70x70 EA — Sizes, Dimensions & Properties
4 sizes in the 70x70 serial size group. All dimensions in mm, section properties in cm units.
| Designation | Mass (kg/m) | Leg (mm) | t (mm) | A (cm2) | Ixx (cm4) | rxx (cm) | rv (cm) |
|---|---|---|---|---|---|---|---|
| 70x70x6 | 6.38 | 70 | 6 | 8.13 | 36.9 | 2.13 | 1.37 |
| 70x70x7 | 7.38 | 70 | 7 | 9.4 | 42.3 | 2.12 | 1.36 |
| 70x70x8 | 8.36 | 70 | 8 | 10.6 | 47.5 | 2.11 | 1.36 |
| 70x70x10 | 10.3 | 70 | 10 | 13.1 | 57.2 | 2.09 | 1.35 |
70x70x6 EA
- Designation
- 70x70x6
- Mass per Metre
- 6.38 kg/m
- Leg Length
- 70 mm
- Thickness (t)
- 6 mm
- Root Radius (r)
- 9 mm
- Toe Radius (r2)
- 4.5 mm
- Cross-Sectional Area
- 8.13 cm2
- Centroid Distance cx
- 1.93 cm
- Centroid Distance cy
- 1.93 cm
- Second Moment of Area Ixx
- 36.9 cm4
- Second Moment of Area Iyy
- 36.9 cm4
- Radius of Gyration rxx
- 2.13 cm
- Radius of Gyration ryy
- 2.13 cm
- Elastic Modulus Zxx
- 7.27 cm3
- Elastic Modulus Zyy
- 7.27 cm3
- Second Moment of Area Iu
- 58.5 cm4
- Second Moment of Area Iv
- 15.3 cm4
- Radius of Gyration ru
- 2.68 cm
- Radius of Gyration rv
- 1.37 cm
- tan(alpha)
- 1
70x70x7 EA
- Designation
- 70x70x7
- Mass per Metre
- 7.38 kg/m
- Leg Length
- 70 mm
- Thickness (t)
- 7 mm
- Root Radius (r)
- 9 mm
- Toe Radius (r2)
- 4.5 mm
- Cross-Sectional Area
- 9.4 cm2
- Centroid Distance cx
- 1.97 cm
- Centroid Distance cy
- 1.97 cm
- Second Moment of Area Ixx
- 42.3 cm4
- Second Moment of Area Iyy
- 42.3 cm4
- Radius of Gyration rxx
- 2.12 cm
- Radius of Gyration ryy
- 2.12 cm
- Elastic Modulus Zxx
- 8.41 cm3
- Elastic Modulus Zyy
- 8.41 cm3
- Second Moment of Area Iu
- 67.1 cm4
- Second Moment of Area Iv
- 17.5 cm4
- Radius of Gyration ru
- 2.67 cm
- Radius of Gyration rv
- 1.36 cm
- tan(alpha)
- 1
70x70x8 EA
- Designation
- 70x70x8
- Mass per Metre
- 8.36 kg/m
- Leg Length
- 70 mm
- Thickness (t)
- 8 mm
- Root Radius (r)
- 9 mm
- Toe Radius (r2)
- 4.5 mm
- Cross-Sectional Area
- 10.6 cm2
- Centroid Distance cx
- 2.01 cm
- Centroid Distance cy
- 2.01 cm
- Second Moment of Area Ixx
- 47.5 cm4
- Second Moment of Area Iyy
- 47.5 cm4
- Radius of Gyration rxx
- 2.11 cm
- Radius of Gyration ryy
- 2.11 cm
- Elastic Modulus Zxx
- 9.52 cm3
- Elastic Modulus Zyy
- 9.52 cm3
- Second Moment of Area Iu
- 75.3 cm4
- Second Moment of Area Iv
- 19.7 cm4
- Radius of Gyration ru
- 2.66 cm
- Radius of Gyration rv
- 1.36 cm
- tan(alpha)
- 1
70x70x10 EA
- Designation
- 70x70x10
- Mass per Metre
- 10.3 kg/m
- Leg Length
- 70 mm
- Thickness (t)
- 10 mm
- Root Radius (r)
- 9 mm
- Toe Radius (r2)
- 4.5 mm
- Cross-Sectional Area
- 13.1 cm2
- Centroid Distance cx
- 2.09 cm
- Centroid Distance cy
- 2.09 cm
- Second Moment of Area Ixx
- 57.2 cm4
- Second Moment of Area Iyy
- 57.2 cm4
- Radius of Gyration rxx
- 2.09 cm
- Radius of Gyration ryy
- 2.09 cm
- Elastic Modulus Zxx
- 11.7 cm3
- Elastic Modulus Zyy
- 11.7 cm3
- Second Moment of Area Iu
- 90.5 cm4
- Second Moment of Area Iv
- 24 cm4
- Radius of Gyration ru
- 2.63 cm
- Radius of Gyration rv
- 1.35 cm
- tan(alpha)
- 1
70x70 EA — Overview
The 70x70 serial size group contains 4 sections, ranging from 10.3 kg/m to 6.38 kg/m. All sections in this group share the same nominal depth and width but differ in web and flange thickness, which affects the weight and structural capacity.
Section properties are sourced from the Tata Steel Blue Book / SCI P363. For structural design to BS EN 1993-1-1 (Eurocode 3), use these properties with the appropriate partial factors from the UK National Annex.
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Section properties from Tata Steel Blue Book / SCI P363 / BS 4-1:2005.