171x178 TEE-UB — Sizes, Dimensions & Properties
4 sizes in the 171x178 serial size group. All dimensions in mm, section properties in cm units.
| Designation | Mass (kg/m) | Cut From | h (mm) | b (mm) | A (cm2) | Ixx (cm4) | Iyy (cm4) |
|---|---|---|---|---|---|---|---|
| 171x178x34 | 33.5 | 356x171x67 UB | 181.6 | 173.2 | 42.7 | 1,150 | 681 |
| 171x178x29 | 28.5 | 356x171x57 UB | 178.9 | 172.2 | 36.3 | 986 | 554 |
| 171x178x26 | 25.5 | 356x171x51 UB | 177.4 | 171.5 | 32.4 | 882 | 484 |
| 171x178x23 | 22.5 | 356x171x45 UB | 175.6 | 171.1 | 28.7 | 798 | 406 |
171x178x34 TEE-UB
- Designation
- 171x178x34
- Cut From
- 356x171x67 UB
- Mass per Metre
- 33.5 kg/m
- Depth of Section (h)
- 181.6 mm
- Width of Section (b)
- 173.2 mm
- Web Thickness (tw)
- 9.1 mm
- Flange Thickness (tf)
- 15.7 mm
- Root Radius (r)
- 10.2 mm
- Cross-Sectional Area
- 42.7 cm2
- Second Moment of Area Ixx
- 1,150 cm4
- Second Moment of Area Iyy
- 681 cm4
- Elastic Modulus Zxx (Flange)
- 288 cm3
- Elastic Modulus Zxx (Toe)
- 81.5 cm3
- Elastic Modulus Zyy
- 78.6 cm3
- Plastic Modulus Sxx
- 145 cm3
- Plastic Modulus Syy
- 121 cm3
- Radius of Gyration rxx
- 5.2 cm
- Radius of Gyration ryy
- 3.99 cm
- Centroid Distance cy
- 4 cm
171x178x29 TEE-UB
- Designation
- 171x178x29
- Cut From
- 356x171x57 UB
- Mass per Metre
- 28.5 kg/m
- Depth of Section (h)
- 178.9 mm
- Width of Section (b)
- 172.2 mm
- Web Thickness (tw)
- 8.1 mm
- Flange Thickness (tf)
- 13 mm
- Root Radius (r)
- 10.2 mm
- Cross-Sectional Area
- 36.3 cm2
- Second Moment of Area Ixx
- 986 cm4
- Second Moment of Area Iyy
- 554 cm4
- Elastic Modulus Zxx (Flange)
- 248 cm3
- Elastic Modulus Zxx (Toe)
- 70.9 cm3
- Elastic Modulus Zyy
- 64.4 cm3
- Plastic Modulus Sxx
- 125 cm3
- Plastic Modulus Syy
- 99.4 cm3
- Radius of Gyration rxx
- 5.21 cm
- Radius of Gyration ryy
- 3.91 cm
- Centroid Distance cy
- 3.97 cm
171x178x26 TEE-UB
- Designation
- 171x178x26
- Cut From
- 356x171x51 UB
- Mass per Metre
- 25.5 kg/m
- Depth of Section (h)
- 177.4 mm
- Width of Section (b)
- 171.5 mm
- Web Thickness (tw)
- 7.4 mm
- Flange Thickness (tf)
- 11.5 mm
- Root Radius (r)
- 10.2 mm
- Cross-Sectional Area
- 32.4 cm2
- Second Moment of Area Ixx
- 882 cm4
- Second Moment of Area Iyy
- 484 cm4
- Elastic Modulus Zxx (Flange)
- 224 cm3
- Elastic Modulus Zxx (Toe)
- 63.9 cm3
- Elastic Modulus Zyy
- 56.5 cm3
- Plastic Modulus Sxx
- 113 cm3
- Plastic Modulus Syy
- 87.1 cm3
- Radius of Gyration rxx
- 5.21 cm
- Radius of Gyration ryy
- 3.86 cm
- Centroid Distance cy
- 3.94 cm
171x178x23 TEE-UB
- Designation
- 171x178x23
- Cut From
- 356x171x45 UB
- Mass per Metre
- 22.5 kg/m
- Depth of Section (h)
- 175.6 mm
- Width of Section (b)
- 171.1 mm
- Web Thickness (tw)
- 7 mm
- Flange Thickness (tf)
- 9.7 mm
- Root Radius (r)
- 10.2 mm
- Cross-Sectional Area
- 28.7 cm2
- Second Moment of Area Ixx
- 798 cm4
- Second Moment of Area Iyy
- 406 cm4
- Elastic Modulus Zxx (Flange)
- 197 cm3
- Elastic Modulus Zxx (Toe)
- 59.1 cm3
- Elastic Modulus Zyy
- 47.4 cm3
- Plastic Modulus Sxx
- 104 cm3
- Plastic Modulus Syy
- 73.3 cm3
- Radius of Gyration rxx
- 5.28 cm
- Radius of Gyration ryy
- 3.76 cm
- Centroid Distance cy
- 4.05 cm
171x178 TEE-UB — Overview
The 171x178 serial size group contains 4 sections, ranging from 22.5 kg/m to 33.5 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.