British Universal Columns and Beams

Properties of British Universal Steel Columns and Beams according to BS 4 standard. Calculate and lookup sectional properties including moment of inertia, elastic section modulus, cross-sectional area, weight, and dimensional parameters for various UB and UC designations.

Designation	Depth (mm)	Width (mm)	Web Thickness (mm)	Sectional Area (cm²)	Weight (kg/m)	Ix (cm⁴)	Iy (cm⁴)	Wx (cm³)	Wy (cm³)
UB 127 x 76 x 13	127	76	4	16.5	13	473	55.7	74.5	14.7
UB 152 x 89 x 16	152.4	88.7	4.5	20.3	16	834	89.6	109.5	20.2
UB 178×102 x 19	177.8	101.2	4.8	24.3	19	1356	137	152.5	27
UB 203×102 x 23	203.2	101.8	5.4	29.4	23.1	2105	163.9	207.2	32.2
UB 203 x 133 x 25	203.2	133.2	5.7	32	25.1	2340	307.6	230.3	46.2
UB 203 x 133 x 30	206.8	133.9	6.4	38.2	30	2896	384.7	280	57.5
UB 254×102 x 22	254	101.6	5.7	28	22	2841	119.3	223.7	23.5
UB 254×102 x 25	257.2	101.9	6	32	25.2	3415	148.7	265.5	29.2
UB 254×102 x 28	260.4	102.2	6.3	36.1	28.3	4005	178.5	307.6	34.9
UB 254 x 146 x 31	251.4	146.1	6	39.7	31.1	4413	447.5	351.1	61.3
UB 254 x 146 x 37	256	146.4	6.3	47.2	37	5537	570.6	432.6	78
UB 254 x 146 x 43	259.6	147.3	7.2	54.8	43	6544	677.4	504.1	92
UB 305×102 x 25	305.1	101.6	5.8	31.6	24.8	4455	122.9	292.1	24.2
UB 305×102 x 28	308.7	101.8	6	35.9	28.2	5366	155.4	347.6	30.5
UB 305×102 x 33	312.7	102.4	6.6	41.8	32.8	6501	194.1	415.8	37.9
UB 305 x 127 x 37	304.4	123.4	7.1	47.2	37	7171	336.2	471.1	54.5
UB 305 x 127 x 42	307.2	124.3	8	53.4	41.9	8196	388.8	533.6	62.6
UB 305 x 127 x 48	311	125.3	9	61.2	48.1	9575	461	615.7	73.6
UB 305 x 165 x 40	303.4	165	6	51.3	40.3	8503	764.4	560.5	92.6
UB 305 x 165 x 46	306.6	165.7	6.7	58.8	46.1	9899	895.7	645.7	108.1
UB 305 x 165 x 54	310.4	166.9	7.9	68.8	54	11700	1063	753.6	127.4
UB 356 x 127 x 33	349	125.4	6	42.1	33.1	8249	280.2	472.7	44.7
UB 356 x 127 x 39	353.4	126	6.6	49.8	39.1	10172	357.8	575.6	56.8
UB 356 x 171 x 45	351.4	171.1	7	57.3	45	12070	811.1	686.7	94.8
UB 356 x 171 x 51	355	171.5	7.4	64.9	51	14140	968.3	796.4	112.9
UB 356 x 171 x 57	358	172.2	8.1	72.6	57	16040	1108	896	128.7
UB 356 x 171 x 67	363.4	173.2	9.1	85.5	67.1	19460	1362	1071	157.3
UB 406 x 140 x 39	398	141.8	6.4	49.7	39	12508	409.8	628.6	57.8
UB 406 x 140 x 46	403.2	142.2	6.8	58.6	46	15685	538.1	778	75.6
UB 406 x 178 x 54	402.6	177.7	7.7	69	54.1	18720	1021	930	114.9
UB 406 x 178 x 60	406.4	177.9	7.9	76.5	60.1	21600	1203	1063	135.3
UB 406 x 178 x 67	409.4	178.8	8.8	85.5	67.1	24330	1365	1189	152.7
UB 406 x 178 x 74	412.8	179.5	9.5	94.5	74.2	27310	1545	1323	172.2
UB 457 x 152 x 52	449.8	152.4	7.6	66.6	52.3	21370	645	950	84.6
UB 457 x 152 x 60	454.6	152.9	8.1	76.2	59.8	25500	794.6	1122	103.9
UB 457 x 152 x 67	458	153.8	9	85.6	67.2	28930	912.6	1263	118.7
UB 457 x 152 x 74	462	154.4	9.6	94.5	74.2	32670	1047	1414	135.6
UB 457 x 152 x 82	465.8	155.3	10.5	104.5	82.1	36590	1185	1571	152.5
UB 457 x 191 x 67	453.4	189.9	8.5	85.5	67.1	29380	1452	1296	152.9
UB 457 x 191 x 74	457	190.4	9	94.6	74.3	33320	1671	1458	175.5
UB 457 x 191 x 82	460	191.3	9.9	104.5	82	37050	1871	1611	195.6
UB 457 x 191 x 89	463.4	191.9	10.5	113.8	89.3	41020	2089	1770	217.8
UB 457 x 191 x 98	467.2	192.8	11.4	125.3	98.3	45730	2347	1957	243.5
UB 533 x 210 x 82	528.3	208.8	9.6	104.7	82.2	47540	2007	1800	192.3
UB 533 x 210 x 92	533.1	209.3	10.1	117.4	92.1	55230	2389	2072	228.3
UB 533 x 210×101	536.7	210	10.8	128.7	101	61520	2692	2292	256.4
UB 533 x 210×109	539.5	210.8	11.6	138.9	109	66820	2943	2477	279.2
UB 533 x 210 x 122	544.5	211.9	12.7	155.4	122	76040	3388	2793	319.7
UB 610 x 229×101	602.6	227.6	10.5	128.9	101.2	45780	2915	2515	256.1
UB 610 x 229 x 113	607.6	228.2	11.1	143.9	113	87320	3434	2874	301
UB 610 x 229 x 125	612.2	229	11.9	159.3	125.1	98610	3932	3221	343.4
UB 610 x 229 x 140	617.2	230.2	13.1	178.2	139.9	111800	4505	3622	391.4
UB 610 x 305 x 149	612.4	304.8	11.8	190	149.1	125900	9308	4111	611
UB 610 x 305 x 179	620.2	307.1	14.1	228.1	179	153000	11408	4935	743
UB 610 x 305 x 238	635.8	311.4	18.4	303.3	238.1	209500	15837	6589	1017

Properties Reference

Moment of Inertia (I): Resistance to bending, measured in cm⁴

Ix: About major (horizontal) axis
Iy: About minor (vertical) axis

Elastic Section Modulus (W): Stress distribution under load, measured in cm³

Wx: About major axis
Wy: About minor axis

Sectional Area: Cross-sectional area in cm²

Weight: Per meter of beam length in kg/m

Conversion Factors:

1 cm⁴ = 10⁴ mm⁴ = 10⁻⁸ m⁴ = 0.024 in⁴
1 cm³ = 10³ mm³ = 10⁻⁶ m³ = 0.061 in³
1 cm² = 10² mm² = 10⁻⁴ m² = 0.16 in²
1 kg/m = 0.67 lb/ft