V. AISC 360-05 Double L E.6
Details
From reference (2):
Determine if a 2L5×3×1/4 LLBB (3/4-in. separation) strut with a length of 8 ft and pinned ends has sufficient available strength to support a dead load of 10 kips and live load of 30 kips in axial compression. Also, calculate the required number of fully tightened or welded intermediate connectors.
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 Double L E.6.STD is typically installed with the program.
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 5-Dec-12
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 8 0; 2 0 0 0;
MEMBER INCIDENCES
1 1 2;
MEMBER PROPERTY AMERICAN
1 TABLE LD L50304 SP 0.0625
UNIT INCHES KIP
DEFINE MATERIAL START
ISOTROPIC MATERIAL1
E 29000
POISSON 0.3
ISOTROPIC STEEL
E 29000
POISSON 0.3
DENSITY 0.000283
ALPHA 6e-06
DAMP 0.03
TYPE STEEL
STRENGTH FY 36 FU 58 RY 1.5 RT 1.2
ISOTROPIC STEEL_36_KSI
E 29000
POISSON 0.3
DENSITY 0.000283
ALPHA 6.5e-06
DAMP 0.03
TYPE STEEL
STRENGTH FY 36 FU 58 RY 1.5 RT 1.2
ISOTROPIC STEEL_50_KSI
E 29000
POISSON 0.3
DENSITY 0.000283
ALPHA 6.5e-06
DAMP 0.03
TYPE STEEL
STRENGTH FY 50 FU 62 RY 1.5 RT 1.2
END DEFINE MATERIAL
UNIT FEET KIP
CONSTANTS
MATERIAL STEEL_50_KSI ALL
SUPPORTS
2 PINNED
1 FIXED BUT FY MX MZ
LOAD 1 LOADTYPE None TITLE LOAD CASE 1
JOINT LOAD
1 FY -10
LOAD 2 LOADTYPE None TITLE LOAD CASE 2
JOINT LOAD
1 FY -30
LOAD COMB 3 ULTIMATE LOADS
1 1.2 2 1.6
LOAD COMB 4 SERVICE LOADS
1 1.0 2 1.0
PERFORM ANALYSIS
UNIT INCHES KIP
LOAD LIST 3
PARAMETER 1
CODE AISC UNIFIED 2005
METHOD LRFD
FU 58 ALL
FYLD 36 ALL
CSPACING 32 ALL
TRACK 2 ALL
CHECK CODE ALL
LOAD LIST 4
PARAMETER 2
CODE AISC UNIFIED 2005
METHOD ASD
FU 58 ALL
FYLD 36 ALL
CSPACING 32 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 INCH (UNLESS OTHERWISE Noted) MEMBER TABLE RESULT/ CRITICAL COND/ RATIO/ LOADING/ FX MY MZ LOCATION ======================================================================= 1 LD L50304 (AISC SECTIONS) PASS Eq. H2-1 0.945 3 60.00 C 0.00 0.00 0.00 |-----------------------------------------------------------------------| | SLENDERNESS | | Actual Slenderness Ratio : 78.939 L/C : 3 | | Allowable Slenderness Ratio : 200.000 LOC : 0.00 | |-----------------------------------------------------------------------| | STRENGTH CHECKS | | Critical L/C : 3 Ratio : 0.945(PASS) | | Loc : 0.00 Condition : Eq. H2-1 | |-----------------------------------------------------------------------| | DESIGN FORCES | | Fx: 6.000E+01(C ) 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: 1.500E+00 Ayy: 1.250E+00 Cw: 0.000E+00 | | Szz: 3.055E+00 Syy: 2.075E+00 | | Izz: 1.022E+01 Iyy: 7.003E+00 Ix: 8.083E-02 | |-----------------------------------------------------------------------| | MATERIAL PROPERTIES | | Fyld: 36.000 Fu: 58.000 | |-----------------------------------------------------------------------| | Actual Member Length: 96.000 | | Design Parameters | | Kz: 1.00 Ky: 1.00 NSF: 1.00 SLF: 1.00 CSP: 32.00 | |-----------------------------------------------------------------------| | SECTION CLASS UNSTIFFENED / λ λp λr CASE | | STIFFENED | | Compression : Slender 20.00 N/A 12.77 T.B4.1-5 | | N/A N/A N/A N/A N/A | | Flexure : Non-Compact 20.00 15.33 25.83 T.B4.1-6 | | N/A N/A N/A N/A N/A | STAAD SPACE -- PAGE NO. 4 STAAD.PRO CODE CHECKING - (AISC-360-05-LRFD) v3.3a ******************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted) |-----------------------------------------------------------------------| | CHECK FOR