V. AISC 360-05 W D.1
Details
From reference (2):
Select an 8 in. W-shape, ASTM A992, to carry a dead load of 30 kips and a live load of 90 kips in tension. The member is 25 ft long. Verify the member strength by both LRFD and ASD with the bolted end connection shown. Verify that the member satisfies the recommended slenderness limit.
Result Type | Reference | STAAD.Pro | Difference | Comments |
---|---|---|---|---|
Tensile yielding ϕtPn (kips) [LRFD] | 277 | 277 | none | |
Tensile rupture ϕtPn (kips) [LRFD] | 211 | 211 | none | |
Tensile yielding Pn/Ωt (kips) [ASD] | 184 | 184 | none | |
Tensile rupture Pn/Ωt (kips) [ASD] | 141 | 141 | none | |
Slenderness ratio | 238 | 238.212 | negligible |
STAAD.Pro Input File
The file C:\Users\Public\Public Documents\STAAD.Pro 2023\Samples \Verification Models\09 Steel Design\US\AISC\AISC 360-05 W D.1.STD is typically installed with the program.
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 21-Jan-20
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 25 0 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 W8X21
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 FIXED
LOAD 1 LOADTYPE Dead TITLE LOAD CASE 1
JOINT LOAD
2 FX 30
LOAD 2 LOADTYPE Live TITLE LOAD CASE 2
JOINT LOAD
2 FX 90
LOAD COMB 3 LRFD
1 1.2 2 1.6
LOAD COMB 4 ASD
1 1.0 2 1.0
PERFORM ANALYSIS
PRINT ANALYSIS RESULTS
LOAD LIST 3
PARAMETER 1
CODE AISC UNIFIED 2005
FU 9360 ALL
FYLD 7200 ALL
METHOD LRFD
TMAIN 300 ALL
NSF 0.773 ALL
SLF 0.908 ALL
TRACK 2 ALL
CHECK CODE ALL
LOAD LIST 4
PARAMETER 2
CODE AISC UNIFIED 2005
FU 9360 ALL
FYLD 7200 ALL
METHOD ASD
TMAIN 300 ALL
NSF 0.773 ALL
SLF 0.908 ALL
TRACK 2 ALL
CHECK CODE ALL
FINISH
STAAD.Pro Output
STAAD.PRO CODE CHECKING - (AISC-360-05-LRFD) v3.3a ******************************************** ALL UNITS ARE - KIP FEET (UNLESS OTHERWISE Noted) MEMBER TABLE RESULT/ CRITICAL COND/ RATIO/ LOADING/ FX MY MZ LOCATION ======================================================================= 1 ST W8X21 (AISC SECTIONS) PASS Eq. H1-1a 0.854 3 180.00 T 0.00 0.00 0.00 |-----------------------------------------------------------------------| | SLENDERNESS | | Actual Slenderness Ratio : 238.212 L/C : 3 | | Allowable Slenderness Ratio : 300.000 LOC : 0.00 | |-----------------------------------------------------------------------| | STRENGTH CHECKS | | Critical L/C : 3 Ratio : 0.854(PASS) | | Loc : 0.00 Condition : Eq. H1-1a | |-----------------------------------------------------------------------| | DESIGN FORCES | | Fx: 1.800E+02(T ) Fy: 0.000E+00 Fz: 0.000E+00 | | Mx: 0.000E+00 My: 0.000E+00 Mz: 0.000E+00 | |-----------------------------------------------------------------------| | SECTION PROPERTIES (UNIT: INCH) | | Azz: 4.216E+00 Ayy: 2.070E+00 Cw: 1.517E+02 | | Szz: 1.819E+01 Syy: 3.708E+00 | | Izz: 7.530E+01 Iyy: 9.770E+00 Ix: 2.820E-01 | |-----------------------------------------------------------------------| | MATERIAL PROPERTIES | | Fyld: 7199.999 Fu: 9359.999 | |-----------------------------------------------------------------------| | Actual Member Length: 25.000 | | Design Parameters | | Kz: 1.00 Ky: 1.00 NSF: 0.77 SLF: 0.91 CSP: 12.00 | |-----------------------------------------------------------------------| | SECTION CLASS UNSTIFFENED / λ λp λr CASE | | STIFFENED | | Compression : Non-Slender 6.59 N/A 13.49 T.B4.1-3 | | Non-Slender 27.52 N/A 35.88 T.B4.1-10 | | Flexure : Compact 6.59 9.15 24.08 T.B4.1-1 | | Compact 27.52 90.55 137.27 T.B4.1-9 | STAAD SPACE -- PAGE NO. 7 STAAD.PRO CODE CHECKING - (AISC-360-05-LRFD) v3.3a ******************************************** ALL UNITS ARE - KIP FEET (UNLESS OTHERWISE Noted) |-----------------------------------------------------------------------| | CHECK FOR AXIAL TENSION | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Yield 1.80E+02 2.77E+02 0.649 Eq. D2-1 3 0.00 | | Rupture 1.80E+02 2.11E+02 0.854 Eq. D2-2 3 0.00 | |-----------------------------------------------------------------------| | CHECK FOR AXIAL COMPRESSION | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Maj Buck 0.00E+00 1.62E+02 0.000 Sec. E1 3 0.00 | | Min Buck 0.00E+00 2.45E+01 0.000 Eq. E3-1 3 0.00 | | Flexural | | Tor Buck 0.00E+00 1.70E+02 0.000 Eq. E4-1 3 0.00 | | Intermediate | | Results Eff Area KL/r Fcr Fe Pn | | Maj Buck 4.28E-02 85.81 4.20E+03 5.60E+03 1.80E+02 | | Min Buck 4.28E-02 238.21 6.37E+02 7.26E+02 2.72E+01 | | Flexural Ag Fcr Pn | | Tor Buck 4.28E-02 4.41E+03 1.89E+02 | |-----------------------------------------------------------------------| | CHECK FOR SHEAR | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Local-Z -0.00E+00 1.14E+02 0.000 Eq. G2-1 3 0.00 | | Local-Y 0.00E+00 6.21E+01 0.000 Eq. G2-1 3 0.00 | | Intermediate | | Results Aw Cv Kv h/tw Vn | | Local-Z 2.93E-02 1.00 1.20 6.59 1.26E+02 | | Local-Y 1.44E-02 1.00 0.00 27.52 6.21E+01 | |-----------------------------------------------------------------------| | CHECK FOR BENDING-YIELDING | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Major -0.00E+00 7.65E+01 0.000 Eq. F2-1 3 0.00 | | Minor 0.00E+00 2.13E+01 0.000 Eq. F6-1 3 0.00 | | Intermediate Mn My | | Major 8.50E+01 0.00E+00 | | Minor 2.37E+01 0.00E+00 | |-----------------------------------------------------------------------| | CHECK FOR BENDING-LATERAL TORSIONAL BUCKLING | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Major -0.00E+00 2.52E+01 0.000 Eq. F2-3 3 0.00 | | Intermediate Mn Me Cb Lp Lr Lb | | Major 2.80E+01 0.00E+00 1.00 4.45 14.75 25.00 | STAAD SPACE -- PAGE NO. 8 STAAD.PRO CODE CHECKING - (AISC-360-05-LRFD) v3.3a ******************************************** ALL UNITS ARE - KIP FEET (UNLESS OTHERWISE Noted) |-----------------------------------------------------------------------| | CHECK FOR FLEXURE TENS/COMP INTERACTION | | RATIO CRITERIA L/C LOC | | Flexure Comp 0.000 Eq. H1-1b 3 0.00 | | Flexure Tens 0.854 Eq. H1-1a 3 0.00 | | Intermediate Mcx Mrx Pc | | Mcy Mry Pr | | Flexure Comp 2.52E+01 -0.00E+00 2.45E+01 | | 2.13E+01 0.00E+00 0.00E+00 | | Flexure Tens 2.52E+01 -0.00E+00 2.11E+02 | | 2.13E+01 0.00E+00 1.80E+02 | |-----------------------------------------------------------------------| 50. LOAD LIST 4 51. PARAMETER 2 52. CODE AISC UNIFIED 2005 53. FU 9360 ALL 54. FYLD 7200 ALL 55. METHOD ASD 56. TMAIN 300 ALL 57. NSF 0.773 ALL 58. SLF 0.908 ALL 59. TRACK 2 ALL 60. CHECK CODE ALL STEEL DESIGN STAAD SPACE -- PAGE NO. 9 STAAD.PRO CODE CHECKING - ( AISC-360-05-ASD) v3.3a ******************************************** ALL UNITS ARE - KIP FEET (UNLESS OTHERWISE Noted) MEMBER TABLE RESULT/ CRITICAL COND/ RATIO/ LOADING/ FX MY MZ LOCATION ======================================================================= 1 ST W8X21 (AISC SECTIONS) PASS Eq. H1-1a 0.854 4 120.00 T 0.00 0.00 0.00 |-----------------------------------------------------------------------| | SLENDERNESS | | Actual Slenderness Ratio : 238.212 L/C : 4 | | Allowable Slenderness Ratio : 300.000 LOC : 0.00 | |-----------------------------------------------------------------------| | STRENGTH CHECKS | | Critical L/C : 4 Ratio : 0.854(PASS) | | Loc : 0.00 Condition : Eq. H1-1a | |-----------------------------------------------------------------------| | DESIGN FORCES | | Fx: 1.200E+02(T ) Fy: 0.000E+00 