# 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.

## Reference

AISC Allowable Stress Design, 9th Edition,Example 10, page 3-55.

## Problem

 KL = 40 in

## Comparison

Table 1. Comparison of results
Allowable compressive load (kips) 4.5 Using a P of 4.5 kip yields a ratio of 0.898 none

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
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.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  |
|            *  |&lt;---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      |
|                                                                          |
|**************************************************************************|
|*                                                                        *|
|*                         DESIGN SUMMARY  (KIP-FEET)                     *|
|*                         --------------                                 *|
|*                                                                        *|
|         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 19,2021   TIME= 18:13: 7 ****
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