Welded Columns WC

AS/NZS 3679.2

Three-plate welded H-sections for heavily loaded columns in multi-storey and industrial buildings. Dimensions, section properties, AS 4100 capacities and free DXF drawings for all 18 sizes.

Welded columns (WC) are heavy three-plate H-sections fabricated to AS/NZS 3679.2. They are used for heavily loaded columns in multi-storey buildings, transfer structures and industrial plant where a 310UC158 is insufficient.

Dimension notation

Select any section in the table to open its page, with a dimensioned drawing, all section properties, AS 4100 capacities and a free DXF download for your CAD software.

Click a column heading to sort. Grade 300 capacities.

Designation	Mass kg/m	d mm	b_f mm	t_f mm	t_w mm	A_g mm²	I_x 10⁶mm⁴	Z_x 10³mm³	S_x 10³mm³	I_y 10⁶mm⁴	r_y mm	J 10³mm⁴	φM_sx kNm	φN_s kN
500WC440	440.0	480	500	40	40	56000	2155	8978	10400	835	122.1	29867	2620.8	14112
500WC414	414.0	480	500	40	32	52800	2112	8800	10080	834	125.7	25702	2540.2	13306
500WC383	383.0	472	500	36	32	48800	1885	7989	9128	751	124.1	19921	2300.3	12298
500WC340	340.0	514	500	32	25	43250	2051	7981	8978	667	124.2	13266	2262.4	10899
500WC290	290.0	506	500	28	20	37000	1753	6929	7704	584	125.6	8517	1906.7	9324
500WC267	267.0	500	500	25	20	34000	1563	6253	6950	521	123.8	6408	1688.2	8568
500WC228	228.0	490	500	20	20	29000	1257	5131	5712	417	119.9	3867	1407.7	7830
400WC361	361.0	430	400	40	40	46000	1364	6344	7465	429	96.5	24533	1881.2	11592
400WC328	328.0	430	400	40	28	41800	1321	6145	7098	427	101.1	19628	1788.6	10534
400WC303	303.0	422	400	36	28	38600	1176	5573	6416	385	99.8	15003	1616.8	9727
400WC270	270.0	414	400	32	25	34350	1025	4954	5655	342	99.8	10561	1425.1	8656
400WC212	212.0	400	400	25	20	27000	776	3878	4363	267	99.4	5100	1098.5	6804
400WC181	181.0	390	400	20	20	23000	620	3177	3572	214	96.4	3067	921.8	6210
400WC144	144.0	382	400	16.0	16.0	18400	486	2545	2832	171	96.3	1570	698.2	4968
350WC280	280.0	355	350	40	28	35700	747	4208	4939	286	89.6	16946	1244.7	8996
350WC258	258.0	347	350	36	28	32900	661	3807	4448	258	88.5	12899	1120.9	8291
350WC230	230.0	339	350	32	25	29275	573	3381	3911	229	88.4	9078	985.6	7377
350WC197	197.0	331	350	28	20	25100	486	2935	3348	200	89.3	5855	843.6	6325

All WC DXFs (.zip) Table as CSV Compare sections

Relevant Australian Standards

AS/NZS 3679.2:2016 Structural steel – Part 2: Welded I sections
Covers three-plate welded beams (WB) and columns (WC) fabricated from AS/NZS 3678 plate, including weld requirements and dimensional tolerances.
AS/NZS 3678:2016 Structural steel – Hot-rolled plates, floorplates and slabs
Specifies the hot-rolled plate (Grades 250, 300, 350, 400 and others) used for welded sections, base plates, stiffeners and fabricated components.
AS 4100:2020 Steel structures
The Australian design Standard for steel members and connections. Covers section classification (Section 5), member moment capacity including lateral-torsional buckling (5.6), shear (5.11), axial compression (Section 6), tension (Section 7) and combined actions (Section 8).
AS/NZS 1554.1:2014 Structural steel welding – Welding of steel structures
Weld procedures, welder qualification, weld categories (SP and GP) and inspection requirements for structural welds.
AS/NZS 5131:2016 Structural steelwork – Fabrication and erection
Fabrication, erection, tolerances, inspection and construction categories (CC1–CC4) for structural steelwork.

See all Australian Standards for structural steel.