Rectangular Hollow Section

Sectional Size hxb mm	Designation Thickness t mm	Mass per Metre kg/m	Area of Section A cm2	Ratio for Local Buckling cw/t	Ratio for Local Buckling cf/t	Second Moment of Area y-y Iy cm4	Second Moment of Area x-x Iz cm4	Radius of Gyration y-y iy cm	Radius of Gyration x-x iz cm	Elastic Modulus y-y W ely cm3	Elastic Modulus x-x W elz cm3	Plastic Modulus y-y W ply cm3	Plastic Modulus x-x W plz cm3	Torsional Constants I T cm4	Torsional Constants W t cm3	Surface Area Per Metre m2	Surface Area Per Tonne m2
120x60	5	12.8	16.4	21	9	287	96	4.19	2.42	47.8	32	60.9	37.4	242	55.8	0.343	26.7
120x60	6	15.1	19.2	17	7	328	109	4.13	2.38	54.7	36.3	70.6	43.1	280	63.6	0.339	22.4
120x80	5	14.4	18.4	21	13	353	188	4.39	3.2	58.9	46.9	72.4	54.7	402	77.8	0.383	26.6
120x80	6	17	21.6	17	10.3	406	215	4.33	3.15	67.7	53.8	84.3	63.5	469	89.4	0.379	22.3
120x80	8	21.4	27.2	12	7	476	252	4.18	3.04	79.3	62.9	102	76.9	584	108	0.366	17.1
150x100	5	18.3	23.4	27	17	719	384	5.55	4.05	95.9	76.8	117	88.3	809	127	0.483	26.3
150x100	6	21.7	27.6	22	13.7	835	444	5.5	4.01	111	88.8	137	103	948	147	0.479	22.1
150x100	8	27.7	35.2	15.8	9.5	1010	536	5.35	3.9	134	107	169	128	1210	182	0.466	16.8
150x100	10	33.4	42.6	12	7	1160	614	5.22	3.8	155	123	199	150	1430	211	0.457	13.7
160x80	5	17.5	22.4	29	13	722	244	5.68	3.3	90.2	61	113	69.7	601	106	0.463	26.4
160x80	6	20.7	26.4	23.7	10.3	836	281	5.62	3.26	105	70.2	132	81.3	702	122	0.459	22.1
160x80	8	26.4	33.6	17	7	1000	335	5.46	3.16	125	83.7	163	100	882	150	0.446	16.9
160x80	10	31.8	40.6	13	5	1150	380	5.32	3.06	143	95	191	117	1030	172	0.437	13.7
200x100	5	22.3	28.4	37	17	1460	497	7.17	4.19	146	99.4	181	112	1210	172	0.583	26.2
200x100	6	26.4	33.6	30.3	13.7	1700	577	7.12	4.14	170	115	213	132	1420	200	0.579	21.9
200x100	8	33.9	43.2	22	9.5	2090	705	6.95	4.04	209	141	267	165	1810	250	0.566	16.7
200x100	10	41.3	52.6	17	7	2440	818	6.82	3.94	244	164	318	195	2150	292	0.557	13.5
200x100	12.5	48.7	62			2659	892	6.55	3.79	266	178	359	221	2474	329	536
200x120	6	28.3	36	30.3	17	1930	874	7.32	4.93	193	146	237	166	1950	245	0.619	21.9
200x120	8	36.5	46.4	22	12	2390	1080	7.17	4.82	239	180	298	209	2510	308	0.606	16.6
200x120	10	44.4	56.6	17	9	2810	1260	7.04	4.72	281	210	356	250	3010	364	0.597	13.4
200x150	5	26.2	33.4	37	27	1940	1250	7.62	6.11	193	166	230	189	2390	267	0.683	26.1
200x150	6	31.1	39.6	30.3	22	2270	1460	7.56	6.06	227	194	271	223	2830	313	0.679	21.8
200x150	8	40.2	51.2	22	15.8	2830	1820	7.43	5.95	283	242	344	283	3670	396	0.666	16.6
200x150	10	49.1	62.6	17	12	3350	2140	7.31	5.85	335	286	413	339	4430	471	0.657	13.4
250x150	5	30.1	38.4	47	27	3300	1510	9.28	6.27	264	201	320	225	3290	337	0.783	26
250x150	6	35.8	45.6	38.7	22	3890	1770	9.23	6.23	311	236	378	266	3890	396	0.779	21.7
250x150	8	46.5	59.2	28.3	15.8	4890	2220	9.08	6.12	391	296	482	340	5050	504	0.766	16.5
250x150	10	57	72.6	22	12	5830	2630	8.96	6.02	466	351	582	409	6120	602	0.757	13.3

Sectional Size hxb mm	Designation Thickness t mm	Mass per Metre kg/m	Area of Section A cm2	Ratio for Local Buckling cw/t	Ratio for Local Buckling cf/t	Second Moment of Area y-y Iy cm4	Second Moment of Area x-x Iz cm4	Radius of Gyration y-y iy cm	Radius of Gyration x-x iz cm	Elastic Modulus y-y W ely cm3	Elastic Modulus x-x W elz cm3	Plastic Modulus y-y W ply cm3	Plastic Modulus x-x W plz cm3	Torsional Constants I T cm4	Torsional Constants W t cm3	Surface Area Per Metre m2	Surface Area Per Tonne m2
250x150	12.5	68.3	87	17	9	6630	3000	8.73	5.87	531	400	678	477	7320	704	0.736	10.7
300x100	8	46.5	59.2	34.5	9.5	5980	1050	10	4.2	399	209	523	238	3080	385	0.766	16.5
300x100	10	57	72.6	27	7	7110	1220	9.9	4.11	474	245	631	285	3680	455	0.757	13.3
300x200	6	45.2	57.6	47	30.3	7370	3960	11.3	8.29	491	396	588	446	8120	651	0.979	21.6
300x200	6.3	47.1	60	44.6	28.7	7620	4100	11.3	8.27	508	410	610	463	8520	680	0.973	20.6
300x200	8	59.1	75.2	34.5	22	9390	5040	11.2	8.19	626	504	757	574	10600	838	0.966	16.3
300x200	10	72.7	92.6	27	17	11300	6060	11.1	8.09	754	606	921	698	13000	1010	0.957	13.2
300x200	12	84.8	108	22	13.7	12800	6850	10.9	7.96	853	685	1060	801	15200	1170	0.938	11.1
300x200	12.5	88	112	21	13	13200	7060	10.8	7.94	879	706	1090	828	15800	1200	0.936	10.7
400x200	8	71.6	91.2	47	22	19000	6520	14.4	8.45	949	652	1170	728	15800	1130	1.17	16.4
400x200	10	88.4	113	37	17	23000	7860	14.3	8.36	1150	786	1430	888	19400	1370	1.16	13.1
400x200	12.5	108	137	29	13	27100	9260	14.1	8.22	1360	926	1710	1060	23600	1640	1.14	10.6