HSS Hollow Structural Sections
HSS:TECHNICAL BROCHURE
©2013 Steel Tube Institute2516 Waukegan Road, Suite 172Glenview, IL 60025 TEL: 847.461.1701FAX: 847.660.7981
DIMENSIONS AND SECTION PROPERTIES
HSS Hollow Structural Sections
Technical Brochure: Dimensions & Section Properties
STEELTUBEINSTITUTE.ORG/HSS
The transformation of steel strip into hollow structural sections (HSS) is the result of a series of operations including forming, welding and sizing. Currently three methods are being used in North America for the manufacture of HSS. These methods are described below. Each method meets ASTM A-500 and CSA G-40.21-92 requirements for the the manufacture of HSS, and the sizes listed in this brochure may be produced to either standard.
Electric Resistance Welding (ERW) Process In the tube mill, flat steel strip (1) is formed continuously around its longitudinal axis to produce a round tube. This is done by moving the strip through a progressive set of rolls (2-6). The strip edges (7) are heated by either high frequency induction or contact welding and then forged together by weld rolls to create a continuous longitudinal weld without the addition of filler metal. The weld seam (8) is then cooled and processed through a set of sizing shaping rolls which cold-form it into a round (9), square (10) or rectangular (11) section.
Form-Square Weld-Square (ERW) ProcessIn the tube mill, flat steel strip (1) is formed continuously around its longitudinal axis to produce a round tube. This is done by moving the strip through a progressive set of rolls (2-6). The strip edges (7) are heated by either high frequency induction or contact welding and then forged together by weld rolls to create a continuous longitudinal weld without the addition of filler metal. The weld seam (8) is then cooled and processed through a set of sizing shaping rolls which cold-form it into a round (9), square (10) or rectangular (11) section.
Submerged Arc Weld (SAW) ProcessIn the tube mill, flat steel strip (1) is formed continuously around its longitudinal axis to produce a round tube. This is done by moving the strip through a progressive set of rolls (2-6). The strip edges (7) are heated by either high frequency induction or contact welding and then forged together by weld rolls to create a continuous longitudinal weld without the addition of filler metal. The weld seam (8) is then cooled and processed through a set of sizing shaping rolls which cold-form it into a round (9), square (10) or rectangular (11) section.
HSS Manufacturing Methods
HSS Hollow Structural Sections
Technical Brochure: Dimensions & Section Properties
STEELTUBEINSTITUTE.ORG/HSS
This publication presents tables of dimensions and section properties for rectangular, square, and round Hollow Structural Sections (HSS). HSS with a maximum periphery of 64 inches are manufactured by the electric-resistance welding (ERW) process. HSS with peripheries greater than 64 inches are manufactured by the submerged arc welding (SAW) process. See HSS Manufacturing Methods inside front cover in this publication.
The dimensions, including nominal width, nominal depth, nominal diameter and nominal wall thickness are subject to the permissible variations stipulated in ASTM A500 “Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes”. With today’s manufacturing methods, HSS are produced with more precision than in the past.
The strip used to produce HSS is now ordered to thicknesses with tighter tolerances. As a result, ERW HSS manufactured to A500 will often have a wall thickness close to the Specification allowable value. In a change from past practice, section property data is now based upon the design wall thickness.
The design wall thickness, t, for ERW HSS is less than the specified nominal wall thickness. For SAW HSS, the design wall thickness, t, is equal to the specified nominal wall thickness.The design wall thickness for each HSS size is included in the tabulated data.
The section property data based upon the design wall thickness, t, results in variations in the published area data that do not exceed 3.50% of the data based upon the minimum permissible wall thickness stipulated in ASTM A500. This is consistent with the similar section property data published for hot rolled structural shapes and the manufacturing tolerances associated with those products.
The section property data for rectangular and square ERW HSS are based upon outside corner radii equal to 2.0 times the design wall thickness. The section property data for rectangular and square SAW HSS are based upon outside corner radii equal to 3.6 times the design wall thickness for SAW sections with 5/8 inch nominal wall thicknesses; and 3.0 times the design wall thickness for SAW sections with nominal wall thicknesses equal to 1/2 inch and 3/8 inch.
General availability information for each size of HSS manufactured to ASTM A500 Grade B is contained in The Steel Tube Institute’s companion publication “Principal Producers and Capabilities”. Tables, summarizing the capabilities of principal producers by specific size and wall thickness, are included for rectangular, square and round HSS.
NOTE: The more universal terms “Hollow Structural Section”and “HSS”are used in this publication to designate rectangular, square and round structural steel tubing. These terms replace “structural tubing”and “pipe”, which had been used previously. The round Hollow Structural Sections include typical “pipe” size diameters and wall thicknesses, as well as typical HSS sizes.
Foreword
TITLE IF NECESSARY
Note: The information presented in this publication has been prepared in accordance with recognized engineering principles and is for general information only.While it is believed to be accurate, this information should not be used or relied upon for any specific application without competent professional examination and verification of its accuracy, suitability, and applicability by a licensed professional engineer, designer, or architect.The publication of the material contained herein is not intended as a representation or warranty on the part of The Steel Tube Institute of North America or of any other person named herein, that this information is suitable for any general or particular use or of freedom from infringement of any patent or patents.Anyone making use of this information assumes all liability arising from such use.
Caution must be exercised when relying upon other specifications and codes developed by other bodies and incorporated by reference herein since such material may be modified or amended from time to time subsequent to the printing of this edition.The Institute bears no responsibility for such material other than to refer to it and incorporate it by reference at the time of the initial publication of this edition.
HSS Hollow Structural Sections
Technical Brochure: Dimensions & Section Properties
STEELTUBEINSTITUTE.ORG/HSS
Dimensions and Sections Properties of Rectangle HSS
Dimensions and Sections Properties of Square HSS
Dimensions and Sections Properties of Round HSS
Nominal width minus 3 times the design wall thickness, t (in.)
Torsional shear constant of cross-section (in.3)
Outside diameter of round HSS (in.)
Nominal depth minus 3 times the design wall thickness, t (in.)
Moment of inertia of cross-section (in.4)
Moment of inertia of cross-section about the X-X axis (in.4)
Moment of inertia of cross-section about the Y-Y axis (in.4)
Torsional stiffness constant of cross-section (in.4)
Governing radius of gyration (in.)
Table of Contents
Nomenclature
2
b
h
18
D
Ix
14
C
I
2 14
Iy
Radius of gyration with respect to the X-X axis (in.)
Radius of gyration with respect to the Y-Y axis (in.)
