V. AISC ASD - Angle in Compression
Determine the allowable compressive load on a single L2x2x1/4 loaded by a gusset plate attached to one leg with eccentricities from the centroid along both axes.
Comparison
| Result Type | Theory | STAAD.Pro | Difference | |
|---|---|---|---|---|
| Allowable compressive load (kips) | 4.5 | Using a P of 4.5 kip yields a ratio of 0.898 | none | |
STAAD Input
The file C:\Users\Public\Public Documents\STAAD.Pro CONNECT Edition\Samples\ Verification Models\09 Steel Design\US\AISC\AISC ASD - Angle in Compression.STD is typically installed with the program.
STAAD SPACE AISC VERIFICATION PROBLEM FOR AXIAL COMPRESSION + BIAXIAL BENDING
* PAGE 3-55 OF 9TH ED. AISC-ASD. SINGLE ANGLE 2X2X1/4
* UNBRACED LENGTH IS 40 INCHES.
UNIT KIP FEET
JOINT COORD
1 0 0 0 ; 2 0 5 0
MEMB INCI
1 1 2
UNIT INCH
MEMB PROP AMERICAN
1 TA ST L20204
CONST
E STEEL ALL
POISS STEEL ALL
SUPP
1 FIXED
LOAD 1
JOINT LOAD
2 FY -4.5
* MZ = P * 0.277 = 1.2465 KIP-INCH
* MX = P * 0.854 = 3.843 KIP-INCH
2 MZ 1.2465
2 MX -3.843
PERF ANALY
UNIT INCH
PARAM
CODE AISC
FYLD 50 ALL
UNT 40 ALL
UNB 40 ALL
LY 40 ALL
LZ 40 ALL
TRACK 2 ALL
CHECK CODE ALL
FINISH
STAAD Output
STAAD.PRO CODE CHECKING - (AISC 9TH EDITION) v1.0 ******************************************** |--------------------------------------------------------------------------| | Y PROPERTIES | |************* | IN INCH UNIT | | * |=============================| ==| |== ------------ | |MEMBER 1 * | AISC SECTIONS | | | AX = 0.94 | | * | ST L20204 | | | --Z AY = 0.33 | |DESIGN CODE * | | | | AZ = 0.33 | | AISC-1989 * =============================== ==| |== SY = 0.39 | | * SZ = 0.17 | | * |<---LENGTH (FT)= 5.00 --->| RY = 0.77 | |************* RZ = 0.39 | | | | 0.1 (KIP-FEET) | |PARAMETER | L1 L1 L1 STRESSES | |IN KIP INCH | L1 L1 L1 IN KIP INCH | |--------------- + L1 L1 L1 -------------| | KL/R-Y= 52.22 | L1 L1 L1 FA = 13.92 | | KL/R-Z= 103.36 + L1 L1 L1 fa = 4.77 | | UNL = 40.00 |L1 L1 L1 L1 L1 L1 L1 L1 FCZ = 33.00 | | CB = 1.00 +L1 L1 L1 L1 L1 L1 L1 L1 FTZ = 33.00 | | CMY = 0.85 |L1 L1 L1 L1 L1 L1 L1 L1 FCY = 33.00 | | CMZ = 0.85 +L1 L1 L1 L1 L1 L1 L1 L1 FTY = 33.00 | | FYLD = 50.00 |L1 L1 L1 L1 L1 L1 L1 L1 fbz = 7.11 | | NSF = 1.00 +---+---+---+---+---+---+---+---+---+---| fby = 9.89 | | DFF = 0.00 0.1 Fey = 54.76 | | dff= 0.00 ABSOLUTE MZ ENVELOPE Fez = 13.98 | | (KL/R)max = 103.36 (WITH LOAD NO.) FV = 20.00 | | fv = 0.00 | | | | MAX FORCE/ MOMENT SUMMARY (KIP-FEET) | | ------------------------- | | | | AXIAL SHEAR-Y SHEAR-Z MOMENT-Y MOMENT-Z | | | | VALUE 4.5 0.0 0.0 0.3 0.1 | | LOCATION 0.0 0.0 0.0 0.0 0.0 | | LOADING 1 0 0 1 1 | | | |**************************************************************************| |* *| |* DESIGN SUMMARY (KIP-FEET) *| |* -------------- *| |* *| |* RESULT/ CRITICAL COND/ RATIO/ LOADING/ *| | FX MY MZ LOCATION | | ====================================================== | | PASS AISC- H1-1 0.899 1 | | 4.50 C -0.32 -0.10 0.00 | |* *| | | |--------------------------------------------------------------------------| AISC VERIFICATION PROBLEM FOR AXIAL COMPRESSION + BIAXIA -- PAGE NO. 4 * PAGE 3-55 OF 9TH ED. AISC-ASD. SINGLE ANGL 35. FINISH *********** END OF THE STAAD.Pro RUN *********** **** DATE= OCT 27,2022 TIME= 15:35:32 **** ************************************************************ * For technical assistance on STAAD.Pro, please visit * * http://www.bentley.com/en/support/ * * *