EICAC logoEngineering Information, Conversions and Calculations

Steel RHS Dimensions

RHS (Rectangular Hollow Section) is a cold-formed or hot-finished structural steel tube with an unequal-sided rectangular cross-section, chosen where bending load is predominantly in one direction — the deeper dimension gives significantly more bending stiffness and strength about its strong axis than an SHS of similar mass, at the cost of reduced stiffness about the weaker axis. The chart below gives dimensional and section property information for standard RHS sizes to BS EN 10219:1997.

For an equal-sided square equivalent, see our Steel SHS chart; for a round section, see Steel CHS.

The charts below gives the dimensions for Cold Formed Steel Rectangular Hollow Section to BS EN10219:1997 and Hot Formed Steel Rectangular Hollow Section to BS EN10210-2:1997

Dimensions shown are in mm, if you wish to convert to Inches, please use our universal converter.

If you are interested in different sections why not try these?

STEEL RECTANGULAR HOLLOW SECTION - COLD FORMED - BS EN10219:1997

Rectangular Hollow Section Sizes and Properties
SizeThicknessCorner RadiusMass/mArea of
Section
Second Moment
of Area
Radius Of
Gyration
Torsional ConstantsSection
Surface
Area
BACExternal
E
Internal
D
MAAxis x-x
Ix
Axis y-y
Iy
Axis x-x
rx
Axis y-y
ry
Inertia
J
Modulus
C
As
mmmmmmmmmmkg/mcm²cm⁴cm⁴cmcmcm⁴cm³m²/m
40202421.6782.1374.051.3431.3770.7933.4242.7050.12
40202.552.52.0322.5894.6941.5371.3470.774.0073.2210.12
40203632.3613.0085.2081.6851.3160.7484.4773.670.12
50252422.1492.7378.3842.8091.751.0137.0264.3850.15
50252.552.52.6213.3399.8873.2781.7210.9918.365.2830.15
50302422.3062.9379.5364.2931.8021.2099.7285.3450.16
50302.552.52.8173.58911.35.0521.7741.18611.76.4710.16
50303633.3034.20812.85.71.7461.16413.47.510.16
50304844.1985.34815.36.6931.6891.11916.29.3210.16
60402422.9343.73718.49.8312.221.62220.78.7850.2
60402.552.53.6024.58922.111.72.1931.5992510.70.2
60403634.2455.40825.413.42.1661.57629.112.50.2
70502423.5624.53731.518.82.6342.03337.4130.24
70502.552.54.3875.5893822.62.6082.0145.6160.24
70503635.1876.60844.126.12.5821.98753.418.80.24
70504846.718.54854.732.22.5291.94267.6240.24
80402423.5624.53737.412.72.8691.67530.811.80.24
80402.552.54.3875.58945.115.32.8411.65237.514.50.24
80403635.1876.60852.317.62.8121.6343.7170.24
80404846.718.54864.821.52.7531.58554.821.60.24
804051058.1310.35675.124.62.6931.54164.125.80.24
80602424.195.33749.531.93.0462.44461.118.10.28
80602.552.55.1726.58960.138.63.0212.42174.922.20.28
80603636.1297.8087044.92.9952.39888.126.20.28
80604847.96610.14887.956.12.9432.352112.633.80.28
806051059.712.356103.365.72.8912.305134.540.80.28
90502424.195.33757.923.43.2932.09253.316.90.28
90502.552.55.1726.58970.328.23.2662.0765.220.70.28
90503636.1297.80881.932.73.2382.04876.424.40.28
90503.67.23.67.2449.22894.737.73.2042.02189.228.70.28
90504847.96610.148102.740.73.1812.00397.231.40.28
100402.552.55.1726.58979.318.83.471.68850.418.20.28
100403636.1297.80892.321.73.4391.66658.821.40.28
100404847.96610.148115.726.73.3771.6227427.40.28
100502424.5045.7377525.73.6152.11561.518.80.3
100502.552.55.5657.08991.231.13.5872.09375.223.10.3
100503636.68.408106.536.13.5582.07188.327.20.3
10050612612.27215.633178.858.73.3811.937152.348.80.3
100603637.0719.008120.654.63.6592.463121.433.10.32