Elastic section modulus (in.3)
Elastic section modulus about the X-X axis (in.3)
Elastic section modulus about the Y-Y axis (in.3)
Design wall thickness (in.)... “units added”
Plastic section modulus (in.3)
Plastic section modulus about the X-X axis (in.3)
Plastic section modulus about the Y-Y axis (in.3)
rx
ry
S
Sx
Sy
t
Z
J
r
Zx
Zy
2
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
in. in. in. Ib. in. in.2
66.453.940.8
63.951.939.3
61.449.937.8
58.947.936.3
53.943.933.3
48.939.930.3
in.4 in.3 in. in.3 in.4 in.3 ft.2
Y
Y
X X
639052804050
605050003840
571047303630
537044503420
411034202630
306025601970
12600101007670
1140092206990
1030083306320
924074605660
715057804390
540043703330
in.4 in.3 in. in.3
617510391
565468359
515426327
466386297
390325250
321269207
988081606250
848070105380
721059704580
606050203860
468039003000
353029502280
12.212.312.4
11.511.611.7
10.810.911.0
10.110.210.3
9.339.429.49
8.518.608.67
733601458
668548418
605497379
545448342
458378289
379313240
533440337
504417320
476394302
447371285
373311239
306256197
9.819.899.96
9.739.829.88
9.659.739.79
9.559.649.70
8.738.828.89
7.918.008.07
604495378
575472360
546448342
517425324
432356273
355294225
913739560
854692524
796645489
737598453
621504383
514418318
9.019.129.17
8.688.798.84
8.348.458.51
8.018.128.17
7.347.457.51
6.686.796.84
32
30
28
26
24
22
x
x
x
x
x
x
24
24
24
24
22
20
x
x
x
x
x
x
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
225.80183.50138.95
217.30176.70133.84
208.79169.89128.74
200.28163.08123.64
183.27149.47113.43
166.25135.86103.22
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
35.445.061.0
35.445.061.0
35.445.061.0
35.445.061.0
35.445.061.0
35.445.061.0
48.261.082.3
45.057.077.0
41.853.071.7
38.649.066.3
35.445.061.0
32.241.055.7
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
ly Sy ry Zy
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
This size produced by the submerged arc weld (SAW) process
3
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
43.935.927.3
41.433.925.8
35.028.321.518.1
30.324.618.715.7
20.916.013.410.8
33.927.921.3
25.720.916.013.410.8
221018501440
168014101100
851705547464
338283222189
58.747.641.234.3
783668524
15813410691.375.1
396032202450
328026702040
189015401180997
916757586496
195156134111
174014301100
462387302257210
259218169
236199154
188155120101
14411992.678.6
83.865.756.045.8
161138108
10385.666.957.046.5
259021801690
236019901540
1880155012001010
14401190926786
838657560458
14501240971
923770602513419
7.697.787.85
7.557.657.72
7.337.397.457.48
6.896.967.037.07
6.336.426.466.50
6.556.676.75
6.006.076.156.186.22
307255196
283236181
230188144122
18515211798.6
11589.375.661.5
199168130
13511286.473.159.4
245206160
210177137
14211791.177.3
84.670.855.647.4
29.323.820.617.1
13111187.3
52.744.635.530.425.0
7.107.197.25
6.376.466.52
4.934.995.045.07
3.343.393.443.47
1.681.731.751.78
4.814.894.95
2.482.532.582.612.63
286238183
243203156
16213210285.8
96.479.561.552.0
34.026.822.918.7
15212798.6
61.050.739.533.527.3
417340259
368301229
257209160134
16713710588.3
63.849.942.434.7
243200153
10989.969.558.747.7
6.016.126.17
5.685.795.84
5.175.205.235.25
4.504.534.574.58
3.873.903.923.93
4.684.794.84
3.833.873.903.923.93
20
20
20
20
20
18
18
x
x
x
x
x
x
x
18
16
12
8
4
12
6
x
x
x
x
x
x
x
5/8*1/2*3/8*
5/8*1/2*3/8*
5/81/23/85/16
5/81/23/85/16
1/23/85/161/4
5/8*1/2*3/8*
5/81/23/85/161/4
149.24122.2593.01
140.73115.4587.91
127.37103.3078.5265.87
110.3689.6868.3157.36
76.0758.1048.8639.43
115.2195.0372.59
93.3476.0758.1048.8639.43
0.6250.5000.375
0.6250.5000.375
0.5810.4650.3490.291
0.5810.4650.3490.291
0.4650.3490.2910.233
0.6250.5000.375
0.5810.4650.3490.2910.233
25.833.045.0
22.629.039.7
17.722.831.438.2
10.814.219.924.5
5.68.4610.714.2
16.221.029.0
7.39.914.217.622.8
29.037.050.3
29.037.050.3
31.440.054.365.7
31.440.054.365.7
40.054.365.782.8
25.833.045.0
28.035.748.658.974.3
in. in. in. Ib. in. in.2 in.4 in.3 in. in.3 in.4 in.3 ft.2
in.4 in.3 in. in.3
This size produced by the submerged arc weld (SAW) process
4
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSSNominal Size Weight
per Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
30.324.618.715.7
25.720.916.013.410.8
21.017.213.211.18.966.76
23.918.3
25.720.916.013.410.8
21.017.213.211.18.966.76
18.715.311.89.928.036.06
700581452384
274230181155127
54.14738.333.227.721.5
536422
407341267227186
12410584.172.359.645.9
47.241.233.629.224.419
13701120862727
681563436369300
17415012010385.265.5
990762
832685528446362
334279219186152116
14812710287.772.455.8
13611387.774.4
10284.966.356.446.1
67.356.945.038.531.624.2
96.976.3
98.281.863.954.344.3
68.357.445.338.731.724.3
53.345.336.030.925.419.5
1090904702595
815679531451368
539455360308253193
678534
687573447380310
478402317271222170
373317252216178137
6.006.066.126.15
5.645.705.775.85.83
5.065.155.235.275.315.35
5.325.40
5.175.235.295.325.35
4.774.844.914.944.985.01
4.474.554.634.674.714.74
16513510487.7
12910682.169.456.4
92.977.360.251.141.731.7
11690.0
12098.876.364.652.4
88.773.657.348.639.630.1
73.161.047.840.633.225.3
11796.875.364
68.557.645.338.731.7
27.023.519.116.613.810.8
89.370.4
81.568.153.445.537.2
41.235.12824.119.915.3
23.620.616.814.612.29.48
4.804.864.914.94
3.273.323.373.43.42
1.601.651.711.731.761.78
4.734.8
3.984.044.094.124.14
2.432.482.532.552.582.61
1.591.641.691.721.741.77
13511185.572.2
79.265.550.843.035.0
32.527.421.718.515.211.7
10481.2
95.178.560.751.441.8
48.440.431.626.922.016.7
28.524.119.116.413.510.3
204166127107
13210883.470.457.0
60.550.739.733.827.621.1
154118
14612091.877.462.6
83.769.353.745.536.928.0
52.644.134.629.524.118.4
4.50 4.53 4.57 4.58 3.83 3.87 3.90 3.92 3.93 3.17 3.20 3.23 3.25 3.27 3.28 4.12 4.17 3.83 3.87 3.90 3.92 3.93 3.17 3.20 3.23 3.25 3.27 3.28 2.83 2.87 2.90 2.92 2.93 2.95
16
16
16
14
14
14
14
x
x
x
x
x
x
x
12
8
4
12
10
6
4
x
x
x
x
x
x
x
5/81/23/85/16
5/81/23/85/16
5/81/23/85/161/43/16
1/2*3/8*
5/81/23/85/161/4
5/81/23/85/161/43/16
