356x368 UC — Sizes, Dimensions & Properties

4 sizes in the 356x368 serial size group. All dimensions in mm, section properties in cm units.

Designation	Mass (kg/m)	h (mm)	b (mm)	tw (mm)	tf (mm)	A (cm2)	Ixx (cm4)	Iyy (cm4)	Zxx (cm3)	Sxx (cm3)	rxx (cm)	ryy (cm)
356x368x202	201.9	374.6	374.7	16.5	27	257	66,300	23,700	3,540	3,970	16.1	9.6
356x368x177	177	368.2	372.6	14.4	23.8	226	57,100	20,500	3,100	3,460	15.9	9.54
356x368x153	152.9	362	370.5	12.3	20.7	195	48,600	17,600	2,680	2,960	15.8	9.49
356x368x129	129	355.6	368.6	10.4	17.5	164	40,200	14,600	2,260	2,480	15.6	9.43

356x368x202 UC

Designation: 356x368x202
Serial Size: 356x368
Mass per Metre: 201.9 kg/m
Depth of Section (h): 374.6 mm
Width of Section (b): 374.7 mm
Web Thickness (tw): 16.5 mm
Flange Thickness (tf): 27 mm
Root Radius (r): 15.2 mm
Depth Between Fillets (d): 290.2 mm
Local Buckling Ratio d/tw: 17.6
Local Buckling Ratio cf/tf: 6.94
Second Moment of Area Ixx: 66,300 cm4
Second Moment of Area Iyy: 23,700 cm4
Elastic Modulus Zxx: 3,540 cm3
Elastic Modulus Zyy: 1,260 cm3
Plastic Modulus Sxx: 3,970 cm3
Plastic Modulus Syy: 1,920 cm3
Radius of Gyration rxx: 16.1 cm
Radius of Gyration ryy: 9.6 cm
Cross-Sectional Area: 257 cm2
Buckling Parameter (u): 0.844
Torsional Index (x): 13.4
Warping Constant (Iw): 7.16 dm6
Torsional Constant (It): 558 cm4
Surface Area per Metre: 2.19 m2/m
Surface Area per Tonne: 10.8 m2/t

356x368x177 UC

Designation: 356x368x177
Serial Size: 356x368
Mass per Metre: 177 kg/m
Depth of Section (h): 368.2 mm
Width of Section (b): 372.6 mm
Web Thickness (tw): 14.4 mm
Flange Thickness (tf): 23.8 mm
Root Radius (r): 15.2 mm
Depth Between Fillets (d): 290.2 mm
Local Buckling Ratio d/tw: 20.2
Local Buckling Ratio cf/tf: 7.83
Second Moment of Area Ixx: 57,100 cm4
Second Moment of Area Iyy: 20,500 cm4
Elastic Modulus Zxx: 3,100 cm3
Elastic Modulus Zyy: 1,100 cm3
Plastic Modulus Sxx: 3,460 cm3
Plastic Modulus Syy: 1,670 cm3
Radius of Gyration rxx: 15.9 cm
Radius of Gyration ryy: 9.54 cm
Cross-Sectional Area: 226 cm2
Buckling Parameter (u): 0.844
Torsional Index (x): 15
Warping Constant (Iw): 6.09 dm6
Torsional Constant (It): 381 cm4
Surface Area per Metre: 2.17 m2/m
Surface Area per Tonne: 12.3 m2/t

356x368x153 UC

Designation: 356x368x153
Serial Size: 356x368
Mass per Metre: 152.9 kg/m
Depth of Section (h): 362 mm
Width of Section (b): 370.5 mm
Web Thickness (tw): 12.3 mm
Flange Thickness (tf): 20.7 mm
Root Radius (r): 15.2 mm
Depth Between Fillets (d): 290.2 mm
Local Buckling Ratio d/tw: 23.6
Local Buckling Ratio cf/tf: 8.95
Second Moment of Area Ixx: 48,600 cm4
Second Moment of Area Iyy: 17,600 cm4
Elastic Modulus Zxx: 2,680 cm3
Elastic Modulus Zyy: 948 cm3
Plastic Modulus Sxx: 2,960 cm3
Plastic Modulus Syy: 1,430 cm3
Radius of Gyration rxx: 15.8 cm
Radius of Gyration ryy: 9.49 cm
Cross-Sectional Area: 195 cm2
Buckling Parameter (u): 0.844
Torsional Index (x): 17
Warping Constant (Iw): 5.11 dm6
Torsional Constant (It): 251 cm4
Surface Area per Metre: 2.16 m2/m
Surface Area per Tonne: 14.1 m2/t

356x368x129 UC

Designation: 356x368x129
Serial Size: 356x368
Mass per Metre: 129 kg/m
Depth of Section (h): 355.6 mm
Width of Section (b): 368.6 mm
Web Thickness (tw): 10.4 mm
Flange Thickness (tf): 17.5 mm
Root Radius (r): 15.2 mm
Depth Between Fillets (d): 290.2 mm
Local Buckling Ratio d/tw: 27.9
Local Buckling Ratio cf/tf: 10.5
Second Moment of Area Ixx: 40,200 cm4
Second Moment of Area Iyy: 14,600 cm4
Elastic Modulus Zxx: 2,260 cm3
Elastic Modulus Zyy: 793 cm3
Plastic Modulus Sxx: 2,480 cm3
Plastic Modulus Syy: 1,200 cm3
Radius of Gyration rxx: 15.6 cm
Radius of Gyration ryy: 9.43 cm
Cross-Sectional Area: 164 cm2
Buckling Parameter (u): 0.844
Torsional Index (x): 19.9
Warping Constant (Iw): 4.18 dm6
Torsional Constant (It): 153 cm4
Surface Area per Metre: 2.14 m2/m
Surface Area per Tonne: 16.6 m2/t

356x368 UC — Overview

The 356x368 serial size group contains 4 sections, ranging from 129 kg/m to 201.9 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.