V.AISC 360-16 Pipe E.11
Verify the available compressive strength of a pipe section per the AISC 360-16 code.
Details
From reference 2:
Select an ASTM A53 Grade B Pipe compression member with a length of 30 ft to support a dead load of 35 kips and live load of 105 kips in axial compression. The column is pin-connected at the ends in both axes and braced at the midpoint in the y-y direction.
ASTM A572 Grade 50: Fy = 35 ksi
STAAD.Pro Input File
The file C:\Users\Public\Public Documents\STAAD.Pro CONNECT Edition\Samples\ Verification Models\09 Steel Design\US\AISC\AISC 360-16 Pipe E.STD is typically installed with the program.
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 05-Feb-19
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 0 30 0;
MEMBER INCIDENCES
1 1 2;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+06
POISSON 0.3
DENSITY 0.489024
ALPHA 6.5e-06
DAMP 0.03
TYPE STEEL
STRENGTH RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 TABLE ST PIPS100
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 PINNED
2 FIXED BUT FY MX MZ
LOAD 1 LOADTYPE None TITLE LOAD CASE 1
JOINT LOAD
2 FY -35
LOAD 2 LOADTYPE None TITLE LOAD CASE 2
JOINT LOAD
2 FY -105
LOAD COMB 3 COMBINATION LOAD CASE 3
1 1.2 2 1.6
LOAD COMB 4 COMBINATION LOAD CASE 4
1 1.0 2 1.0
PERFORM ANALYSIS
PRINT ANALYSIS RESULTS
UNIT INCHES KIP
LOAD LIST 3
PARAMETER 1
CODE AISC UNIFIED 2016
LY 180 ALL
METHOD LRFD
SGR 2 ALL
TRACK 2 ALL
CHECK CODE ALL
LOAD LIST 4
PARAMETER 2
CODE AISC UNIFIED 2016
LY 180 ALL
METHOD ASD
SGR 2 ALL
TRACK 2 ALL
CHECK CODE ALL
FINISH
STAAD.Pro Output
STAAD.PRO CODE CHECKING - AISC 360-16 LRFD (V1.2) ***************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). ***NOTE : AISC 360-16 Design Statement for STAAD.Pro. *** AXIS CONVENTION ***: ======================== The capacity results and intermediate results in the report follow the notations and axes labels as defined in the AISC 360-16 code. The analysis results are reported in STAAD.Pro axis convention and the AISC 360:16 design results are reported in AISC 360-16 code axis convention. AISC Spec. STAAD.Pro Description ------------ ----------- ------------- X Z Axis typically parallel to the sections principal major axis. Y Y Axis typically parallel to the sections principal minor axis. Z X Longitudinal axis perpendicular to the cross section. SECTION FORCES AXIS MAPPING: - AISC Spec. STAAD.Pro Description ------------ ----------- ------------- Pz FX Axial force. Vy FY Shear force along minor axis. Vx FZ Shear force along major axis. Tz MX Torsional moment. My MY Bending moment about minor axis. Mx MZ Bending moment about major axis. *** DESIGN MESSAGES ***: ======================= 1. Section classification reported is for the cross section and loadcase that produced the worst case design ratio for flexure/compression Capacity results. 2. Results for any Capacity/Check that is not relevant for a section/loadcase based on the code clause in AISC 360-16 will not be shown in the report. 3. Bending results are reported as being �about� the relevant axis (X/Y), while the results for shear are reported as being for shear forces �along� the axis. E.g : Mx indicates bending about the X axis, while Vx indicates shear along the X axis. *** ABBREVIATIONS ***: ====================== F-T-B = Flexural-Torsional Buckling L-T-B = Lateral-Torsional Buckling F-L-B = Flange Local Buckling W-L-B = Web Local Buckling L-L-B = Leg Local Buckling C-F-Y = Compression Flange Yielding T-F-Y = Tension Flange Yielding STAAD SPACE -- PAGE NO. 7 STAAD.PRO CODE CHECKING - AISC 360-16 LRFD (V1.2) ***************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 |-----------------------------------------------------------------------------| | Member