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US

AISC

A collection of W, M, S, HP, WT, MT, ST sections are predefined using inch as default length unit.

See Eccentricity for more details.

Syntax

To define a section, users can use the following commands.

section US2D (1) (2) (3) [4] [5] [6]
# (1) string, designation
# (2) int, unique tag
# (3) int, material model tag
# [4] double, scale, default: 1.0
# [5] int, number of integration points along web height, default: 6
# [6] double, eccentricity, default: 0.0

section US3D (1) (2) (3) [4] [5] [6] [7]
# (1) string, designation
# (2) int, unique tag
# (3) int, material model tag
# [4] double, scale, default: 1.0
# [5] int, number of integration points along web height and flange width, default: 6
# [6] double, eccentricity of y axis, default: 0.0
# [7] double, eccentricity of z axis, default: 0.0

[available from v3.2]

Some T-sections are placed at the centre of the web, which is not always desired. Use US2DC and US3DC to automatically recenter the section to its barycenter.

section US2DC (1) (2) (3) [4] [5]
section US3DC (1) (2) (3) [4] [5]
# (1) string, designation
# (2) int, unique tag
# (3) int, material model tag
# [4] double, scale, default: 1.0
# [5] int, number of integration points along web height (and flange width for 3D), default: 6

Remarks

  1. By default, inch is used as length unit, if users want to switch to another unit, set scale to corresponding values. For example, to use millimeter, scale=25.4.

  2. For 2D sections, the number of integration points is set to two using Gauss quadrature for flange.

  3. For 3D sections, along web/flange thickness, one integration point is used. along flange width and web height, the same number of integration points is used as defined by user.

