4 kN Mpl,Rd 274.9 kNm Mel,Rd 238.1 kNm
Resistance Value
Npl,Rd 1,541.2 kN Vpl,Rd 444.9 kN Mpl,Rd 250 kNm Mel,Rd 216.4 kNm
Resistance Value
Npl,Rd 1,614.6 kN Vpl,Rd 466.1 kN Mpl,Rd 261.9 kNm Mel,Rd 226.7 kNm
Resistance Value
Npl,Rd 1,983.8 kN Vpl,Rd 572.7 kN Mpl,Rd 321.8 kNm Mel,Rd 278.6 kNm
Resistance Value
Npl,Rd 1,803.5 kN Vpl,Rd 520.6 kN Mpl,Rd 292.5 kNm Mel,Rd 253.2 kNm
Resistance Value
Npl,Rd 1,889.4 kN Vpl,Rd 545.4 kN Mpl,Rd 306.4 kNm Mel,Rd 265.3 kNm
Resistance Value
Npl,Rd 2,561 kN Vpl,Rd 739.3 kN Mpl,Rd 359.6 kNm Mel,Rd 359.6 kNm
Resistance Value
Npl,Rd 2,328.2 kN Vpl,Rd 672.1 kN Mpl,Rd 326.9 kNm Mel,Rd 326.9 kNm
Resistance Value
Npl,Rd 2,439 kN Vpl,Rd 704.1 kN Mpl,Rd 342.5 kNm Mel,Rd 342.5 kNm
Resistance Value
Npl,Rd 3,029.9 kN Vpl,Rd 874.7 kN Mpl,Rd 425.5 kNm Mel,Rd 425.5 kNm
Resistance Value
Npl,Rd 2,754.4 kN Vpl,Rd 795.1 kN Mpl,Rd 386.8 kNm Mel,Rd 386.8 kNm
Resistance Value
Npl,Rd 2,885.6 kN Vpl,Rd 833 kN Mpl,Rd 405.2 kNm Mel,Rd 405.2 kNm
Resistance Value
Npl,Rd 3,318.4 kN Vpl,Rd 958 kN Mpl,Rd 466 kNm Mel,Rd 466 kNm
Resistance Value
Npl,Rd 3,016.8 kN Vpl,Rd 870.9 kN Mpl,Rd 423.6 kNm Mel,Rd 423.6 kNm
Resistance Value
Npl,Rd 3,160.4 kN Vpl,Rd 912.3 kN Mpl,Rd 443.8 kNm Mel,Rd 443.8 kNm
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HEA 280 — Cross-Section Classification & Resistances
This page shows pre-computed EN 1993-1-1 design values for the HEA 280 HEA section. The governing cross-section class is 3 (Class 3 — Elastic), which determines whether the section may develop its full plastic moment capacity (Class 1–2) or is limited to the elastic moment (Class 3–4). Npl,Rd, Vpl,Rd, Mpl,Rd, and Mel,Rd are shown for all combinations of steel grade (S235 to S460) and national annex (EN γM0=1.00, NL γM0=1.10, DE γM0=1.05).