100603.67.23.68.37410.668140.263.33.6262.436142.3390.32
100604849.22211.748152.668.73.6042.418155.642.80.32
10060510511.2714.356180.880.83.5482.373186.751.80.32
10060612613.21416.833205.391.23.4922.328214.460.10.32
100606.315.759.4513.5117.21203.490.93.4382.298221.161.70.32
100802.552.56.7428.589126.990.23.8433.24165.737.70.36
100803638.01310.208148.8105.63.8183.217195.844.70.36
1008048410.47813.348189.5134.23.7683.17253.158.10.36
10080510512.8416.356225.9159.63.7173.124306.270.80.36
10080612615.09819.233258.4182.13.6653.077355.182.60.36
120602.552.56.7428.589161.255.24.3332.534132.433.70.36
120603638.01310.208189.164.44.3042.51215639.90.36
120603.67.23.69.50512.108220.774.84.272.485183.147.10.36
1206048410.47813.348240.781.24.2472.467200.451.70.36
12060510512.8416.356287964.1892.423240.962.80.36
12060612615.09819.233328108.84.132.378277.4730.36
120803638.95511.408230.2123.44.4923.289255.153.90.4
1208048411.73414.948294.6157.34.4393.244330.470.30.4
12080510514.4118.356353.1187.84.3863.198400.785.80.4
12080612616.98221.633406.12154.3323.153465.9100.40.4
120806.315.759.4517.46622.25408.5217.14.2853.124484.9103.90.4
120808201221.38527.242475.8251.74.1793.039578.2125.50.4
1408048412.9916.548429.6180.45.0953.302410.782.40.44
14080510515.9820.356517.1215.95.043.257498.8100.80.44
14080612618.86624.0335972484.9843.212580.9118.20.44
140806.315.759.4519.44424.77602.7251.44.9333.186605.2122.40.44
140808201223.89730.442708.1293.34.8233.104724.9148.50.44
15010048414.87418.948594.6318.65.6024.1660.6111.90.5
150100510518.33523.356719.23845.5494.055806.7137.30.5
150100612621.69227.633834.7444.25.4964.009945161.60.5
1501006.315.759.4522.41128.55848.3452.75.4513.982987.9167.90.5
1501008201227.66535.2421008.1535.75.3483.8991198.4205.50.5
15010010251533.41542.5661161.7614.45.2243.7991411.7245.10.5
15010012362437.72748.0591207641.85.0113.6541549.8272.90.5
15010012.537.52538.89249.5441225651.34.9723.6261580.5279.80.5
1608048414.24618.148597.7203.55.7393.349493.194.60.48
16080510517.5522.356721.7244.15.6823.304599.5115.80.48
16080612620.7526.433836280.95.6243.26698.9135.90.48
160806.315.759.4521.42227.29846.5285.75.5693.236728.61410.48
160808201226.40933.6421001.2334.95.4553.155875.2171.60.48
1608010251531.84540.5661146.3379.85.3163.061017.2203.10.48
1608012.537.52536.92947.0441184.6395.85.0182.91104.5227.90.48
18010048416.75821.348926373.96.5864.185852.7134.90.56
180100510520.6926.3561124.2451.86.5314.141042.6165.80.56
180100612624.51831.2331309.6523.86.4754.0951222.9195.40.56
1801006.315.759.4525.37932.331335535.86.4264.0711279.1203.40.56
1801008201231.43340.0421598.5637.56.3183.991556.7249.70.56
18010010251538.12548.5661859.5736.46.1883.8941842.4299.10.56
18010012362443.37955.2591965.1782.15.9633.7622046.4336.30.56
18010012.537.52544.77957.0442001795.85.9233.7352092345.40.56
20010048418.01422.9481199.7410.87.234.231984.2150.30.6
200100510522.2628.3561459.3496.97.1744.1861203.9184.80.6
200100612626.40233.6331703.3576.97.1164.14214132180.6
2001006.315.759.4527.35734.851739.2591.17.0644.1191478.22270.6
2001008201233.94543.2422090.8705.46.9544.0391801.5279.10.6
20010010251541.26552.5662444.4817.76.8193.9442136.6335.10.6
20010012362447.14760.0592606.7875.66.5883.8182385.5378.50.6
20010012.537.52548.70462.0442658.9892.26.5463.7922441.4389.20.6
20012048419.2724.5481353.4617.77.4255.0161344181.60.64
