EHS 300×150×8 - Section Properties

The EHS 300×150×8 is a elliptical hollow section with a mass of 42.8 kg/m, an overall depth of 300 mm and width of 150 mm and a wall thickness of 8 mm. It has a cross-sectional area of 54.5 cm², a second moment of area Iᵧ of 4810 cm⁴, a plastic modulus Wₚₗ,ᵧ of 449 cm³, tabulated by CivilAxis from BS EN 10210-2:2006 (SCI P363 Blue Book).

Mass: 42.8 kg/m
Depth: 300 mm
Width: 150 mm
Wall thickness: 8 mm
Area: 54.5 cm²

Ask about capacity, buckling or detailing for EHS 300×150×8.

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Dimension symbols for EHS Hot-finished sections. Not to scale.

EHS 300×150×8 section properties to BS EN 10210-2:2006.
Geometry
Depth of section	h	300
Width of section	b	150
Wall thickness	t	8
Mass and area
Mass per metre	mass	42.8
Cross-sectional area	A	54.5
Bending about the major axis (y-y)
Area moment of inertia about y-axis	I_y	4810
Elastic section modulus about y-axis	W_el,y	321
Plastic section modulus about y-axis	W_pl,y	449
Radius of gyration about y-axis	i_y	9.39
Bending about the minor axis (z-z)
Area moment of inertia about z-axis	I_z	1620
Elastic section modulus about z-axis	W_el,z	215
Plastic section modulus about z-axis	W_pl,z	275
Radius of gyration about z-axis	i_z	5.44
Torsion and warping
Torsion constant (St Venant)	I_t	4850
Section modulus for torsion	W_t	481
Surface area
Surface area per metre	SA/m	0.726
Surface area per tonne	SA/t	17	m²/t

Is EHS 300×150×8 strong enough?

Simply supported beam, uniform load, major-axis bending - to EN 1993-1-1.

Span (m)Load (kN/m)Grade

✅Passes - 60% utilised, deflection governs

Bending25%

40.5 / 159.4 kNm

Shear4%

27.0 / 744.7 kN

Deflection60%

10.0 / 16.7 mm

Class 1 section. ULS uses γQ = 1.5 on the load you enter; deflection uses the unfactored load against L/360. Lateral-torsional buckling is not included - the compression flange is assumed restrained.