AXIAL TENSION | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Yield 0.00E+00 1.26E+02 0.000 Eq. D2-1 3 0.00 | | Rupture 0.00E+00 1.69E+02 0.000 Eq. D2-2 3 0.00 | |-----------------------------------------------------------------------| | CHECK FOR AXIAL COMPRESSION | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Maj Buck 6.00E+01 8.72E+01 0.688 Sec. E1 3 0.00 | | Min Buck 6.00E+01 8.09E+01 0.742 Eq. E7-1 3 0.00 | | Flexural | | Tor Buck 6.00E+01 6.35E+01 0.945 Eq. E7-1 3 0.00 | | Intermediate | | Results Eff Area KL/r Fcr Fe Pn | | Maj Buck 3.88E+00 59.15 2.50E+01 8.18E+01 9.69E+01 | | Min Buck 3.88E+00 72.59 2.32E+01 5.43E+01 8.99E+01 | | Flexural Ag Fcr Pn | | Tor Buck 3.88E+00 1.82E+01 7.05E+01 | |-----------------------------------------------------------------------| | CHECK FOR SHEAR | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Local-Z -0.00E+00 2.92E+01 0.000 Eq. G2-1 3 0.00 | | Local-Y 0.00E+00 2.43E+01 0.000 Eq. G2-1 3 0.00 | | Intermediate | | Results Aw Cv Kv h/tw Vn | | Local-Z 1.50E+00 1.00 1.20 12.00 3.24E+01 | | Local-Y 1.25E+00 1.00 1.20 20.00 2.70E+01 | |-----------------------------------------------------------------------| | CHECK FOR BENDING-YIELDING | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Major -0.00E+00 1.58E+02 0.000 Eq. F9-1 3 0.00 | | Minor 0.00E+00 1.08E+02 0.000 Eq. F6-1 3 0.00 | | Intermediate Mn My | | Major 1.76E+02 0.00E+00 | | Minor 1.20E+02 0.00E+00 | |-----------------------------------------------------------------------| | CHECK FOR BENDING-LATERAL TORSIONAL BUCKLING | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Major -0.00E+00 1.04E+03 0.000 Eq. F9-4 3 0.00 | | Intermediate Mn Me Cb Lp Lr Lb | | Major 1.16E+03 0.00E+00 1.00 0.00 0.00 96.00 | STAAD SPACE -- PAGE NO. 5 STAAD.PRO CODE CHECKING - (AISC-360-05-LRFD) v3.3a ******************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted) |-----------------------------------------------------------------------| | CHECK FOR FLEXURE TENS/COMP INTERACTION | | RATIO CRITERIA L/C LOC | | Flexure Comp 0.945 Eq. H2-1 3 0.00 | | Flexure Tens 0.000 Eq. H1-1b 3 0.00 | | Intermediate frbw / frbz / fra / | | Fcbw Fcbz Fca | | Flexure Comp 0.00E+00 0.00E+00 1.55E+01 | | 5.18E+01 5.18E+01 1.64E+01 | | Intermediate Mcx Mrx Pc | | Mcy Mry Pr | | Flexure Tens 1.58E+02 -0.00E+00 1.26E+02 | | 1.08E+02 0.00E+00 0.00E+00 | |-----------------------------------------------------------------------| 70. LOAD LIST 4 71. PARAMETER 2 72. CODE AISC UNIFIED 2005 73. METHOD ASD 74. FU 58 ALL 75. FYLD 36 ALL 76. CSPACING 32 ALL 77. TRACK 2 ALL 78. CHECK CODE ALL STEEL DESIGN STAAD SPACE -- PAGE NO. 6 STAAD.PRO CODE CHECKING - ( AISC-360-05-ASD) v3.3a ******************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted) MEMBER TABLE RESULT/ CRITICAL COND/ RATIO/ LOADING/ FX MY MZ LOCATION ======================================================================= 1 LD L50304 (AISC SECTIONS) PASS Eq. H2-1 0.947 4 40.00 C 0.00 0.00 0.00 |-----------------------------------------------------------------------| | SLENDERNESS | | Actual Slenderness Ratio : 78.939 L/C : 4 | | Allowable Slenderness Ratio : 200.000 LOC : 0.00 | |-----------------------------------------------------------------------| | STRENGTH CHECKS | | Critical L/C : 4 Ratio : 0.947(PASS) | | Loc : 0.00 Condition : Eq. H2-1 | |-----------------------------------------------------------------------| | DESIGN FORCES | | Fx: 4.000E+01(C ) 