200120510523.8330.3561649.4750.17.3714.9711649.5223.80.64
200120612628.28636.0331929.2874.37.3174.9261942.4264.60.64
2001206.315.759.4529.33537.371975.7897.77.2714.9012035.2275.80.64
2001208201236.45746.4422385.910797.1684.822497.1340.50.64
20012010251544.40556.5662805.71262.17.0434.7242988.2411.10.64
20012012362450.91564.8593031.41367.96.8374.5923387.8468.80.64
20012012.537.52552.62967.04430991397.46.7994.5653478.9482.90.64
250100510526.18533.3562553.8609.98.754.2761617.3232.30.7
250100612631.11239.6332992.3709.68.6894.2311899.8274.40.7
2501006.315.759.4532.30241.153065.8729.68.6324.2111987.82860.7
2501008201240.22551.2423714.1875.18.5144.1322427.7352.70.7
25010010251549.11562.5664384.21021.18.3714.042888.7425.10.7
25010012.537.52558.51774.5444868.311338.0813.8993334.6498.60.7
250150510530.1138.3563304.215089.2816.273281.3354.80.8
250150612635.82245.6333885.61768.39.2286.2253880.3420.80.8
2501506.315.759.4537.24847.454001.41824.69.1836.2014071.4439.50.8
2501508201246.50559.2424885.82219.29.0816.125037.8546.30.8
25015010251556.96572.56658252634.28.9596.0256096.5665.10.8
25015012362465.98784.0596457.92925.38.7655.8997048.1769.70.8
25015012.537.52568.32987.0446632.73002.38.7295.8737269.2795.40.8
260180510533.2542.3564121.42349.59.8647.4484691.4445.80.88
2601806.315.759.4541.20452.495012.72856.39.7727.3775837.4553.50.88
2601808201251.52965.6426145.23493.29.6767.2957252.76900.88
26018010251563.24580.5667363.34174.19.567.1988823.4843.10.88
26018012362473.52393.65982454679.29.3837.06810283.4981.40.88
26018012.537.52576.17997.0448482.54811.99.3497.04210625.51015.40.88
300100612635.82245.6334776.8842.410.2314.2962398330.80.8
3001006.315.759.4537.24847.454906.8868.110.1694.2772508.93450.8
30010010251556.96572.56671061224.49.8964.1083656.8515.10.8
30010012362465.98784.0597808.31343.19.6383.9974137.1589.70.8
300150612640.53251.6336073.52079.610.8466.3464982.3507.20.9
3001506.315.759.4542.19353.756265.6215010.7976.3255227.3530.10.9
3001508201252.78567.2427683.6262310.696.2466476.2659.90.9
30015010251564.81582.5669209.4312510.5616.1527851.1805.10.9
30015012362475.40796.05910298.13498.110.3546.0359107935.30.9
30015012.537.52578.14299.54410594.23594.810.3166.0099400.1967.30.9
30015016483296.376122.772123874174.410.0455.83111223.21173.80.9
300200612645.24257.6337370.23962.211.3098.2918108.3683.61
3002006.315.759.4547.13960.057624.44103.811.2688.2678515.6715.11
3002008201259.06575.2429389.35041.711.1718.18610610.4893.51
30020010251572.66592.56611312.76057.711.0558.0912956.31095.11
30020012362484.827108.05912787.86853.710.8787.96415183.71280.91
30020012.537.52587.954112.04413178.97059.910.8457.93815709.31326.71
300200164832108.936138.77215616.78340.310.6087.75219104.51628.21
3502508201271.62591.24216001.39572.613.24310.24319116.91320.71.2
4002008201271.62591.24218974.46517.114.4218.45115800.81200.71.2
40020010251588.365112.56623002.77864.414.2958.358193311475.11.2
40020012.537.525107.579137.04427100.59260.514.0628.2223522.71795.41.2
4003008201284.185107.24225121.816212.115.30512.295311561827.91.4
400300102515104.065132.56630609.31972615.19512.19838362.82255.11.4
400300123624122.507156.05935283.922746.915.03612.07345452.22663.31.4
40030012.537.525127.204162.04436488.523517.415.00612.04747152.72764.21.4
400300164832159.176202.77244350.328535.314.78911.86358557.43445.81.4