Supported Designations

WTWTWWMT & STM & SHP

WT22X167.5

WT9X155.5

W44X335

W18X311

MT6.25X6.2

M12.5X12.4

HP18X204

WT22X145

WT9X141.5

W44X290

W18X283

MT6.25X5.8

M12.5X11.6

HP18X181

WT22X131

WT9X129

W44X262

W18X258

MT6X5.9

M12X11.8

HP18X157

WT22X115

WT9X117

W44X230

W18X234

MT6X5.4

M12X10.8

HP18X135

WT20X327.5

WT9X105.5

W40X655

W18X211

MT6X5

M12X10

HP16X183

WT20X296.5

WT9X96

W40X593

W18X192

MT5X4.5

M10X9

HP16X162

WT20X251.5

WT9X87.5

W40X503

W18X175

MT5X4

M10X8

HP16X141

WT20X215.5

WT9X79

W40X431

W18X158

MT5X3.75

M10X7.5

HP16X121

WT20X198.5

WT9X71.5

W40X397

W18X143

MT4X3.25

M8X6.5

HP16X101

WT20X186

WT9X65

W40X372

W18X130

MT4X3.1

M8X6.2

HP16X88

WT20X181

WT9X59.5

W40X362

W18X119

MT3X2.2

M6X4.4

HP14X117

WT20X162

WT9X53

W40X324

W18X106

MT3X1.85

M6X3.7

HP14X102

WT20X148.5

WT9X48.5

W40X297

W18X97

MT2.5X9.45

M5X18.9

HP14X89

WT20X138.5

WT9X43

W40X277

W18X86

MT2X3

M4X6

HP14X73

WT20X124.5

WT9X38

W40X249

W18X76

ST12X60.5

M4X4.08

HP12X89

WT20X107.5

WT9X35.5

W40X215

W18X71

ST12X53

M4X3.45

HP12X84

WT20X99.5

WT9X32.5

W40X199

W18X65

ST12X50

M4X3.2

HP12X74

WT20X196

WT9X30

W40X392

W18X60

ST12X45

M3X2.9

HP12X63

WT20X165.5

WT9X27.5

W40X331

W18X55

ST12X40

S24X121

HP12X53

WT20X163.5

WT9X25

W40X327

W18X50

ST10X48

S24X106

HP10X57

WT20X147

WT9X23

W40X294

W18X46

ST10X43

S24X100

HP10X42

WT20X139

WT9X20

W40X278

W18X40

ST10X37.5

S24X90

HP8X36

WT20X132

WT9X17.5

W40X264

W18X35

ST10X33

S24X80

WT20X117.5

WT8X50

W40X235

W16X100

ST9X35

S20X96

WT20X105.5

WT8X44.5

W40X211

W16X89

ST9X27.35

S20X86

WT20X91.5

WT8X38.5

W40X183

W16X77

ST7.5X25

S20X75

WT20X83.5

WT8X33.5

W40X167

W16X67

ST7.5X21.45

S20X66

WT20X74.5

WT8X28.5

W40X149

W16X57

ST6X25

S18X70

WT18X462.5

WT8X25

W36X925

W16X50

ST6X20.4

S18X54.7

WT18X426.5

WT8X22.5

W36X853

W16X45

ST6X17.5

S15X50

WT18X401

WT8X20

W36X802

W16X40

ST6X15.9

S15X42.9

WT18X361.5

WT8X18

W36X723

W16X36

ST5X17.5

S12X50

WT18X326

WT8X15.5

W36X652

W16X31

ST5X12.7

S12X40.8

WT18X264.5

WT8X13

W36X529

W16X26

ST4X11.5

S12X35

WT18X243.5

WT7X436.5

W36X487

W14X873

ST4X9.2

S12X31.8

WT18X220.5

WT7X404

W36X441

W14X808

ST3X8.6

S10X35

WT18X197.5

WT7X365

W36X395

W14X730

ST3X6.25

S10X25.4

WT18X180.5

WT7X332.5

W36X361

W14X665

ST2.5X5

S8X23

WT18X165

WT7X302.5

W36X330

W14X605

ST2X4.75

S8X18.4

WT18X151

WT7X275

W36X302

W14X550

ST2X3.85

S6X17.25

WT18X141

WT7X250

W36X282

W14X500

ST1.5X3.75

S6X12.5

WT18X131

WT7X227.5

W36X262

W14X455

ST1.5X2.85

S5X10

WT18X123.5

WT7X213

W36X247

W14X426

S4X9.5

WT18X115.5

WT7X199

W36X231

W14X398

S4X7.7

WT18X128

WT7X185

W36X256

W14X370

S3X7.5

WT18X116

WT7X171

W36X232

W14X342

S3X5.7

WT18X105

WT7X155.5

W36X210

W14X311

WT18X97

WT7X141.5

W36X194

W14X283

WT18X91

WT7X128.5

W36X182

W14X257

WT18X85

WT7X116.5

W36X170

W14X233

WT18X80

WT7X105.5

W36X160

W14X211

WT18X75

WT7X96.5

W36X150

W14X193

WT18X67.5

WT7X88

W36X135

W14X176

WT16.5X193.5

WT7X79.5

W33X387

W14X159

WT16.5X177

WT7X72.5

W33X354

W14X145

WT16.5X159

WT7X66

W33X318

W14X132