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: 1.500E+00 Ayy: 1.250E+00 Cw: 0.000E+00 | | Szz: 3.055E+00 Syy: 2.075E+00 | | Izz: 1.022E+01 Iyy: 7.003E+00 Ix: 8.083E-02 | |-----------------------------------------------------------------------| | MATERIAL PROPERTIES | | Fyld: 36.000 Fu: 58.000 | |-----------------------------------------------------------------------| | Actual Member Length: 96.000 | | Design Parameters | | Kz: 1.00 Ky: 1.00 NSF: 1.00 SLF: 1.00 CSP: 32.00 | |-----------------------------------------------------------------------| | SECTION CLASS UNSTIFFENED / λ λp λr CASE | | STIFFENED | | Compression : Slender 20.00 N/A 12.77 T.B4.1-5 | | N/A N/A N/A N/A N/A | | Flexure : Non-Compact 20.00 15.33 25.83 T.B4.1-6 | | N/A N/A N/A N/A N/A | STAAD SPACE -- PAGE NO. 7 STAAD.PRO CODE CHECKING - ( AISC-360-05-ASD) v3.3a ******************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted) |-----------------------------------------------------------------------| | CHECK FOR AXIAL TENSION | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Yield 0.00E+00 8.36E+01 0.000 Eq. D2-1 4 0.00 | | Rupture 0.00E+00 1.13E+02 0.000 Eq. D2-2 4 0.00 | |-----------------------------------------------------------------------| | CHECK FOR AXIAL COMPRESSION | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Maj Buck 4.00E+01 5.80E+01 0.689 Sec. E1 4 0.00 | | Min Buck 4.00E+01 5.38E+01 0.743 Eq. E7-1 4 0.00 | | Flexural | | Tor Buck 4.00E+01 4.22E+01 0.947 Eq. E7-1 4 0.00 | | Intermediate | | Results Eff Area KL/r Fcr Fe Pn | | Maj Buck 3.88E+00 59.15 2.50E+01 8.18E+01 9.69E+01 | | Min Buck 3.88E+00 72.59 2.32E+01 5.43E+01 8.99E+01 | | Flexural Ag Fcr Pn | | Tor Buck 3.88E+00 1.82E+01 7.05E+01 | |-----------------------------------------------------------------------| | CHECK FOR SHEAR | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Local-Z -0.00E+00 1.94E+01 0.000 Eq. G2-1 4 0.00 | | Local-Y 0.00E+00 1.62E+01 0.000 Eq. G2-1 4 0.00 | | Intermediate | | Results Aw Cv Kv h/tw Vn | | Local-Z 1.50E+00 1.00 1.20 12.00 3.24E+01 | | Local-Y 1.25E+00 1.00 1.20 20.00 2.70E+01 | |-----------------------------------------------------------------------| | CHECK FOR BENDING-YIELDING | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Major -0.00E+00 1.05E+02 0.000 Eq. F9-1 4 0.00 | | Minor 0.00E+00 7.16E+01 0.000 Eq. F6-1 4 0.00 | | Intermediate Mn My | | Major 1.76E+02 0.00E+00 | | Minor 1.20E+02 0.00E+00 | |-----------------------------------------------------------------------| | CHECK FOR BENDING-LATERAL TORSIONAL BUCKLING | | | | FORCE CAPACITY RATIO CRITERIA L/C LOC | | Major -0.00E+00 6.93E+02 0.000 Eq. F9-4 4 0.00 | | Intermediate Mn Me Cb Lp Lr Lb | | Major 1.16E+03 0.00E+00 1.00 0.00 0.00 96.00 | STAAD SPACE -- PAGE NO. 8 STAAD.PRO CODE CHECKING - ( AISC-360-05-ASD) v3.3a ******************************************** ALL UNITS ARE - KIP INCH (UNLESS OTHERWISE Noted) |-----------------------------------------------------------------------| | CHECK FOR FLEXURE TENS/COMP INTERACTION | | RATIO CRITERIA L/C LOC | | Flexure Comp 0.947 Eq. H2-1 4 0.00 | | Flexure Tens 0.000 Eq. H1-1b 4 0.00 | | Intermediate frbw / frbz / fra / | | Fcbw Fcbz Fca | | Flexure Comp 0.00E+00 0.00E+00 1.03E+01 | | 3.45E+01 3.45E+01 1.09E+01 | | Intermediate Mcx Mrx Pc | | Mcy Mry Pr | | Flexure Tens 1.05E+02 -0.00E+00 8.36E+01 | | 7.16E+01 0.00E+00 0.00E+00 | |-----------------------------------------------------------------------|