5/81/23/85/161/43/16
110.3689.6868.3157.36
93.3476.0758.1048.8639.43
76.3362.4647.9040.3532.6324.73
81.4262.39
93.3476.0758.1048.8639.43
76.3362.4647.9040.3532.6324.73
67.8255.6642.7936.1029.2322.18
0.5810.4650.3490.291
0.5810.4650.3490.2910.233
0.5810.4650.3490.2910.2330.174
0.5000.375
0.5810.4650.3490.2910.233
0.5810.4650.3490.2910.2330.174
0.5810.4650.3490.2910.2330.174
17.722.831.438.2
10.814.219.924.531.3
3.885.68.4610.714.220.0
21.029.0
14.218.525.731.439.9
7.39.914.217.622.831.5
3.885.608.4610.714.220.0
24.531.442.852.0
24.531.442.852.065.7
24.531.442.852.065.789.0
25.034.3
21.127.137.145.157.1
21.127.137.145.157.177.5
21.127.137.145.157.177.5
in. in. in. Ib. in. in.2 in.4 in.3 in. in.3 in.4 in.3 ft.2
in.4 in.3 in. in.3
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
This size produced by the submerged arc weld (SAW) process
5
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
19.014.612.29.90
21.017.213.211.18.966.76
18.715.311.89.928.036.06
16.413.510.48.767.105.37
10.08.46
8.176.635.02
7.596.174.67
298234200164
21017814012098.875.7
10691.172.962.851.940.0
40.435.328.925.221.016.4
21.318.6
13.111.18.72
5.104.403.55
545421356289
454377293248202153
27122717815212494.6
12210584.172.459.846.1
64.756.0
41.334.526.8
17.615.112.0
65.951.644.036.0
66.155.643.737.430.623.4
53.445.235.930.725.219.4
40.834.928.024.119.915.3
26.022.4
20.717.213.3
17.414.511.2
395310264216
397333262224184140
321271215184151116
24521016814411991.8
156134
12410379.6
10486.967.4
4.564.614.644.67
4.344.414.474.504.534.56
4.144.214.284.314.344.38
3.873.954.024.064.104.13
3.943.98
3.903.943.98
3.713.753.80
78.861.151.742.1
82.168.153.044.936.627.8
68.857.444.838.131.123.7
55.546.736.731.325.619.6
34.729.6
27.922.917.5
24.520.115.5
59.746.940.032.7
52.544.435.130.124.718.9
35.530.424.320.917.313.3
20.217.714.512.610.58.20
12.210.6
8.737.385.81
5.104.403.55
3.964.014.044.07
3.163.213.273.293.323.35
2.392.442.492.522.542.57
1.571.621.671.701.721.75
1.461.48
1.271.291.32
0.8200.8450.872
69.654.045.737.2
61.951.540.134.127.821.1
42.135.227.723.619.314.7
24.520.916.614.211.79.00
14.012.1
10.08.286.40
6.055.083.97
10278.366.153.5
97.780.462.152.442.532.2
71.159.045.838.831.624.0
44.637.529.525.220.615.7
25.521.8
18.415.111.6
11.69.647.49
3.533.573.583.60
3.173.203.233.253.273.28
2.832.872.902.922.932.95
2.502.532.572.582.602.62
2.482.50
2.422.432.45
2.252.272.28
12
12
12
12
12
12
12
x
x
x
x
x
x
x
10
8
6
4
3 1/2
3
2
x
x
x
x
x
x
x
1/23/85/161/4
5/81/23/85/161/43/16
5/81/23/85/161/43/16
5/81/23/85/161/43/16
3/85/16
5/161/43/16
5/161/43/16
69.2753.0044.6036.03
76.3362.4647.9040.3532.6324.73
67.8255.6642.7936.1029.2322.18
59.3248.8537.6931.8425.8219.63
36.4130.78
29.7224.1218.35
27.5922.4217.08
0.4650.3490.2910.233
0.5810.4650.3490.2910.2330.174
0.5810.4650.3490.2910.2330.174
0.5810.4650.3490.2910.2330.174
0.3490.291
0.2910.2330.174
0.2910.2330.174
18.525.731.439.9
10.814.219.924.531.343.0
7.39.914.217.622.831.5
3.885.608.4610.714.220.0
7.039.03
7.319.8814.2
3.875.68.5
22.831.438.248.5
17.722.831.438.248.566.0
17.722.831.438.248.566.0
17.722.831.438.248.566.0
31.438.2
38.248.566.0
38.248.566.0
in. in. in. Ib. in. in.2 in.4 in.3 in. in.3 in.4 in.3 ft.2
in.4 in.3 in. in.3
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
6
Nominal Size Weight per
Foot
WallThickness
t
b/t h/tY-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis lx Sx rx Zx
18.715.311.89.928.036.06
16.413.510.48.767.105.37
9.678.176.635.02
14.011.68.977.596.174.673.16
11.18.627.305.934.503.04
8.277.015.704.322.93
7.586.435.243.982.70
17815112010384.765.1
89.476.861.853.344.134.1
40.635.229.322.7
33.529.524.321.217.713.99.65
21.417.815.613.110.37.22
12.411.09.287.335.16
4.704.243.672.972.14
346288224190155118
20917613911896.773.8
10086.070.754.1
95.782.666.557.347.436.525.1
63.251.544.637.028.619.8
37.833.027.621.514.9
15.914.212.29.746.90
50.542.733.929.023.818.3
40.234.327.323.519.414.9
24.120.817.213.2
29.925.820.818.014.911.67.97
23.719.216.613.810.77.40
17.615.312.79.876.83
14.312.510.58.195.70
25321416914511991.4
20117113711896.974.6
12010485.866.2
14912910490.174.757.839.8
11896.183.269.153.637.0
88.076.363.649.434.2
71.762.652.541.028.5
3.683.733.793.823.853.88
3.503.573.633.663.693.73
3.533.563.603.63
3.263.343.413.443.483.523.55
3.263.343.383.413.453.49
3.263.303.343.383.42
3.083.123.173.213.25
62.251.940.534.428.121.4
51.343.033.828.823.618.0
30.426.021.316.3
40.334.127.023.119.014.610.0
31.925.321.717.913.79.37
23.720.316.712.88.80
20.317.514.411.17.65
44.537.830.025.721.216.3
29.825.620.617.814.711.4
16.214.111.79.09
16.814.712.110.68.876.934.83
12.210.28.927.515.894.12
8.287.306.194.893.44
4.704.243.672.972.14
3.093.143.193.223.253.28
2.342.392.442.472.492.52
2.052.072.102.13
1.541.591.641.671.701.721.75
1.391.441.461.491.511.54
1.221.251.281.301.33
0.7870.8120.8380.8640.890
53.344.534.829.624.218.4
35.830.123.720.216.612.7
18.716.013.210.1
20.617.614.012.110.07.665.26
14.711.810.28.456.524.48
9.738.426.995.413.74
5.765.064.263.342.33
80.466.451.443.535.326.7
58.648.737.932.226.219.9
31.226.521.616.5
36.731.024.420.917.113.18.90
26.521.118.014.811.47.75
17.715.212.59.646.61
11.09.567.996.224.31
2.832.872.902.922.932.95
2.502.532.572.582.602.62
2.402.422.432.45
2.172.202.232.252.272.282.30
2.122.152.172.182.202.22
2.072.082.102.122.13
1.901.921.931.951.97
10
10
10
10
10
10
10
x
x
x
x
x
x
x
8
6
5
4
3 1/2
3
2
x
x
x
x
x
x
x
5/81/23/85/161/43/16
5/81/23/85/161/43/16
3/85/161/43/16
5/81/23/85/161/43/161/8
1/23/85/161/43/161/8
3/85/161/43/161/8
3/85/161/43/161/8
67.8255.6642.7936.1029.2322.18
59.3248.8537.6931.8425.8219.63
35.1329.7224.1218.35
50.8142.0532.5827.5922.4217.0811.56
40.3431.3126.5321.5716.4411.13
30.0325.4620.7215.8010.71
27.4823.3419.0214.539.86
0.5810.4650.3490.2910.2330.174
0.5810.4650.3490.2910.2330.174
0.3490.2910.2330.174
0.5810.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.3490.2910.2330.1740.116
0.3490.2910.2330.1740.116
10.814.219.924.531.343.0
7.39.914.217.622.831.5