Fz: 0.000E+00 | | Mx: 0.000E+00 My: 0.000E+00 Mz: 0.000E+00 | |-----------------------------------------------------------------------| | SECTION PROPERTIES (UNIT: INCH) | | Azz: 4.216E+00 Ayy: 2.070E+00 Cw: 1.517E+02 | | Szz: 1.819E+01 Syy: 3.708E+00 | | Izz: 7.530E+01 Iyy: 9.770E+00 Ix: 2.820E-01 | |-----------------------------------------------------------------------| | MATERIAL PROPERTIES | | Fyld: 7199.999 Fu: 9359.999 | |-----------------------------------------------------------------------| | Actual Member Length: 25.000 | | Design Parameters | | Kz: 1.00 Ky: 1.00 NSF: 0.77 SLF: 0.91 CSP: 12.00 | |-----------------------------------------------------------------------| | SECTION CLASS UNSTIFFENED / λ λp λr CASE | | STIFFENED | | Compression : Non-Slender 6.59 N/A 13.49 T.B4.1-3 | | Non-Slender 27.52 N/A 35.88 T.B4.1-10 | | Flexure : Compact 6.59 9.15 24.08 T.B4.1-1 | | Compact 27.52 90.55 137.27 T.B4.1-9 | STAAD SPACE -- PAGE NO. 10 STAAD.PRO CODE CHECKING - ( AISC-360-05-ASD) v3.3a ******************************************** ALL UNITS ARE - KIP FEET (UNLESS OTHERWISE Noted) |-----------------------------------------------------------------------| | CHECK FOR AXIAL TENSION | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Yield 1.20E+02 1.84E+02 0.651 Eq. D2-1 4 0.00 | | Rupture 1.20E+02 1.41E+02 0.854 Eq. D2-2 4 0.00 | |-----------------------------------------------------------------------| | CHECK FOR AXIAL COMPRESSION | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Maj Buck 0.00E+00 1.08E+02 0.000 Sec. E1 4 0.00 | | Min Buck 0.00E+00 1.63E+01 0.000 Eq. E3-1 4 0.00 | | Flexural | | Tor Buck 0.00E+00 1.13E+02 0.000 Eq. E4-1 4 0.00 | | Intermediate | | Results Eff Area KL/r Fcr Fe Pn | | Maj Buck 4.28E-02 85.81 4.20E+03 5.60E+03 1.80E+02 | | Min Buck 4.28E-02 238.21 6.37E+02 7.26E+02 2.72E+01 | | Flexural Ag Fcr Pn | | Tor Buck 4.28E-02 4.41E+03 1.89E+02 | |-----------------------------------------------------------------------| | CHECK FOR SHEAR | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Local-Z -0.00E+00 7.57E+01 0.000 Eq. G2-1 4 0.00 | | Local-Y 0.00E+00 4.14E+01 0.000 Eq. G2-1 4 0.00 | | Intermediate | | Results Aw Cv Kv h/tw Vn | | Local-Z 2.93E-02 1.00 1.20 6.59 1.26E+02 | | Local-Y 1.44E-02 1.00 0.00 27.52 6.21E+01 | |-----------------------------------------------------------------------| | CHECK FOR BENDING-YIELDING | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Major -0.00E+00 5.09E+01 0.000 Eq. F2-1 4 0.00 | | Minor 0.00E+00 1.42E+01 0.000 Eq. F6-1 4 0.00 | | Intermediate Mn My | | Major 8.50E+01 0.00E+00 | | Minor 2.37E+01 0.00E+00 | |-----------------------------------------------------------------------| | CHECK FOR BENDING-LATERAL TORSIONAL BUCKLING | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Major -0.00E+00 1.68E+01 0.000 Eq. F2-3 4 0.00 | | Intermediate Mn Me Cb Lp Lr Lb | | Major 2.80E+01 0.00E+00 1.00 4.45 14.75 25.00 | STAAD SPACE -- PAGE NO. 11 STAAD.PRO CODE CHECKING - ( AISC-360-05-ASD) v3.3a ******************************************** ALL UNITS ARE - KIP FEET (UNLESS OTHERWISE Noted) |-----------------------------------------------------------------------| | CHECK FOR FLEXURE TENS/COMP INTERACTION | | RATIO CRITERIA L/C LOC | | Flexure Comp 0.000 Eq. H1-1b 4 0.00 | | Flexure Tens 0.854 Eq. H1-1a 4 0.00 | | Intermediate Mcx Mrx Pc | | Mcy Mry Pr | | Flexure Comp 1.68E+01 -0.00E+00 1.63E+01 | | 1.42E+01 0.00E+00 0.00E+00 | | Flexure Tens 1.68E+01 -0.00E+00 1.41E+02 | | 1.42E+01 0.00E+00 1.20E+02 | |-----------------------------------------------------------------------|