Universal beams (UB)

British I beams for bending · 81 sizes · ASTM A6/A6M-07, BS 4-1:2005

Universal beams to BS 4-1:2005 are the British I beams with parallel flanges, designated by nominal depth, nominal width and mass per metre (203 x 133 x 25 UB). Depth is much greater than width, which makes them efficient in bending.

The table lists the dimensions, mass and area of every size. Tap a designation for its drawing and detailed dimensions. All values are in millimetres, kilograms per metre and square centimetres.

Dimensions and weights

Designation	h mm	b mm	t_w mm	t_f mm	r₁ mm	G kg/m	A cm²
UB 127 x 76 x 13	127	76	4	7.6	7.6	13	16.52
UB 152 x 89 x 16	152.4	88.7	4.5	7.7	7.6	16	20.32
UB 178 x 102 x 19	177.8	101.2	4.8	7.9	7.6	19	24.26
UB 203 x 102 x 23	203.2	101.8	5.4	9.3	7.6	23.1	29.4
UB 203 x 133 x 25	203.2	133.2	5.7	7.8	7.6	25.1	31.97
UB 203 x 133 x 30	206.8	133.9	6.4	9.6	7.6	30	38.21
UB 254 x 102 x 22	254	101.6	5.7	6.8	7.6	22	28.02
UB 254 x 102 x 25	257.2	101.9	6	8.4	7.6	25.2	32.04
UB 254 x 102 x 28	260.4	102.2	6.3	10	7.6	28.3	36.08
UB 254 x 146 x 31	251.4	146.1	6	8.6	7.6	31.1	39.68
UB 254 x 146 x 37	256	146.4	6.3	10.9	7.6	37	47.17
UB 254 x 146 x 43	259.6	147.3	7.2	12.7	7.6	43	54.77
UB 305 x 102 x 25	305.1	101.6	5.8	7	7.6	24.8	31.6
UB 305 x 102 x 28	308.7	101.8	6	8.8	7.6	28.2	35.88
UB 305 x 102 x 33	312.7	102.4	6.6	10.8	7.6	32.8	41.83
UB 305 x 127 x 37	304.4	123.4	7.1	10.7	8.9	37	47.18
UB 305 x 127 x 42	307.2	124.3	8	12.1	8.9	41.9	53.4
UB 305 x 127 x 48	311	125.3	9	14	8.9	48.1	61.23
UB 305 x 165 x 40	303.4	165	6	10.2	8.9	40.3	51.32
UB 305 x 165 x 46	306.6	165.7	6.7	11.8	8.9	46.1	58.75
UB 305 x 165 x 54	310.4	166.9	7.9	13.7	8.9	54	68.77
UB 356 x 127 x 33	349	125.4	6	8.5	10.2	33.1	42.13
UB 356 x 127 x 39	353.4	126	6.6	10.7	10.2	39.1	49.77
UB 356 x 171 x 45	351.4	171.1	7	9.7	10.2	45	57.33
UB 356 x 171 x 51	355	171.5	7.4	11.5	10.2	51	64.91
UB 356 x 171 x 57	358	172.2	8.1	13	10.2	57	72.56
UB 356 x 171 x 67	363.4	173.2	9.1	15.7	10.2	67.1	85.49
UB 406 x 140 x 39	398	141.8	6.4	8.6	10.2	39	49.65
UB 406 x 140 x 46	403.2	142.2	6.8	11.2	10.2	46	58.64
UB 406 x 178 x 54	402.6	177.7	7.7	10.9	10.2	54.1	68.95
UB 406 x 178 x 60	406.4	177.9	7.9	12.8	10.2	60.1	76.52
UB 406 x 178 x 67	409.4	178.8	8.8	14.3	10.2	67.1	85.54
UB 406 x 178 x 74	412.8	179.5	9.5	16	10.2	74.2	94.51
UB 457 x 152 x 52	449.8	152.4	7.6	10.9	10.2	52.3	66.64
UB 457 x 152 x 60	454.6	152.9	8.1	13.3	10.2	59.8	76.23
UB 457 x 152 x 67	458	153.8	9	15	10.2	67.2	85.55
UB 457 x 152 x 74	462	154.4	9.6	17	10.2	74.2	94.48
UB 457 x 152 x 82	465.8	155.3	10.5	18.9	10.2	82.1	104.5
UB 457 x 191 x 67	453.4	189.9	8.5	12.7	10.2	67.1	85.51