11.314.218.525.7
3.885.608.4610.714.220.031.5
4.537.039.0312.017.127.2
5.67.39.814.222.9
2.733.875.588.4914.2
14.218.525.731.439.954.5
14.218.525.731.439.954.5
25.731.439.954.5
14.218.525.731.439.954.583.2
18.525.731.439.954.583.2
25.731.439.954.583.2
25.731.439.954.583.2
in.4 in.3 in. in.3 in.4 in.3 ft.2
in.4 in.3 in. in.3
7
Y
Y
X X
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
in. in. in. Ib. in. in.2
16.413.510.48.767.105.37
14.011.68.977.596.174.67
9.747.586.435.243.98
in.4 in.3 in. in.3 in.4 in.3 ft.2
11710080.469.257.244.1
5245.236.832.026.620.7
13.211.29.888.386.64
23519715413110781.7
12810986.974.461.246.9
40.033.128.924.218.9
in.4 in.3 in. in.3
38.733.026.422.618.714.4
29.625.520.517.714.711.4
18.014.712.810.78.35
17414911910284.164.7
13311592.579.866.151.1
80.866.357.748.237.6
3.263.323.383.413.443.47
3.083.143.213.243.273.31
2.882.963.003.043.07
48.340.531.827.122.216.9
38.532.525.722.018.113.8
24.619.716.914.010.8
33.528.723.019.816.312.6
20.818.114.712.810.68.28
8.817.456.595.594.42
2.682.732.782.812.842.87
1.921.972.032.052.082.10
1.171.211.241.271.29
40.534.026.722.818.714.3
25.321.517.114.612.09.25
10.88.807.636.354.92
62.051.540.033.927.620.09
42.535.627.923.819.414.8
19.715.813.611.38.66
2.502.532.572.582.602.62
2.172.202.232.252.272.28
1.871.901.921.931.95
9
9
9
x
x
x
7
5
3
x
x
x
5/81/23/85/161/43/16
5/81/23/85/161/43/16
1/23/85/161/43/16
59.3248.8537.6931.8425.8219.63
50.8142.0532.5827.5922.4217.08
35.2427.4823.3419.0214.53
0.5810.4650.3490.2910.2330.174
0.5810.4650.3490.2910.2330.174
0.4650.3490.2910.2330.174
9.012.117.121.127.037.2
5.617.7511.314.218.525.7
3.455.607.319.8814.2
12.516.422.827.935.648.7
12.516.422.827.935.648.7
16.422.827.935.648.7
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
8
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
in. in. in. Ib. in. in.2
14.011.68.977.596.174.67
11.79.747.586.435.243.982.70
8.816.885.854.773.632.46
6.185.264.303.282.23
in.4 in.3 in. in.3 in.4 in.3 ft.2
72.362.550.643.836.428.2
26.623.619.617.214.411.37.90
11.710.08.817.495.944.20
3.733.382.942.391.72
15012710085.870.353.7
70.361.149.342.635.327.218.7
34.328.524.920.816.211.3
12.110.99.367.485.30
in.4 in.3 in. in.3
28.524.619.817.114.210.9
20.517.914.712.810.68.275.73
14.612.110.68.886.944.83
9.568.437.125.613.93
11498.279.168.356.643.7
82.071.858.751.042.533.122.9
58.548.542.435.527.819.3
38.233.728.522.415.7
2.852.912.973.003.033.06
2.642.712.782.822.852.882.92
2.582.652.692.732.772.80
2.492.532.572.612.65
36.130.524.120.616.913.0
27.423.518.816.113.310.27.02
20.016.113.911.58,876.11
13.411.69.687.515.19
24.120.816.914.612.19.39
13.311.89.808.587.215.653.95
7.816.635.874.993.962.80
3.733.382.942.391.72
2.272.322.382.402.432.46
1.511.561.611.631.661.691.71
1.151.201.231.251.281.31
0.7770.8020.8270.8530.879
29.524.919.816.913.910.7
16.614.311.59.918.206.334.36
9.647.886.845.704.433.07
4.614.063.432.701.90
46.038.430.025.520.815.8
28.724.419.316.513.610.47.10
17.414.012.110.07.685.27
8.657.576.354.953.44
2.172.202.232.252.272.28
1.831.871.901.921.931.951.97
1.701.731.751.771.781.80
1.571.581.601.621.63
8
8
8
8
x
x
x
x
6
4
3
2
x
x
x
x
x
5/81/23/85/161/43/16
5/81/23/85/161/43/161/8
1/23/85/161/43/161/8
3/85/161/43/161/8
50.8142.0532.5827.5922.4217.08
42.3035.2427.4823.3419.0214.539.86
31.8424.9321.2117.3213.259.01
22.3719.0815.6211.978.16
0.5810.4650.3490.2910.2330.174
0.5810.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.3490.2910.2330.1740.116
7.39.914.217.622.831.5
3.85.68.4610.714.220.031.5
3.455.607.319.8814.222.9
2.733.875.588.4914.2
7.39.914.217.622.831.5
3.85.68.4610.714.220.031.5
3.455.607.319.8814.222.9
2.733.875.588.4914.2
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
9
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
in. in. in. Ib. in. in.2
9.747.586.435.243.982.70
8.816.885.854.773.632.46
7.886.185.264.303.282.23
3.842.932.00
in.4 in.3 in. in.3 in.4 in.3 ft.2
35.629.325.521.316.611.6
20.717.315.212.810.07.03
10.28.717.746.605.243.71
2.582.101.52
27.221.418.315.011.47.79
21.116.814.411.89.076.20
15.012.110.58.686.694.60
5.524.323.00
in.4 in.3 in. in.3
17.314.112.310.27.965.52
14.511.910.48.726.814.73
11.69.738.547.195.653.95
5.674.493.16
60.649.543.035.927.919.3
50.741.836.530.523.816.6
40.734.129.925.219.813.8
19.815.711.1
2.502.562.592.622.652.68
2.402.462.502.532.562.59
2.272.352.382.422.452.49
2.272.312.35
21.917.515.012.49.526.53
18.815.113.110.88.335.73
15.812.811.19.227.144.93
7.645.954.13
14.211.710.28.536.654.63
10.48.637.586.385.023.51
6.805.815.164.403.502.48
2.582.101.52
1.911.971.992.022.052.07
1.531.581.611.641.661.69
1.141.191.211.241.261.29
0.8190.8450.871
17.313.811.99.837.575.20
12.610.28.837.335.673.91
8.466.956.055.063.942.73
3.022.391.68
27.221.418.315.011.47.79
21.116.814.411.89.076.20
15.012.110.58.686.694.60
5.524.323.00
1.871.901.921.931.951.97
1.701.731.751.771.781.80
1.531.571.581.601.621.63
1.431.451.47
7
7
7
7
x
x
x
x
5
4
3
2
x
x
x
x
1/23/85/161/43/161/8
1/23/85/161/43/161/8
1/23/85/161/43/161/8
1/43/161/8
35.2427.4823.3419.0214.539.86
31.8424.9321.2117.3213.259.01
28.4322.3719.0815.6211.978.16
13.9110.77.31
0.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.2330.1740.116
7.7511.314.218.525.740.1
5.608.4610.714.220.031.5
3.455.607.319.8814.222.9
5.588.4914.2
12.117.121.127.037.257.3
12.117.121.127.037.257.3
12.117.121.127.037.257.3
27.037.257.3
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
10
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
in. in. in. Ib. in. in.2
8.816.885.854.773.632.46
7.886.185.264.303.282.23
6.955.484.683.842.932.00
4.784.103.372.581.77
in.4 in.3 in. in.3 in.4 in.3 ft.2
30.825.522.318.714.610.2
17.814.913.211.18.766.15
8.697.486.675.704.553.23
2.772.522.211.801.31
59.848.141.434.226.318.0
40.332.828.423.618.212.6
23.119.316.914.211.17.73
8.427.606.555.243.72
in.4 in.3 in. in.3
13.711.39.858.256.444.48
11.39.438.276.965.463.81
8.957.576.695.664.473.14
5.715.114.373.492.47
41.133.929.624.719.313.4
