EN 1993-1-1 Steel Section · Section of HEM
HEM 280 — Section Properties & EN 1993-1-1 Classification
HEM 280 is a Class 1 — Plastic
section in S355 (fy = 355 MPa).
h = 310 mm
b = 288 mm
A = 13,950 mm²
Iy = 39,560 cm⁴
Wpl,y = 3043 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
10.92 → 1
3.69 → 1
Class 1
S235
1.10
10.92 → 1
3.69 → 1
Class 1
S235
1.05
10.92 → 1
3.69 → 1
Class 1
S275
1.00
10.92 → 1
3.69 → 1
Class 1
S275
1.10
10.92 → 1
3.69 → 1
Class 1
S275
1.05
10.92 → 1
3.69 → 1
Class 1
S355
1.00
10.92 → 1
3.69 → 1
Class 1
S355
1.10
10.92 → 1
3.69 → 1
Class 1
S355
1.05
10.92 → 1
3.69 → 1
Class 1
S420
1.00
10.92 → 1
3.69 → 1
Class 1
S420
1.10
10.92 → 1
3.69 → 1
Class 1
S420
1.05
10.92 → 1
3.69 → 1
Class 1
S460
1.00
10.92 → 1
3.69 → 1
Class 1
S460
1.10
10.92 → 1
3.69 → 1
Class 1
S460
1.05
10.92 → 1
3.69 → 1
Class 1
Property Value
h (mm) 310 b (mm) 288 tw / tf (mm) 18.5 / 30 r (mm) 24 A (mm²) 13,950 Iy (cm⁴) 39,560 Iz (cm⁴) 13,120 Wel,y (cm³) 2552 Wpl,y (cm³) 3043 iy / iz (mm) 168.4 / 97
Design Resistances · γM0
Resistance Value
Npl,Rd 3,278.3 kN Vpl,Rd 946.3 kN Mpl,Rd 715.1 kNm Mel,Rd 599.7 kNm
Resistance Value
Npl,Rd 2,980.2 kN Vpl,Rd 860.3 kN Mpl,Rd 650.1 kNm Mel,Rd 545.2 kNm
Resistance Value
Npl,Rd 3,122.1 kN Vpl,Rd 901.3 kN Mpl,Rd 681.1 kNm Mel,Rd 571.2 kNm
Resistance Value
Npl,Rd 3,836.3 kN Vpl,Rd 1,107.4 kN Mpl,Rd 836.8 kNm Mel,Rd 701.8 kNm
Resistance Value
Npl,Rd 3,487.5 kN Vpl,Rd 1,006.8 kN Mpl,Rd 760.7 kNm Mel,Rd 638 kNm
Resistance Value
Npl,Rd 3,653.6 kN Vpl,Rd 1,054.7 kN Mpl,Rd 797 kNm Mel,Rd 668.4 kNm
Resistance Value
Npl,Rd 4,952.3 kN Vpl,Rd 1,429.6 kN Mpl,Rd 1,080.3 kNm Mel,Rd 906 kNm
Resistance Value
Npl,Rd 4,502 kN Vpl,Rd 1,299.6 kN Mpl,Rd 982.1 kNm Mel,Rd 823.6 kNm
Resistance Value
Npl,Rd 4,716.4 kN Vpl,Rd 1,361.5 kN Mpl,Rd 1,028.8 kNm Mel,Rd 862.8 kNm
Resistance Value
Npl,Rd 5,859 kN Vpl,Rd 1,691.3 kN Mpl,Rd 1,278.1 kNm Mel,Rd 1,071.8 kNm
Resistance Value
Npl,Rd 5,326.4 kN Vpl,Rd 1,537.6 kN Mpl,Rd 1,161.9 kNm Mel,Rd 974.4 kNm
Resistance Value
Npl,Rd 5,580 kN Vpl,Rd 1,610.8 kN Mpl,Rd 1,217.2 kNm Mel,Rd 1,020.8 kNm
Resistance Value
Npl,Rd 6,417 kN Vpl,Rd 1,852.4 kN Mpl,Rd 1,399.8 kNm Mel,Rd 1,173.9 kNm
Resistance Value
Npl,Rd 5,833.6 kN Vpl,Rd 1,684 kN Mpl,Rd 1,272.5 kNm Mel,Rd 1,067.2 kNm
Resistance Value
Npl,Rd 6,111.4 kN Vpl,Rd 1,764.2 kN Mpl,Rd 1,333.1 kNm Mel,Rd 1,118 kNm
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HEM 280 — Cross-Section Classification & Resistances
This page shows pre-computed EN 1993-1-1 design values for the HEM 280 HEM section. The governing cross-section class is 1 (Class 1 — Plastic), 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).