WT16.5X145.5

WT7X60

W33X291

W14X120

WT16.5X131.5

WT7X54.5

W33X263

W14X109

WT16.5X120.5

WT7X49.5

W33X241

W14X99

WT16.5X110.5

WT7X45

W33X221

W14X90

WT16.5X100.5

WT7X41

W33X201

W14X82

WT16.5X84.5

WT7X37

W33X169

W14X74

WT16.5X76

WT7X34

W33X152

W14X68

WT16.5X70.5

WT7X30.5

W33X141

W14X61

WT16.5X65

WT7X26.5

W33X130

W14X53

WT16.5X59

WT7X24

W33X118

W14X48

WT15X195.5

WT7X21.5

W30X391

W14X43

WT15X178.5

WT7X19

W30X357

W14X38

WT15X163

WT7X17

W30X326

W14X34

WT15X146

WT7X15

W30X292

W14X30

WT15X130.5

WT7X13

W30X261

W14X26

WT15X117.5

WT7X11

W30X235

W14X22

WT15X105.5

WT6X168

W30X211

W12X336

WT15X95.5

WT6X152.5

W30X191

W12X305

WT15X86.5

WT6X139.5

W30X173

W12X279

WT15X74

WT6X126

W30X148

W12X252

WT15X66

WT6X115

W30X132

W12X230

WT15X62

WT6X105

W30X124

W12X210

WT15X58

WT6X95

W30X116

W12X190

WT15X54

WT6X85

W30X108

W12X170

WT15X49.5

WT6X76

W30X99

W12X152

WT15X45

WT6X68

W30X90

W12X136

WT13.5X269.5

WT6X60

W27X539

W12X120

WT13.5X184

WT6X53

W27X368

W12X106

WT13.5X168

WT6X48

W27X336

W12X96

WT13.5X153.5

WT6X43.5

W27X307

W12X87

WT13.5X140.5

WT6X39.5

W27X281

W12X79

WT13.5X129

WT6X36

W27X258

W12X72

WT13.5X117.5

WT6X32.5

W27X235

W12X65

WT13.5X108.5

WT6X29

W27X217

W12X58

WT13.5X97

WT6X26.5

W27X194

W12X53

WT13.5X89

WT6X25

W27X178

W12X50

WT13.5X80.5

WT6X22.5

W27X161

W12X45

WT13.5X73

WT6X20

W27X146

W12X40

WT13.5X64.5

WT6X17.5

W27X129

W12X35

WT13.5X57

WT6X15

W27X114

W12X30

WT13.5X51

WT6X13

W27X102

W12X26

WT13.5X47

WT6X11

W27X94

W12X22

WT13.5X42

WT6X9.5

W27X84

W12X19

WT12X185

WT6X8

W24X370

W12X16

WT12X167.5

WT6X7

W24X335

W12X14

WT12X153

WT5X56

W24X306

W10X112

WT12X139.5

WT5X50

W24X279

W10X100

WT12X125

WT5X44

W24X250

W10X88

WT12X114.5

WT5X38.5

W24X229

W10X77

WT12X103.5

WT5X34

W24X207

W10X68

WT12X96

WT5X30

W24X192

W10X60

WT12X88

WT5X27

W24X176

W10X54

WT12X81

WT5X24.5

W24X162

W10X49

WT12X73

WT5X22.5

W24X146

W10X45

WT12X65.5

WT5X19.5

W24X131

W10X39

WT12X58.5

WT5X16.5

W24X117

W10X33

WT12X52

WT5X15

W24X104

W10X30

WT12X51.5

WT5X13

W24X103

W10X26

WT12X47

WT5X11

W24X94

W10X22

WT12X42

WT5X9.5

W24X84

W10X19

WT12X38

WT5X8.5

W24X76

W10X17

WT12X34

WT5X7.5

W24X68

W10X15

WT12X31

WT5X6

W24X62

W10X12

WT12X27.5

WT4X33.5

W24X55

W8X67

WT10.5X137.5

WT4X29

W21X275

W8X58

WT10.5X124

WT4X24

W21X248

W8X48

WT10.5X111.5

WT4X20

W21X223

W8X40

WT10.5X100.5

WT4X17.5

W21X201

W8X35

WT10.5X91

WT4X15.5

W21X182

W8X31

WT10.5X83

WT4X14

W21X166

W8X28

WT10.5X73.5

WT4X12

W21X147

W8X24

WT10.5X66

WT4X10.5

W21X132

W8X21

WT10.5X61

WT4X9

W21X122

W8X18

WT10.5X55.5

WT4X7.5

W21X111

W8X15

WT10.5X50.5

WT4X6.5

W21X101

W8X13

WT10.5X46.5

WT4X5

W21X93

W8X10

WT10.5X41.5

WT3X12.5

W21X83

W6X25

WT10.5X36.5

WT3X10

W21X73

W6X20

WT10.5X34

WT3X7.5

W21X68

W6X15

WT10.5X31

WT3X8

W21X62

W6X16

WT10.5X27.5

WT3X6

W21X55

W6X12

WT10.5X24

WT3X4.5

W21X48

W6X9

WT10.5X28.5

WT3X4.25

W21X57

W6X8.5

WT10.5X25

WT2.5X9.5

W21X50

W5X19

WT10.5X22

WT2.5X8

W21X44

W5X16

WT2X6.5

W4X13

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