34.028.324.820.916.411.4
26.822.720.117.013.49.43
17.115.313.110.57.42
2.162.222.252.282.312.34
2.082.142.172.202.232.26
1.972.042.072.102.142.17
1.891.931.972.012.05
17.213.811.99.877.625.24
14.611.910.38.536.604.56
12.19.908.617.195.593.87
7.936.955.844.583.19
12.310.28.917.475.844.07
8.897.476.585.564.383.08
5.794.994.453.803.032.15
2.772.522.211.801.31
1.871.921.951.982.012.03
1.501.551.581.611.631.66
1.121.171.191.221.251.27
0.7600.7850.8100.8360.861
15.212.210.58.726.734.63
11.08.947.756.455.003.46
7.286.035.274.413.452.40
3.463.072.612.071.46
23.018.215.612.89.766.66
17.814.212.210.17.745.30
12.710.38.917.395.713.93
6.355.584.703.682.57
1.701.731.751.771.781.80
1.531.571.581.601.621.63
1.371.401.421.431.451.47
1.231.251.271.281.30
6
6
6
6
x
x
x
x
5
4
3
2
x
x
x
x
1/23/85/161/43/161/8
1/23/85/161/43/161/8
1/23/85/161/43/161/8
3/85/161/43/161/8
31.8424.9321.2117.3213.259.01
28.4322.3719.0815.6211.978.16
25.0319.8216.9613.9110.707.31
17.2714.8312.219.426.46
0.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.3490.2910.2330.1740.116
7.7511.314.218.525.740.1
5.68.410.714.220.031.5
3.455.607.319.8814.222.9
2.733.875.588.4914.2
9.9014.217.622.831.548.7
9.914.217.622.831.548.7
9.914.217.622.831.548.7
14.217.622.831.548.7
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
11
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
in. in. in. Ib. in. in.2
6.955.484.683.842.932.00
6.024.784.103.372.581.77
3.142.411.65
4.093.522.912.241.54
in.4 in.3 in. in.3 in.4 in.3 ft.2
14.912.611.19.467.485.27
7.186.255.604.813.852.75
3.132.531.82
2.282.101.841.511.10
30.324.921.718.014.09.66
17.614.913.111.08.646.02
7.936.264.40
6.615.995.174.152.95
in.4 in.3 in. in.3
8.497.176.325.354.222.97
6.575.655.034.293.412.41
3.763.012.14
4.143.743.232.601.86
21.217.915.813.410.67.42
16.414.112.610.78.536.03
9.407.515.34
10.49.358.086.504.65
1.751.811.841.871.901.93
1.651.721.751.781.821.85
1.731.771.80
1.591.631.671.701.74
10.98.967.796.495.053.50
8.837.346.425.384.212.93
4.833.792.65
5.715.054.273.372.37
7.436.305.574.733.742.64
4.784.163.733.212.571.83
2.502.031.46
2.282.101.841.511.10
1.461.521.541.571.601.62
1.091.141.171.191.221.25
0.9991.021.05
0.7480.7720.7970.8230.848
9.357.676.675.574.343.01
6.105.104.483.772.962.07
2.952.331.64
2.882.572.201.751.24
14.511.710.18.326.414.39
10.38.447.336.104.733.26
4.993.892.70
5.204.593.883.052.13
1.371.401.421.431.451.47
1.201.231.251.271.281.30
1.181.201.22
1.071.081.101.121.13
5
5
5
5
x
x
x
x
4
3
2 1/2
2
x
x
x
x
1/23/85/161/43/161/8
1/23/85/161/43/161/8
1/43/161/8
3/85/161/43/161/8
25.0319.8216.9613.9110.707.31
21.6317.2714.8312.219.426.46
11.368.786.03
14.7212.7010.518.155.61
0.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.2330.1740.116
0.3490.2910.2330.1740.116
5.608.4610.714.220.031.5
3.455.607.319.8814.222.9
7.711.418.6
2.733.875.588.4914.2
7.7511.314.218.525.740.1
7.7511.314.218.525.740.1
18.525.740.1
11.314.218.525.740.1
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
12
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
in. in. in. Ib. in. in.2
4.093.522.912.241.54
3.743.232.672.061.42
3.392.942.441.891.30
in.4 in.3 in. in.3 in.4 in.3 ft.2
5.014.523.913.162.27
3.172.892.532.061.49
1.801.671.481.220.898
10.69.417.966.264.38
7.576.775.784.593.23
4.834.403.823.082.20
in.4 in.3 in. in.3
3.973.573.072.471.76
3.383.072.662.151.54
2.802.562.251.831.32
7.937.146.154.933.52
6.776.135.324.303.09
5.605.134.493.662.65
1.391.421.451.491.52
1.351.381.411.441.47
1.291.321.361.391.43
5.124.513.813.002.11
4.483.973.382.671.88
3.843.432.942.341.66
3.343.022.612.101.51
2.542.322.021.651.19
1.801.671.481.220.898
1.111.131.161.191.21
0.9220.9470.9730.9991.030
0.7290.7540.7790.8040.830
4.183.693.122.461.73
3.202.852.431.931.36
2.312.081.791.431.02
6.595.754.813.742.59
5.324.673.933.082.14
4.043.593.052.411.69
1.071.081.101.121.13
0.981.001.021.031.05
0.900.920.930.950.97
4
4
4
x
x
x
3
2 1/2
2
x
x
x
3/85/161/43/161/8
3/85/161/43/161/8
3/85/161/43/161/8
14.7212.7010.518.155.61
13.4411.649.667.515.18
12.1710.588.816.874.75
0.3490.2910.2330.1740.116
0.3490.2910.2330.1740.116
0.3490.2910.2330.1740.116
5.607.319.8814.222.9
4.165.597.7311.418.6
2.733.875.588.4914.2
8.4610.714.220.031.5
8.4610.714.220.031.5
8.4610.714.220.031.5
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
13
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
3.392.942.441.891.30
2.211.711.19
1.971.541.07
2.642.211.711.19
2.351.971.541.07
1.741.370.96
2.772.542.231.821.33
1.931.591.16
0.6380.5440.411
2.181.931.591.16
1.241.110.9320.692
0.5430.4670.355
6.165.534.753.782.67
3.743.002.13
1.791.491.09
4.343.743.002.13
2.872.522.051.47
1.441.210.886
2.722.482.171.761.28
1.721.411.03
1.461.210.896
1.941.721.411.03
1.591.421.180.867
1.120.9450.706
4.754.343.793.092.23
2.572.111.54
2.552.121.57
2.922.572.111.54
2.382.131.771.30
1.681.421.06
1.181.221.251.281.31
1.081.111.14
1.141.171.21
1.051.081.111.14
1.011.041.071.10
0.9821.021.05
3.593.202.742.181.54
2.161.731.23
1.981.601.15
2.512.161.731.23
2.111.831.481.06
1.511.240.895
2.212.031.781.461.06
1.541.270.931
0.8510.7250.548
1.741.541.270.931
1.241.110.9320.692
0.7250.6220.474
0.9040.9300.9560.9831.01
0.9350.9630.990
0.5690.5940.619
0.9080.9350.9630.990
0.7250.7510.7780.804
0.5590.5840.610
2.822.522.161.721.22
1.901.521.09
1.060.8670.630
2.201.901.521.09
1.581.381.120.803
0.9110.7520.550
4.574.033.402.671.87
2.872.271.59
1.881.511.08
3.392.872.271.59
2.602.231.781.25
1.581.280.920
0.900.920.930.950.97
0.850.870.88
0.770.780.80
0.830.850.870.88
0.750.770.780.80
0.680.700.72
31/2
31/2
31/2
3
3
3
x
x
x
x
x
x
2 1/2
2
1 1/2
2 1/2
2
1 1/2
x
x
x
x
x
x
3/85/161/43/161/8
1/43/161/8
1/43/161/8
5/161/43/161/8
5/161/43/161/8
1/43/161/8
12.1710.588.816.874.75
7.966.234.33
7.115.593.90
9.517.966.234.33
8.457.115.593.90
6.264.963.48
0.3490.2910.2330.1740.116
0.2330.1740.116
0.2330.1740.116
0.2910.2330.1740.116
0.2910.2330.1740.116
0.2330.1740.116
4.165.597.7311.418.6
7.7311.418.6
3.445.629.93
5.597.7311.418.6
3.875.588.4914.2
