Universal Joists (UJ) - Section Properties Table

Dimensions and section properties for all 13 Universal Joists (UJ) to BS 4-1 (SCI P363 Blue Book): dimensions, mass and section properties for every UJ size. Use the table below for reference, or open the interactive tool to run EC3 capacity checks.

🔍 Open the full Steel Catalogue - properties, capacity & Find Section →Open the interactive UJ tool - EC3 capacity checks →📖 Design theory 📐 Worked example

Designation	mass kg/m	h mm	b mm	t_w mm	t_f mm	I_y cm⁴	I_z cm⁴	i_y cm	i_z cm	W_el,y cm³	W_el,z cm³	W_pl,y cm³	W_pl,z cm³	u	X	I_w dm⁶	I_t cm⁴	A cm²	SA/m m²/m	SA/t m²/t
UJ 254×203×82	82	254	203.2	10.2	19.9	12000	2280	10.7	4.67	947	224	1080	371	0.888	11	0.312	152	105	1.21	14.8
UJ 254×114×37	37.2	254	114.3	7.6	12.8	5080	269	10.4	2.39	400	47.1	459	79.1	0.884	18.7	0.0392	25.2	47.3	0.899	24.2
UJ 203×152×52	52.3	203.2	152.4	8.9	16.5	4800	816	8.49	3.5	472	107	541	176	0.89	10.7	0.0711	64.8	66.6	0.932	17.8
UJ 152×127×37	37.3	152.4	127	10.4	13.2	1820	378	6.19	2.82	239	59.6	279	99.8	0.867	9.3	0.0183	33.9	47.5	0.737	19.8
UJ 127×114×29	29.3	127	114.3	10.2	11.5	979	242	5.12	2.54	154	42.3	181	70.8	0.853	8.8	0.00807	20.8	37.4	0.646	22
UJ 127×114×27	26.9	127	114.3	7.4	11.4	946	236	5.26	2.63	149	41.3	172	68.2	0.868	9.3	0.00788	16.9	34.2	0.65	24.2
UJ 127×76×16	16.5	127	76.2	5.6	9.6	571	60.8	5.21	1.7	90	16	104	26.4	0.89	11.8	0.0021	6.72	21.1	0.512	31
UJ 114×114×27	27.1	114.3	114.3	9.5	10.7	736	224	4.62	2.55	129	39.2	151	65.8	0.839	7.9	0.00601	18.9	34.5	0.618	22.8
UJ 102×102×23	23	101.6	101.6	9.5	10.3	486	154	4.07	2.29	95.6	30.3	113	50.6	0.836	7.4	0.00321	14.2	29.3	0.549	23.9
UJ 102×44×7	7.5	101.6	44.5	4.3	6.1	153	7.82	4.01	0.907	30.1	3.51	35.4	6.03	0.872	14.9	0.000178	1.25	9.5	0.35	46.6
UJ 89×89×19	19.5	88.9	88.9	9.5	9.9	307	101	3.51	2.02	69	22.8	82.7	38	0.829	6.6	0.00158	11.5	24.9	0.476	24.4
UJ 76×76×15	15	76.2	80	8.9	8.4	172	60.9	3	1.78	45.2	15.2	54.2	25.8	0.82	6.4	0.0007	6.83	19.1	0.419	27.9
UJ 76×76×13	12.8	76.2	76.2	5.1	8.4	158	51.8	3.12	1.79	41.5	13.6	48.7	22.4	0.853	7.2	0.000595	4.59	16.2	0.411	32.1

13 sections · source: BS 4-1:2005

Related section types

Universal Beams (UB)

96 sections · BS EN 10365:2017

Universal Columns (UC)

36 sections · BS EN 10365:2017

Universal Bearing Piles (UBP)

17 sections · BS EN 10365:2017

Learn more

📘 How to read a steel section table (UB, UC, IPE, HE) →📘 Section modulus explained: elastic (Wel) vs plastic (Wpl) →📘 IPE vs HE (HEA/HEB): choosing a European steel beam →

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