No: 1 Profile: ST PIPS100 (AISC SECTIONS)| | Status: PASS Ratio: 0.961 Loadcase: 3 | | Location: 0.00 Ref: Cl.E3 | | Pz: 210.0 C Vy: 0.000 Vx: 0.000 | | Tz: 0.000 My: 0.000 Mx: 0.000 | |-----------------------------------------------------------------------------| | COMPRESSION SLENDERNESS | | Actual Slenderness Ratio : 99.349 | | Allowable Slenderness Ratio : 200.000 LOC : 0.00 | |-----------------------------------------------------------------------------| | STRENGTH CHECKS | | Critical L/C : 3 Ratio : 0.961(PASS) | | Loc : 0.00 Condition : Cl.E3 | |-----------------------------------------------------------------------------| | SECTION PROPERTIES (LOC: 0.00, PROPERTIES UNIT: IN ) | | Ag : 1.150E+01 Axx : 0.000E+00 Ayy : 0.000E+00 | | Ixx : 1.510E+02 Iyy : 1.510E+02 J : 3.020E+02 | | Sxx+: 2.809E+01 Sxx-: 2.809E+01 Zxx : 3.690E+01 | | Syy+: 2.809E+01 Syy-: 2.809E+01 Zyy : 3.690E+01 | | Cw : 0.000E+00 x0 : 0.000E+00 y0 : 0.000E+00 | |-----------------------------------------------------------------------------| | MATERIAL PROPERTIES | | Fyld: 35.000 Fu: 60.000 | |-----------------------------------------------------------------------------| | Actual Member Length: 360.000 | | Design Parameters (Rolled) | | Kx: 1.00 Ky: 1.00 NSF: 1.00 SLF: 1.00 CSP: 12.00 | |-----------------------------------------------------------------------------| | COMPRESSION CLASSIFICATION (L/C: 3 LOC: 360.00) | | λ λp λr CASE | | Flange: NonSlender 31.62 N/A 91.14 Table.B4.1a.Case9 | | Web : NonSlender 31.62 N/A 91.14 Table.B4.1a.Case9 | | | | FLEXURE CLASSIFICATION (L/C: 3 LOC: 360.00) | | λ λp λr CASE | | Flange: Compact 31.62 58.00 256.86 Table.B4.1b.Case20 | | Web : Compact 31.62 58.00 256.86 Table.B4.1b.Case20 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 8 STAAD.PRO CODE CHECKING - AISC 360-16 LRFD (V1.2) ***************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR AXIAL TENSION | |-----------------------------------------------------------------------------| | TENSILE YIELDING | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 362.2 0.000 Cl.D2 3 0.00 | | | | Intermediate Results : | | Nom. Ten. Yld Cap : Pn = 402.50 kip Eq.D2-1 | |-----------------------------------------------------------------------------| | TENSILE RUPTURE | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 517.5 0.000 Cl.D2 3 0.00 | | | | Intermediate Results : | | Effective area : Ae = 11.500 in2 Eq.D3-1 | | Nom. Ten. Rpt Cap : Pn = 690.00 kip Eq.D2-2 | |-----------------------------------------------------------------------------| | CHECKS FOR AXIAL COMPRESSION | |-----------------------------------------------------------------------------| | FLEXURAL BUCKLING X | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 210.0 218.6 0.961 Cl.E3 3 0.00 | | | | Intermediate Results : | | Effective Slenderness : Lcx/rx = 99.349 Cl.E2 | | Elastic Buckling Stress : Fex = 28.998 ksi Eq.E3-4 | | Crit. Buckling Stress : Fcrx = 21.119 ksi Eq.E3-2 | | Nom. Flexural Buckling : Pnx = 242.87 kip Eq.E3-1 | |-----------------------------------------------------------------------------| | FLEXURAL BUCKLING Y | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 210.0 319.3 0.658 Cl.E3 3 0.00 | | | | Intermediate Results : | | Effective Slenderness : Lcy/ry = 49.674 Cl.E2 | | Elastic Buckling Stress : Fey = 115.99 ksi Eq.E3-4 | | Crit. Buckling Stress : Fcry = 30.847 ksi Eq.E3-2 | | Nom. Flexural Buckling : Pny = 354.75 kip Eq.E3-1 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 9 STAAD.PRO CODE CHECKING - AISC 360-16 LRFD (V1.2) ***************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR SHEAR | |-----------------------------------------------------------------------------| | SHEAR ALONG X | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 108.7 0.000 Cl.G1 3 0.00 | | | | Intermediate Results : | | Nom. Shear Along X : Vnx = 120.75 kip Eq.G5-1 | | Crit. Stress Fcr Along X : Fcrx = 21.000 ksi Eq.G5-2 | |-----------------------------------------------------------------------------| | SHEAR ALONG Y | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 108.7 0.000 Cl.G1 3 0.00 | | | | Intermediate Results : | | Nom. Shear Along Y : Vny = 120.75 kip Eq.G5-1 | | Crit. Stress Fcr Along Y : Fcrx = 21.000 ksi Eq.G5-2 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 10 STAAD.PRO CODE CHECKING - AISC 360-16 LRFD (V1.2) ***************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR BENDING | |-----------------------------------------------------------------------------| | FLEXURAL YIELDING (X) | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 1162. 0.000 Cl.F8.1 3 0.00 | | | | Intermediate Results : | | Nom Flex Yielding Along X : Mnx = 1291.5 kip-in Eq.F8-1 | |-----------------------------------------------------------------------------| | FLEXURAL YIELDING (Y) | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 1162. 0.000 Cl.F8.1 3 0.00 | | | | Intermediate Results : | | Nom Flex Yielding Along Y : Mny = 1291.5 kip-in Eq.F8-1 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 11 STAAD.PRO CODE CHECKING - AISC 360-16 LRFD (V1.2) ***************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR AXIAL BEND INTERACTION | |-----------------------------------------------------------------------------| | COMBINED FORCES CLAUSE H1 | | RATIO CRITERIA L/C LOC | | 0.961 Eq.H1-1a 3 0.00 | | | | Intermediate Results : | | Axial Capacity : Pc = 218.58 kip Cl.H1.1 | | Moment Capacity : Mcx = 1162.4 kip-in Cl.H1.1 | | Moment Capacity : Mcy = 1162.4 kip-in Cl.H1.1 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 12 STAAD.PRO CODE CHECKING - AISC 360-16 LRFD (V1.2) ***************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR TORSION | |-----------------------------------------------------------------------------| | TORSION CAPACITY | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 1094. 0.000 Cl.H3.1 3 0.00 | | | | Intermediate Results : | | Crit. Stress. Fcr : Fcr = 21.000 ksi Cl.H3.1(a) | | Nom. Strength : Tn = 1215.4 kip-in Eq.H3-1 | |-----------------------------------------------------------------------------| 49. LOAD LIST 4 50. PARAMETER 2 51. CODE AISC UNIFIED 2016 52. LY 180 ALL 53. METHOD ASD 54. SGR 2 ALL 55. TRACK 2 ALL 56. CHECK CODE ALL PARAMETER 2 STAAD SPACE -- PAGE NO. 13 STAAD.PRO CODE CHECKING - AISC 360-16 ASD (V1.2) **************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). ***NOTE : AISC 360-16 Design Statement for STAAD.Pro. *** AXIS CONVENTION ***: ======================== The capacity results and intermediate results in the report follow the notations and axes labels as defined in the AISC 360-16 code. The analysis results are reported in STAAD.Pro axis convention and the AISC 360:16 design results are reported in AISC 360-16 code axis convention. AISC Spec. STAAD.Pro Description ------------ ----------- ------------- X Z Axis typically parallel to the sections principal major axis. Y Y Axis typically parallel to the sections principal minor axis. Z X Longitudinal axis perpendicular to the cross section. SECTION FORCES AXIS MAPPING: - AISC Spec. STAAD.Pro Description ------------ ----------- ------------- Pz FX Axial force. Vy FY Shear force along minor axis. Vx FZ Shear force along major axis. Tz MX Torsional moment. My MY Bending moment about minor axis. Mx MZ Bending moment about major axis. *** DESIGN MESSAGES ***: ======================= 1. Section classification reported is for the cross section and loadcase that produced the worst case design ratio for flexure/compression Capacity results. 