3.445.629.93
7.039.0312.017.127.2
9.8814.222.9
12.017.127.2
7.319.8814.222.9
7.319.8814.222.9
9.8814.222.9
in. in. in. Ib. in. in.2 in.4 in.3 in. in.3 in.4 in.3 ft.2
in.4 in.3 in. in.3
14
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
Y
Y
X X
DIMENSIONS AND SECTION PROPERTIES OF RECTANGULAR HSS
in. in. in. Ib. in. in.2
1.190.84
1.741.370.956
1.511.190.84
1.020.724
1.280.898
1.020.72
0.8450.608
in.4 in.3 in. in.3 in.4 in.3 ft.2
0.1730.138
0.9300.7860.589
0.4490.3900.300
0.1430.115
0.7130.538
0.3130.244
0.1120.0922
0.5260.408
1.901.551.12
1.100.9290.687
0.4120.322
1.320.957
0.6640.496
0.3010.238
in.4 in.3 in. in.3
0.7130.545
1.060.8940.667
0.8220.7050.535
0.5170.403
0.7640.574
0.4950.383
0.3500.280
1.070.817
1.331.120.833
1.030.8820.668
0.6460.503
0.8590.646
0.4950.383
0.3500.280
0.9470.987
0.8740.9040.934
0.8260.8600.892
0.7960.834
0.8190.848
0.6970.728
0.6430.679
0.9890.728
1.371.120.809
1.110.9150.671
0.7130.532
0.9520.693
0.6390.475
0.4800.366
0.3450.276
0.9300.7860.589
0.5990.5200.399
0.2850.230
0.7130.538
0.4170.325
0.2250.184
0.3800.405
0.7310.7580.785
0.5460.5720.597
0.3740.399
0.7470.774
0.5540.581
0.3650.390
0.4320.325
1.170.9560.694
0.7640.6360.469
0.3600.274
0.8770.639
0.5210.389
0.2880.223
0.7920.585
1.821.461.04
1.291.050.759
0.6480.483
1.300.927
0.8220.599
0.5050.380
0.620.63
0.680.700.72
0.600.620.63
0.530.55
0.660.68
0.530.55
0.450.47
3
2 1/2
2 1/2
2 1/2
2 1/4
2
2
x
x
x
x
x
x
x
1
2
1 1/2
1
2
1 1/2
1
x
x
x
x
x
x
x
3/161/8
3/161/81/4
1/43/161/8
3/161/8
3/161/8
3/161/8
3/161/8
4.323.05
6.264.963.48
5.414.323.05
3.682.63
4.643.27
3.682.63
3.042.20
0.1740.116
0.2330.1740.116
0.2330.1740.116
0.1740.116
0.1740.116
0.1740.116
0.1740.116
2.755.62
5.588.4914.2
3.445.629.93
2.755.62
8.4914.2
5.629.93
2.755.62
14.222.9
7.7311.418.6
7.7311.418.6
11.418.6
9.9316.4
8.4914.2
8.4914.2
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t Y-Y Axis
lx Sx rx Zx
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea
X-X Axis
lx Sx rx Zx
15
DIMENSIONS AND SECTION PROPERTIES ROPERTIES OF SQUARE HSS
This size produced by the submerged arc weld (SAW) process
in. in. in. Ib. in. in.2
76.461.946.8
71.457.943,8
66.453.940.8
61.449.937.8
56.445.934.8
51.445.931.8
46.437.928.8
41.433.925.8
35.028.321.518.1
12300101007750
1010083206370
814067305150
646053504110
503041703210
382031902460
283023701830
202017001320
13701130873739
197001590012000
16200130009870
13100106008010
1050084306400
818066105020
626050703850
467037902880
337027402090
2170177013501140
in.4 in.3 in. in.3
771634485
673555424
582480368
497411316
419348268
347290223
283237183
224189147
17114110992.3
12.712.812.9
11.912.012.1
11.111.211.2
10.310.410.4
9.449.539.60
8.628.728.78
6.997.907.97
6.997.087.15
6.256.316.3763.9
890727553
778637485
674552421
577474362
487401307
406335256
264275211
264220169
200164126106
37 1230991750
1070869658
933755572
801649492
679551418
567461350
465379288
373305232
276224171144
10.3410.4510.51
9.689.799.84
9.019.129.17
8.348.458.51
7.687.797.84
7.017.127.17
6.346.456.51
5.685.795.84
5.175.205.235.25
32
30
28
26
24
22
20
18
16
x
x
x
x
x
x
x
x
x
32
30
28
26
24
22
20
18
16
x
x
x
x
x
x
x
x
x
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/8*1/2*3/8*
5/81/23/85/16
259.83210.72159.37
242.82197.11149.16
225.80183.50138.95
208.79169.89128.74
191.78156.28118.53
174.76142.67108.32
157.75129.0698.12
140.73115.4587.91
127.37103.3078.5265.87
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.6250.5000.375
0.5810.4650.3490.291
48.261.082.3
45.057.077.0
41.853.071.7
38.649.066.3
35.445.061.0
32.241.055.7
29.037.050.3
25.833.045.0
24.531.442.852.0
48.261.082.3
45.057.077.0
41.853.071.7
38.649.066.3
35.445.061.0
32.241.055.7
29.037.050.3
25.833.045.0
24.531.442.852.0
Nominal Size Weight per
Foot
WallThickness
t
b/t h/tTorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea lx Sx rx Zx
Y
Y
X X
in.4 in.3 ft.2
16
DIMENSIONS AND SECTION PROPERTIES OF SQUARE HSS
in. in. in. Ib. in. in.2
30.324.618.715.7
25.720.916.013.410.88.15
21.017.213.211.18.966.76
18.715.311.89.928.036.064.09
16.413.510.48.767.105.373.62
14.011.68.977.596.174.673.16
897743577490
548457357304248189
304256202172141108
21618314512410278.253.5
14612510085.670.754.437.4
93.480.565.056.146.536.024.8
14301170900759
885728561474384290
498412320271220167
35629623119615912182.0
24420416013611184.557.3
15813310589.773.556.138.2
in.4 in.3 in. in.3
12810682.569.9
91.476.259.550.741.431.5
60.851.240.434.528.321.6
47.940.632.227.622.717.411.9
36.531.224.921.417.713.69.34
26.723.018.616.013.310.37.09
5.445.495.555.58
4.624.684.734.764.794.82
3.803.863.923.943.974.00
3.403.453.513.543.563.593.62
2.993.043.103.133.153.183.21
2.582.632.692.722.752.772.80
15112495.480.5
10989.669.258.647.636.0
73.260.747.240.132.724.8
58.148.437.832.126.220.013.6
44.737.529.425.120.515.710.7
33.127.922.118.915.511.98.13
208170130109
15112394.679.764.548.6
10284.264.854.844.433.6
81.667.452.144.035.827.118.3
63.252.440.734.528.121.314.4
47.139.330.726.121.316.211.0
4.504.534.574.58
3.833.873.903.923.933.95
3.173.203.233.253.273.28
2.802.872.902.922.932.952.97
2.502.532.572.582.602.622.63
2.172.202.232.252.272.282.30
14
12
10
9
8
7
x
x
x
x
x
x
14
12
10
9
8
7
x
x
x
x
x
x
5/81/23/85/16
5/81/23/85/161/43/16
5/81/23/85/161/43/16
5/81/23/85/161/43/161/8
5/81/23/85/161/43/161/8
5/81/23/85/161/43/161/8
110.3689.6868.3157.36
93.3476.0758.1048.8639.4329.84
76.3362.4647.9040.3532.6324.73
67.8255.6642.7936.1029.2322.1814.96
59.3248.8537.6931.8425.8219.6313.26
50.8142.0532.5827.5922.4217.0811.56
0.5810.4650.3490.291
0.5810.4650.3490.2910.2330.174
0.5810.4650.3490.2910.2330.174
0.5810.4650.3490.2910.2330.1740.116
0.5810.4650.3490.2910.2330.1740.116
0.5810.4650.3490.2910.2330.1740.116
21.127.137.145.1
17.722.831.438.248.566.0
14.218.525.731.439.954.5
12.516.422.827.935.648.774.6
10.814.219.924.531.343.066.0
9.0512.117.121.127.037.257.3
21.127.137.145.1
17.722.831.438.248.566.0
14.218.525.731.439.954.5
12.516.422.827.935.648.774.6