STEEL RECTANGULAR HOLLOW SECTION - HOT FORMED - BS EN10210 - 2:1997

Rectangular Hollow Section Sizes and Properties
SizeThicknessCorner RadiusMass/mArea of
Section
Second Moment
of Area
Radius Of
Gyration
Torsional ConstantsSection
Surface
Area
BACExternal
E
Internal
D
MAAxis x-x
Ix
Axis y-y
Iy
Axis x-x
rx
Axis y-y
ry
Inertia
J
Modulus
C
As
mmmmmmmmmmkg/mcm²cm⁴cm⁴cmcmcm⁴cm³m²/m
50252.53.752.52.6953.43310.43.3941.7410.9948.3515.3020.15
502534.533.1744.04311.93.8251.7160.9739.5266.1320.15
50302.53.752.52.8913.68311.85.2251.7911.19111.66.4890.16
503034.533.414.34313.65.9391.7671.16913.47.5420.16
50303.24.83.23.6114.60114.26.1971.7571.161147.9390.16
50303.65.43.64.0055.10315.46.6691.7381.14315.28.6950.16
50304644.3875.58816.57.0841.7181.12616.39.3960.16
60402.53.752.53.6764.68322.812.12.2081.6052510.70.2
604034.534.3525.54326.513.92.1851.58329.112.60.2
60403.24.83.24.6165.88127.814.62.1751.57430.613.30.2
60403.65.43.65.1366.54330.415.92.1561.55733.514.70.2
60404645.6437.18832.8172.1371.53936.3160.2
604057.556.8548.73238.119.52.0891.49642.318.90.2
60406967.98610.17442.321.42.041.4524721.50.2
60406.39.456.38.3110.58743.421.92.0251.43948.222.10.2
70502.53.752.54.4615.68339.123.12.6222.01745.5160.24
705034.535.2946.74345.526.82.5991.99553.318.80.24
70503.24.83.25.6217.1614828.22.591.98656.319.90.24
70503.65.43.66.2667.98352.830.92.5711.9696222.10.24
70504646.8998.78857.233.52.5521.95167.524.10.24
705057.558.42410.73267.3392.5051.90779.928.90.24
70506969.8712.57475.943.72.4571.86490.533.20.24
70506.39.456.310.28913.10778.244.92.4431.8593.334.40.24
804034.535.2946.74354.2182.8361.63443.6170.24
80403.24.83.25.6217.16157.218.92.8261.62546180.24
806034.536.2367.94372463.0112.40687.926.30.28
80603.65.43.67.3979.42383.953.42.9842.38102.830.90.28
80604648.15510.38891.3582.9652.362112.333.90.28
806057.559.99412.732108.468.42.9192.318134.340.90.28
806069611.75414.974123.577.52.8722.274153.847.40.28
80606.39.456.312.26715.627127.679.92.8572.261159.249.20.28
80404646.8998.78868.222.22.7861.59154.721.70.24
804057.558.42410.73280.325.72.7351.54864.225.90.24
80406969.8712.57490.528.52.6831.5047229.60.24
80406.39.456.310.28913.10793.329.22.6681.4917430.60.24
90503.65.43.67.3979.42398.338.73.232.0278928.70.28
90504648.15510.388107.141.93.2112.0099731.50.28
905057.559.99412.732127.349.23.1621.966115.337.90.28
905069611.75414.97414555.43.1121.923131.343.80.28
90506.39.456.312.26715.627149.9573.0971.91135.745.40.28
9050812815.03519.153173.664.63.011.836156.353.70.28
90603.65.43.67.96210.143111.859.13.3192.414122.2350.3
90604648.78311.188121.964.23.3012.396133.538.40.3
100503.65.43.67.96210.14312842.63.5522.049102.932.10.3
100504648.78311.188139.646.23.5322.032112.235.20.3
1005057.5510.77913.732166.554.33.4821.989133.642.40.3
1005069612.69616.174190.561.23.4321.945152.449.10.3
100506.39.456.313.25616.887197.1633.4161.932157.550.90.3
10050812816.29120.753229.971.73.3281.859182.160.50.3
100603.65.43.68.52710.863144.764.83.652.443142390.32
100604649.41111.98815870.53.6312.425155.342.80.32
1006057.5511.56414.732189.183.63.5832.382186.351.90.32
1006069613.63817.374217953.5342.339214.360.30.32