UB 457 x 191 x 74	457	190.4	9	14.5	10.2	74.3	94.63
UB 457 x 191 x 82	460	191.3	9.9	16	10.2	82	104.5
UB 457 x 191 x 89	463.4	191.9	10.5	17.7	10.2	89.3	113.8
UB 457 x 191 x 98	467.2	192.8	11.4	19.6	10.2	98.3	125.3
UB 533 x 210 x 82	528.3	208.8	9.6	13.2	12.7	82.2	104.7
UB 533 x 210 x 92	533.1	209.3	10.1	15.6	12.7	92.1	117.4
UB 533 x 210 x 101	536.7	210	10.8	17.4	12.7	101	128.7
UB 533 x 210 x 109	539.5	210.8	11.6	18.8	12.7	109	138.9
UB 533 x 210 x 122	544.5	211.9	12.7	21.3	12.7	122	155.4
UB 610 x 229 x 101	602.6	227.6	10.5	14.8	12.7	101.2	128.9
UB 610 x 229 x 113	607.6	228.2	11.1	17.3	12.7	113	143.9
UB 610 x 229 x 125	612.2	229	11.9	19.6	12.7	125.1	159.3
UB 610 x 229 x 140	617.2	230.2	13.1	22.1	12.7	139.9	178.2
UB 610 x 305 x 149	612.4	304.8	11.8	19.7	16.5	149.1	190
UB 610 x 305 x 179	620.2	307.1	14.1	23.6	16.5	179	228.1
UB 610 x 305 x 238	635.8	311.4	18.4	31.4	16.5	238.1	303.3
UB 686 x 254 x 125	677.9	253	11.7	16.2	15.2	125.2	159.5
UB 686 x 254 x 140	683.5	253.7	12.4	19	15.2	140.1	178.4
UB 686 x 254 x 152	687.5	254.5	13.2	21	15.2	152.4	194.1
UB 686 x 254 x 170	692.9	255.8	14.5	23.7	15.2	170.2	216.8
UB 762 x 267 x 147	754	265.2	12.8	17.5	16.5	146.9	187.2
UB 762 x 267 x 173	762.2	266.7	14.3	21.6	16.5	173	220.4
UB 762 x 267 x 197	769.8	268	15.6	25.4	16.5	196.8	250.6
UB 838 x 292 x 176	834.9	291.7	14	18.8	17.8	175.9	224
UB 838 x 292 x 194	840.7	292.4	14.7	21.7	17.8	193.8	246.8
UB 838 x 292 x 226	850.9	293.8	16.1	26.8	17.8	226.5	288.6
UB 914 x 305 x 201	903	303.3	15.1	20.2	19.1	200.9	255.9
UB 914 x 305 x 224	910.4	304.1	15.9	23.9	19.1	224.2	285.6
UB 914 x 305 x 253	918.4	305.5	17.3	27.9	19.1	253.4	322.8
UB 914 x 305 x 289	926.6	307.7	19.5	32	19.1	289.1	368.3
UB 914 x 419 x 343	911.8	418.5	19.4	32	24.1	343.3	437.3
UB 914 x 419 x 388	921	420.5	21.4	36.6	24.1	388	494.2
UB 1016 x 305 x 222	970	300	16	21.1	30	222	282.8
UB 1016 x 305 x 249	980	300	16.5	26	30	249	316.8
UB 1016 x 305 x 272	990	300	16.5	31	30	272	346.8
UB 1016 x 305 x 314	1,000	300	19.1	35.9	30	314	400.4
UB 1016 x 305 x 350	1,008	302	21.1	40	30	350	445.1
UB 1016 x 305 x 393	1,016	303	24.4	43.9	30	393	500.2
UB 1016 x 305 x 415	1,020	304	26	46	30	415	528.7
UB 1016 x 305 x 438	1,026	305	26.9	49	30	438	556.3
UB 1016 x 305 x 494	1,036	309	31	54	30	494	629.1
UB 1016 x 305 x 584	1,056	314	36	64	30	584	743.7

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Other British series

Universal columns (UC)Universal bearing piles (UBP)Joists (RSJ)Parallel flange channels (PFC)Channels (BS 4-1:1993)Equal angles Unequal angles Tees cut from universal beams Tees cut from universal columns