10.814.219.924.531.343.066.0
9.0512.117.121.127.037.257.3
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea lx Sx rx Zx
Y
Y
X X
in.4 in.3 ft.2
17
DIMENSIONS AND SECTION PROPERTIES OF SQUARE HSS
in. in. in. Ib. in. in.2
11.79.747.586.435.243.982.70
6.885.854.773.632.46
7.886.185.264.303.282.23
6.955.484.683.842.932.00
6.024.784.103.372.581.77
55.248.339.534.328.622.315.5
29.725.921.717.011.8
26.021.719.016.012.68.80
18.115.313.511.49.026.35
11.910.39.147.806.214.40
94.981.164.655.445.635.023.9
49.042.234.826.718.3
44.636.131.225.819.913.7
31.325.722.318.514.49.92
21.017.515.312.810.06.91
in.4 in.3 in. in.3
18.416.113.211.49.547.425.15
10.89.437.906.174.30
10.48.687.626.415.033.52
8.036.796.005.084.012.82
5.975.134.573.903.102.20
2.172.232.282.312.342.372.39
2.082.112.132.162.19
1.821.871.901.931.961.99
1.611.671.701.731.751.78
1.411.471.491.521.551.58
23.219.815.813.611.28.635.92
13.111.39.327.194.95
13.110.69.167.615.894.07
10.28.367.276.064.713.27
7.706.395.594.693.672.56
33.428.122.118.915.411.88.03
18.415.712.99.856.72
18.714.912.810.58.085.53
14.811.910.28.446.494.45
11.29.147.916.565.073.49
1.831.871.901.921.931.951.97
1.731.751.771.781.80
1.531.571.581.601.621.63
1.371.401.421.431.451.47
1.201.231.251.271.281.30
6
5 1/2
5
4 1/2
4
x
x
x
x
x
6
5 1/2
5
4 1/2
4
x
x
x
x
x
5/81/23/85/161/43/161/8
3/85/161/43/161/8
1/23/85/161/43/161/8
1/23/85/161/43/161/8
1/23/85/161/43/161/8
42.3035.2427.4823/3419.0214.539.86
24.9321.2117.3213.259.01
28.4322.3719.0815.6211.978.16
25.0319.8216.9613.9110.707.31
21.6317.2714.8312.219.426.46
0.5810.4650.3490.2910.2330.1740.116
0.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
0.4650.3490.2910.2330.1740.116
7.39.914.217.622.831.548.7
12.815.920.628.644.4
7.7511.314.218.525.740.1
6.689.8912.516.322.935.8
5.608.4610.714.220.031.5
7.39.914.217.622.831.548.7
12.815.920.628.644.4
7.7511.314.218.525.740.1
6.689.8912.516.322.935.8
5.608.4610.714.220.031.5
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per FootCross
SectionalArea lx Sx rx Zx
Y
Y
X X
in.4 in.3 ft.2
18
DIMENSIONS AND SECTION PROPERTIES OF SQUARE HSS
in. in. in. Ib. in. in.2
4.093.522.912.241.54
3.392.942.441.891.30
2.351.971.541.07
1.741.370.96
1.511.190.84
6.495.845.044.052.90
3.783.453.022.461.78
1.821.631.351.00
1.130.950.71
0.750.640.49
11.29.898.356.564.58
6.645.945.084.032.84
3.202.792.251.61
1.961.601.15
1.311.090.796
in.4 in.3 in. in.3
3.713.342.882.311.66
2.522.302.011.641.19
1.461.301.080.80
1.010.850.63
0.750.640.49
1.261.291.321.351.37
1.061.081.111.141.17
0.880.910.940.97
0.810.840.86
0.700.730.76
4.694.143.502.761.93
3.252.902.481.971.40
1.881.631.320.95
1.281.040.76
0.960.800.58
6.775.904.923.832.65
4.744.183.522.761.92
2.742.351.861.31
1.851.481.05
1.411.140.817
1.071.081.101.121.13
0.900.920.930.950.97
0.750.770.780.80
0.680.700.72
0.600.620.63
3 1/2
3
2 1/2
2 1/4
2
x
x
x
x
x
3 1/2
3
2 1/2
3 1/4
2
x
x
x
x
x
3/85/161/43/161/8
3/85/161/43/161/8
5/161/43/161/8
1/43/161/8
1/43/161/8
14.7212.7010.518.155.61
12.1710.588.816.874.75
8.457.115.593.90
6.264.963.48
5.414.323.05
0.3490.2910.2330.1740.116
0.3490.2910.2330.1740.116
0.2910.2330.1740.116
0.2330.1740.116
0.2330.1740.116
7.039.0312.017.127.2
5.607.319.8814.222.9
5.597.7311.418.6
6.669.9316.4
5.588.4914.2
7.039.0312.017.127.2
5.607.319.8814.222.9
5.597.7311.418.6
6.669.9316.4
5.588.4914.2
Nominal Size Weight per
Foot
WallThickness
t
b/t h/t
x
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per Foot
Cross Sectional
Area lx Sx rx Zx
Y
Y
X X
in.4 in.3 ft.2
19
DIMENSIONS AND SECTION PROPERTIES OF ROUND HSS
in. in. lb. in. in.2
Nominal Size Weight per
Foot
WallThickness
t x
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per Foot
D/t
lx Sx rx Zx
Outside Diameter Wall
Cross- Sectional
Area
43.057.3
38.751.6
34.439.345.855.0
30.140.148.1
27.436.554.7
28.521.5
25.619.4
22.719.917.214.4
19.815.012.5
17.913.69.16
27202080
19701510
137012101050886
907698589
678523359
272208
219168
171152131111
13010084.2
10682.156.3
5.245.24
4.714.71
4.194.194.194.19
3.673.673.67
3.343.343.34
20.000
18.000
16.000
14.000
12.750
0.5000.375
0.5000.375
0.5000.4380.3750.312
0.5000.3750.312
0.5000.3750.250
10478.67
93.5470.65
82.8572.8662.6452.32
72.1654.6245.65
65.4849.6133.41
0.4650.349
0.4650.349
0.4650.4070.3490.291
0.4650.3490.291
0.4650.3490.233
13601040
985754
685606526443
453349295
339262180
136104
10983.8
85.775.865.755.4
64.849.842.1
53.241.028.2
6.916.95
6.206.24
5.495.515.535.55
4.794.834.85
4.354.394.43
177135
143109
11299.085.571.8
85.265.154.7
70.253.736.5
in.4 in.3 in. in.3 in.4 in.3 ft.2
Y
Y
X X
20
DIMENSIONS AND SECTION PROPERTIES OF ROUND HSS
in. in. lb. in. in.2
Nominal Size Weight per
Foot
WallThickness
t x
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per Foot
D/t
lx Sx rx Zx
Outside Diameter Wall
Cross- Sectional
Area
15.011.47.70
17.213.910.68.887.155.37
13.410.28.536.875.17
11.99.077.856.144.62
28.521.5
25.619.4
22.719.917.214.4
19.815.012.5
17.913.69.16
398309213
383317247209171130
281219186152115
19915613610882.5
74.157.439.6
76.663.549.341.934.125.9
58.545.538.731.524.0
46.236.131.625.119.1
2.812.812.81
2.622.622.622.622.622.62
2.522.522.522.522.52
2.262.262.262.262.26
10.750
10.000
9.625
8.625
0.5000.3750.188
0.6250.5000.3750.3120.2500.188
0.5000.3750.3120.2500.188
0.5000.3750.3120.2500.188
54.7941.5928.06
62.6450.7838.5832.3126.0619.72
48.7737.0831.0625.0518.97
43.4333.0728.5822.3816.96
0.4650.3490.233
0.5810.4650.3490.2910.2330.174
0.4650.3490.2910.2330.174
0.4650.3490.3000.2330.174
199154106
19115912310585.364.8
14111093.075.957.7
10077.868.154.141.3
37.028.719.8
38.331.724.720.917.113.0
29.222.819.315.812.0
23.118.015.812.59.57
3.643.683.72
3.343.383.413.433.453.47
3.243.283.303.323.34
2.892.932.952.972.99
49.237.825.8
51.642.332.527.422.216.8
39.030.025.420.615.5
31.023.920.816.412.4
in.4 in.3 in. in.3 in.4 in.3 ft.2
Y
Y
X X
21
DIMENSIONS AND SECTION PROPERTIES OF ROUND HSS
in. in. lb. in. in.2
Nominal Size Weight per
Foot
WallThickness
t x