2. Results for any Capacity/Check that is not relevant for a section/loadcase based on the code clause in AISC 360-16 will not be shown in the report. 3. Bending results are reported as being �about� the relevant axis (X/Y), while the results for shear are reported as being for shear forces �along� the axis. E.g : Mx indicates bending about the X axis, while Vx indicates shear along the X axis. *** ABBREVIATIONS ***: ====================== F-T-B = Flexural-Torsional Buckling L-T-B = Lateral-Torsional Buckling F-L-B = Flange Local Buckling W-L-B = Web Local Buckling L-L-B = Leg Local Buckling C-F-Y = Compression Flange Yielding T-F-Y = Tension Flange Yielding STAAD SPACE -- PAGE NO. 14 STAAD.PRO CODE CHECKING - AISC 360-16 ASD (V1.2) **************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 |-----------------------------------------------------------------------------| | Member No: 1 Profile: ST PIPS100 (AISC SECTIONS)| | Status: PASS Ratio: 0.963 Loadcase: 4 | | Location: 0.00 Ref: Cl.E3 | | Pz: 140.0 C Vy: 0.000 Vx: 0.000 | | Tz: 0.000 My: 0.000 Mx: 0.000 | |-----------------------------------------------------------------------------| | COMPRESSION SLENDERNESS | | Actual Slenderness Ratio : 99.349 | | Allowable Slenderness Ratio : 200.000 LOC : 0.00 | |-----------------------------------------------------------------------------| | STRENGTH CHECKS | | Critical L/C : 4 Ratio : 0.963(PASS) | | Loc : 0.00 Condition : Cl.E3 | |-----------------------------------------------------------------------------| | SECTION PROPERTIES (LOC: 0.00, PROPERTIES UNIT: IN ) | | Ag : 1.150E+01 Axx : 0.000E+00 Ayy : 0.000E+00 | | Ixx : 1.510E+02 Iyy : 1.510E+02 J : 3.020E+02 | | Sxx+: 2.809E+01 Sxx-: 2.809E+01 Zxx : 3.690E+01 | | Syy+: 2.809E+01 Syy-: 2.809E+01 Zyy : 3.690E+01 | | Cw : 0.000E+00 x0 : 0.000E+00 y0 : 0.000E+00 | |-----------------------------------------------------------------------------| | MATERIAL PROPERTIES | | Fyld: 35.000 Fu: 60.000 | |-----------------------------------------------------------------------------| | Actual Member Length: 360.000 | | Design Parameters (Rolled) | | Kx: 1.00 Ky: 1.00 NSF: 1.00 SLF: 1.00 CSP: 12.00 | |-----------------------------------------------------------------------------| | COMPRESSION CLASSIFICATION (L/C: 4 LOC: 360.00) | | λ λp λr CASE | | Flange: NonSlender 31.62 N/A 91.14 Table.B4.1a.Case9 | | Web : NonSlender 31.62 N/A 91.14 Table.B4.1a.Case9 | | | | FLEXURE CLASSIFICATION (L/C: 4 LOC: 360.00) | | λ λp λr CASE | | Flange: Compact 31.62 58.00 256.86 Table.B4.1b.Case20 | | Web : Compact 31.62 58.00 256.86 Table.B4.1b.Case20 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 15 STAAD.PRO CODE CHECKING - AISC 360-16 ASD (V1.2) **************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR AXIAL TENSION | |-----------------------------------------------------------------------------| | TENSILE YIELDING | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 241.0 0.000 Cl.D2 4 0.00 | | | | Intermediate Results : | | Nom. Ten. Yld Cap : Pn = 402.50 kip Eq.D2-1 | |-----------------------------------------------------------------------------| | TENSILE RUPTURE | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 345.0 0.000 Cl.D2 4 0.00 | | | | Intermediate Results : | | Effective area : Ae = 11.500 in2 Eq.D3-1 | | Nom. Ten. Rpt Cap : Pn = 690.00 kip Eq.D2-2 | |-----------------------------------------------------------------------------| | CHECKS FOR AXIAL COMPRESSION | |-----------------------------------------------------------------------------| | FLEXURAL BUCKLING X | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 140.0 145.4 0.963 Cl.E3 4 0.00 | | | | Intermediate Results : | | Effective Slenderness : Lcx/rx = 99.349 Cl.E2 | | Elastic Buckling Stress : Fex = 28.998 ksi Eq.E3-4 | | Crit. Buckling Stress : Fcrx = 21.119 ksi Eq.E3-2 | | Nom. Flexural Buckling : Pnx = 242.87 kip Eq.E3-1 | |-----------------------------------------------------------------------------| | FLEXURAL BUCKLING Y | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 140.0 212.4 0.659 Cl.E3 4 0.00 | | | | Intermediate Results : | | Effective Slenderness : Lcy/ry = 49.674 Cl.E2 | | Elastic Buckling Stress : Fey = 115.99 ksi Eq.E3-4 | | Crit. Buckling Stress : Fcry = 30.847 ksi Eq.E3-2 | | Nom. Flexural Buckling : Pny = 354.75 kip Eq.E3-1 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 16 STAAD.PRO CODE CHECKING - AISC 360-16 ASD (V1.2) **************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR SHEAR | |-----------------------------------------------------------------------------| | SHEAR ALONG X | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 72.31 0.000 Cl.G1 4 0.00 | | | | Intermediate Results : | | Nom. Shear Along X : Vnx = 120.75 kip Eq.G5-1 | | Crit. Stress Fcr Along X : Fcrx = 21.000 ksi Eq.G5-2 | |-----------------------------------------------------------------------------| | SHEAR ALONG Y | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 72.31 0.000 Cl.G1 4 0.00 | | | | Intermediate Results : | | Nom. Shear Along Y : Vny = 120.75 kip Eq.G5-1 | | Crit. Stress Fcr Along Y : Fcrx = 21.000 ksi Eq.G5-2 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 17 STAAD.PRO CODE CHECKING - AISC 360-16 ASD (V1.2) **************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR BENDING | |-----------------------------------------------------------------------------| | FLEXURAL YIELDING (X) | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 773.4 0.000 Cl.F8.1 4 0.00 | | | | Intermediate Results : | | Nom Flex Yielding Along X : Mnx = 1291.5 kip-in Eq.F8-1 | |-----------------------------------------------------------------------------| | FLEXURAL YIELDING (Y) | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 773.4 0.000 Cl.F8.1 4 0.00 | | | | Intermediate Results : | | Nom Flex Yielding Along Y : Mny = 1291.5 kip-in Eq.F8-1 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 18 STAAD.PRO CODE CHECKING - AISC 360-16 ASD (V1.2) **************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR AXIAL BEND INTERACTION | |-----------------------------------------------------------------------------| | COMBINED FORCES CLAUSE H1 | | RATIO CRITERIA L/C LOC | | 0.963 Eq.H1-1a 4 0.00 | | | | Intermediate Results : | | Axial Capacity : Pc = 145.43 kip Cl.H1.1 | | Moment Capacity : Mcx = 773.35 kip-in Cl.H1.1 | | Moment Capacity : Mcy = 773.35 kip-in Cl.H1.1 | |-----------------------------------------------------------------------------| STAAD SPACE -- PAGE NO. 19 STAAD.PRO CODE CHECKING - AISC 360-16 ASD (V1.2) **************************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted). - Member : 1 Contd. |-----------------------------------------------------------------------------| | CHECKS FOR TORSION | |-----------------------------------------------------------------------------| | TORSION CAPACITY | | DEMAND CAPACITY RATIO REFERENCE L/C LOC | | 0.000 727.8 0.000 Cl.H3.1 4 0.00 | | | | Intermediate Results : | | Crit. Stress. Fcr : Fcr = 21.000 ksi Cl.H3.1(a) | | Nom. Strength : Tn = 1215.4 kip-in Eq.H3-1 | |-----------------------------------------------------------------------------|