100606.39.456.314.24518.147224.898.13.522.326222.162.70.32
10060812817.54722.353263.8113.33.4362.252260.875.20.32
1008046410.66713.588194.9137.63.7883.182252.458.20.36
1008057.5513.13416.732234.3164.83.7423.138305.570.90.36
1008069615.52219.774270.1189.33.6963.094354.482.90.36
100806.39.456.316.22320.667280.2196.23.6823.081368.386.30.36
10080812820.05925.553331.7230.93.6033.006440.1104.60.36
1008010151024.27830.927380.8263.23.5092.917509.4123.30.36
1206046410.66713.588248.783.14.2782.47320051.80.36
1206057.5513.13416.732299.298.84.2292.43240.462.90.36
1206069615.52219.774345.3112.64.1792.386277.173.30.36
1208046411.92315.188302.6160.74.4633.253329.670.40.4
1208057.5514.70418.732365.4192.94.4173.209399.885.90.4
1208069617.40622.174423.3222.34.3693.166465100.70.4
120806.39.456.318.20123.187439.8230.54.3553.153483.6104.90.4
12080812822.57128.753525.3272.64.2743.079580.6127.70.4
1208010151027.41834.927609.5312.64.1772.991676.3151.30.4
1408046413.17916.788440.6183.85.1233.309409.882.50.44
1408057.5516.27420.732534221.15.0753.266497.7100.90.44
1408069619.2924.574620.9255.25.0273.222579.7118.40.44
140806.39.456.320.1825.707645.8264.85.0123.209603.2123.50.44
14080812825.08331.953776.3314.24.9293.136726.3150.70.44
1408010151030.55838.927908.1361.94.833.049849.4179.30.44
15010057.5518.62923.732738.7392.35.5794.066804.8137.40.5
15010069622.11628.174862.3455.95.5324.023942.7161.90.5
1501006.39.456.323.14729.487897.9474.15.5184.01982.61690.5
1608057.5517.84422.732744249.35.7213.312598.1115.90.48
1608069621.17426.974867.7288.15.6723.268697.4136.20.48
160806.39.456.322.15828.227903.2299.15.6573.255725.9142.10.48
18010069624.94231.7741350.1535.56.5184.1051220.1195.70.56
1801006.39.456.326.11433.2671407.2557.26.5044.0921272.2204.40.56
20010069626.82634.1741753.7588.67.1644.151409.8218.30.6
2001006.39.456.328.09235.7871828.9612.57.1494.1371470.32280.6

RELATED PAGES

FREQUENTLY ASKED QUESTIONS

Why choose RHS over SHS?

RHS gives greater bending stiffness and strength about its strong (deeper) axis than an SHS of similar mass, making it more efficient where load is predominantly one-directional, such as a beam spanning between supports. Where load acts in more than one direction, or a symmetrical profile is wanted, SHS is usually the better choice.

Which way round should RHS be oriented in a beam application?

Generally with the deeper dimension vertical, aligned with the main bending axis, to take advantage of its higher second moment of area in that direction — check the specific design calculation for your application rather than assuming orientation.

What section properties are given in the chart?

Typically overall dimensions, wall thickness, mass per metre, cross-sectional area, and second moment of area about both axes — the values needed for both material takeoff and structural design calculations.

Affiliate Partners

Related products that may help — using these links helps support the site.

Engineer's steel rules & set squares
(Amazon.com)

Amazon.com affiliate link

Engineer's steel rules & set squares
(Amazon.co.uk)

Amazon.co.uk affiliate link