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per Foot
D/t
lx Sx rx Zx
Outside Diameter Wall
Cross- Sectional
Area
21.825.0
16.121.525.832.243.1
15.120.124.130.040.260.3
7.987.01
10.37.846.595.324.00
9.557.296.134.953.732.51
10694.1
12810085.870.353.8
10280.969.156.843.529.7
27.824.7
34.126.822.918.714.3
29.323.119.816.212.48.49
2.002.00
1.961.961.961.961.96
1.831.831.831.831.831.83
7.625
7.500
7.000
0.3750.328
0.5000.3750.3120.2500.188
0.5000.3750.3120.2500.1880.125
29.0625.59
37.4228.5623.9719.3814.70
34.7426.5622.3118.0413.699.19
0.3490.305
0.4650.3490.2910.2330.174
0.4650.3490.2910.2330.1740.116
52.947.1
63.950.242.935.226.9
51.240.434.628.421.714.9
13.912.3
17.013.411.49.377.17
14.611.69.888.116.214.25
2.582.59
2.492.532.552.572.59
2.322.352.372.392.412.43
18.516.4
23.017.915.112.39.34
19.915.513.110.78.115.50
in.4 in.3 in. in.3 in.4 in.3 ft.2
Y
Y
X X
22
DIMENSIONS AND SECTION PROPERTIES OF ROUND HSS
in. in. lb. in. in.2
Nominal Size Weight per
Foot
WallThickness
t x
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per Foot
D/t
lx Sx rx Zx
Outside Diameter Wall
Cross- Sectional
Area
14.819.723.629.539.5
14.216.419.022.825.428.438.157.1
12.917.220.623.125.834.551.7
9.367.166.024.863.66
9.007.886.885.795.224.683.532.37
8.096.205.224.694.223.182.14
96.776.465.453.741.1
85.976.468.058.252.747.936.725.1
62.449.742.638.735.227.018.6
28.122.219.015.612.0
25.923.120.517.615.914.411.17.59
20.816.614.212.911.79.026.19
1.801.801.801.801.80
1.731.731.731.731.731.731.731.73
1.571.571.571.571.571.571.57
6.875
6.625
6.000
0.5000.3750.3120.2500.188
0.5000.4320.3750.3120.2800.2500.1880.125
0.5000.3750.3120.2800.2500.1880.125
34.0726.0621.8917.7113.44
32.7428.6025.0521.0618.9917.0412.948.69
29.4022.5518.9717.1215.3711.687.85
0.4650.3490.2910.2330.174
0.4650.4020.3490.2910.2600.2330.1740.116
0.4650.3490.2910.2600.2330.1740.116
48.338.232.726.820.6
42.938.234.029.126.423.918.412.6
31.224.821.319.317.613.59.28
14.111.19.517.815.99
13.011.510.38.797.967.225.543.79
10.48.287.116.455.864.513.09
2.272.312.332.352.37
2.182.202.222.242.252.262.282.30
1.962.002.022.032.042.062.08
19.114.912.610.37.81
17.715.613.811.710.59.527.244.92
14.311.29.498.577.755.914.02
in.4 in.3 in. in.3 in.4 in.3 ft.2
Y
Y
X X
23
DIMENSIONS AND SECTION PROPERTIES OF ROUND HSS
in. in. lb. in. in.2
Nominal Size Weight per
Foot
WallThickness
t x
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per Foot
D/t
lx Sx rx Zx
Outside Diameter Wall
Cross- Sectional
Area
12.015.923.232.044.9
11.815.822.8
10.814.317.220.821.528.743.1
12.914.420.525.938.8
13.717.218.119.019.523.034.5
7.455.724.012.952.12
7.365.653.98
6.625.104.303.593.492.641.78
4.554.122.962.361.60
3.392.762.612.502.442.091.42
48.839.028.521.415.7
47.037.627.6
34.427.724.020.519.915.410.6
19.718.113.611.17.68
11.79.829.369.018.837.675.34
17.514.010.27.705.64
17.113.710.0
13.811.19.588.187.956.154.25
8.788.066.044.933.41
5.874.914.684.504.413.832.67
1.461.461.461.461.46
1.441.441.44
1.311.311.311.311.311.311.31
1.181.181.181.181.18
1.051.051.051.051.051.051.05
5.563
5.500
5.000
4.5000
4.000
0.5000.3750.2580.1880.134
0.5000.3750.258
0.5000.3750.3120.2580.2500.1880.125
0.3750.3370.2370.1880.125
0.3130.2500.2370.2260.2200.1880.125
27.0620.8014.6310.807.78
26.7320.5414.46
24.0518.5415.6413.0812.699.676.51
16.5415.0010.808.675.85
12.3410.029.539.128.897.665.18
0.4650.3490.2400.1740.124
0.4650.3490.240
0.4650.3490.2910.2400.2330.1740.116
0.3490.3130.2200.1740.116
0.2910.2330.2200.2100.2050.1740.116
24.419.514.210.77.84
23.518.813.7
17.213.912.010.29.947.695.31
9.879.076.795.543.84
5.874.914.684.504.413.832.67
8.777.025.123.852.82
8.556.845.00
6.885.554.794.083.973.082.12
4.394.033.022.461.71
2.932.452.342.252.211.921.34
.1.811.851.881.911.92
1.791.831.86
1.611.651.671.691.691.711.73
1.471.481.521.531.55
1.321.331.341.341.341.351.37
12.19.506.805.053.67
11.89.276.64
9.607.566.465.445.304.052.77
6.035.504.033.262.23
4.013.313.153.022.962.551.75
in.4 in.3 in. in.3 in.4 in.3 ft.2
Y
Y
X X
24
DIMENSIONS AND SECTION PROPERTIES OF ROUND HSS
in. in. lb. in. in.2
Nominal Size Weight per
Foot
WallThickness
t x
TorsionalStiffnessConstant
J
TorsionalShear
Constant
C
SurfaceArea
Per Foot
D/t
lx Sx rx Zx
Outside Diameter Wall
Cross- Sectional
Area
12.012.515.017.418.520.130.2
12.914.915.917.221.324.225.9
12.315.216.524.8
10.714.421.6
10.211.713.616.620.5
10.914.117.1
12.8
2.932.832.392.081.971.821.23
2.031.771.671.541.271.121.05
1.931.591.481.01
1.661.270.869
1.571.391.201.000.82
0.9430.750.624
.63
7.617.386.415.695.415.043.53
3.903.483.313.102.592.322.19
3.402.892.701.92
2.151.731.24
1.821.651.471.251.05
0.7100.5860.501
0.368
4.354.223.663.253.092.882.02
2.602.322.212.061.731.551.46
2.372.011.881.33
1.721.380.990
1.531.391.231.060.887
0.7470.6170.527
0.444
0.920.920.920.920.920.920.92
0.790.790.790.790.790.790.79
0.750.750.750.75
0.650.650.65
0.620.620.620.620.62
0.500.500.50
0.43
3.500
3.000
2.875
2.500
2.375
1.900
1.660
0.3130.3000.2500.2160.2030.1880.125
0.2500.2160.2030.1880.1520.1340.125
0.2500.2030.1880.125
0.2500.1880.125
0.2500.2180.1880.1540.125
0.1880.1450.120
0.140
10.6610.268.697.587.156.664.51
7.356.436.075.654.634.113.84
7.025.805.403.67
6.014.653.17
0.2500.2180.1880.1540.125
3.440.1452.28
0.140
0.2910.2790.2330.2010.1890.1740.116
0.2330.2010.1890.1740.1410.1240.116
0.2330.1890.1740.116
0.2330.1740.116
0.2330.2030.1740.1430.116
0.1740.1350.111
0.130
3.813.693.212.842.702.521.77
1.951.741.661.551.301.161.09
1.701.451.350.958
1.080.8650.619
0.9100.8240.7330.6270.527
0.3550.2930.251
0.184
2.182.111.831.631.541.441.01
1.301.161.101.030.8650.7740.730
1.181.010.9410.667
0.8620.6920.495
0.7660.6940.6170.5280.443
0.3740.3090.264
0.222
1.141.141.161.171.171.181.20
0.9820.9920.9961.001.011.021.02
0.9380.9520.9570.976
0.8060.8250.844
0.7620.7710.7810.7910.800
0.6130.6260.634
0.543
3.002.902.492.192.071.931.33
1.791.581.501.391.151.030.965
1.631.371.270.884
1.200.9430.660
1.070.9600.8450.7130.592
0.5200.4210.356
0.305
in.4 in.3 in. in.3 in.4 in.3 ft.2
Y
Y
X X