# V. AISC ASD - Column Compression Capacity 1

Determine the axial compression capacity of a W14X132 column.

## Reference

AISC Allowable Stress Design, 9th Edition, Example 1, page 3-4.

## Problem

 Fy =36 ksi

 KyLy =16ft

 KzLz = 31ft

## Comparison

The reported STAAD.Pro value is obtained by multiplying FA times AX from the STAAD.Pro output:

17.36 ksi (38.8 in2) = 673.6 kips

Result Type Reference STAAD.Pro Difference
Allowable load (kips) 679 673.6 0.8%

## STAAD Input

The file C:\Users\Public\Public Documents\STAAD.Pro CONNECT Edition\Samples\ Verification Models\09 Steel Design\US\AISC\ASD 9th Edition\AISC ASD - Column Compression Capacity 1.STD is typically installed with the program.

STAAD SPACE AISC VERIFICATION PROBLEM FOR AXIAL COMPRESSION CAPACITY.
START JOB INFORMATION
ENGINEER DATE 22-Sep-18
END JOB INFORMATION
* PAGE 3-4 OF 9TH ED. AISC-ASD. EXAMPLE 1. FA SHOULD BE 679/38.8 =
* 17.5 KSI. RATIO SHOULD BE APPROXIMATELY 670/679 = 0.987
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 0 31 0;
MEMBER INCIDENCES
1 1 2;
MEMBER PROPERTY AMERICAN
1 TABLE ST W14X132
UNIT INCHES KIP
DEFINE MATERIAL START
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
1 FIXED
LOAD 1
JOINT LOAD
2 FY -670
PERFORM ANALYSIS
UNIT INCHES KIP
PARAMETER 1
CODE AISC
FYLD 36 ALL
LY 192 ALL
TRACK 2 ALL
CHECK CODE ALL
FINISH


## STAAD Output

      AISC VERIFICATION PROBLEM FOR AXIAL COMPRESSION CAPACITY -- PAGE NO.    3
STAAD.PRO CODE CHECKING - (AISC 9TH EDITION)   v1.0
********************************************
|--------------------------------------------------------------------------|
|                                                    Y        PROPERTIES   |
|*************                                       |        IN INCH UNIT |
|            *  |=============================|   ===|===     ------------ |
|MEMBER   1  *  |  AISC SECTIONS              |      |        AX =  38.80  |
|            *  | ST  W14X132                 |      |   --Z  AY =   8.48  |
|DESIGN CODE *  |                             |      |        AZ =  20.33  |
| AISC-1989  *  ===============================   ===|===     SY =  74.56  |
|            *                                                SZ = 208.16  |
|            *  |&lt;---LENGTH (FT)=   31.00 --->|               RY =   3.76  |
|*************                                                RZ =   6.28  |
|                                                                          |
|                  0.0 (KIP-FEET)                                          |
|PARAMETER        |L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  STRESSES     |
|IN KIP  INCH     |L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  IN KIP  INCH |
|---------------  +L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  -------------|
| KL/R-Y=  51.09  |L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  FA  =  17.36 |
| KL/R-Z=  59.24  +L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  fa  =  17.27 |
| UNL   = 372.00  |L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  FCZ =  21.60 |
| CB    =   1.00  +L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  FTZ =  21.60 |
| CMY   =   0.85  |L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  FCY =  27.00 |
| CMZ   =   0.85  +L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  FTY =  27.00 |
| FYLD  =  36.00  |L0 L0  L0  L0  L0  L0  L0  L0  L0  L0  L0  fbz =   0.00 |
| NSF   =   1.00  +---+---+---+---+---+---+---+---+---+---|   fby =   0.00 |
| DFF   =   0.00   0.0                                        Fey =  57.21 |
| dff=      0.00               ABSOLUTE MZ ENVELOPE           Fez =  42.55 |
| (KL/R)max =  59.24              (WITH LOAD NO.)             FV  =  14.40 |
|                                                             fv  =   0.00 |
|                                                                          |
|                      MAX FORCE/ MOMENT SUMMARY  (KIP-FEET)               |
|                      -------------------------                           |
|                                                                          |
|                AXIAL      SHEAR-Y    SHEAR-Z    MOMENT-Y    MOMENT-Z     |
|                                                                          |
|      VALUE     670.0         0.0        0.0         0.0         0.0      |
|   LOCATION       0.0         0.0        0.0         0.0         0.0      |
|    LOADING         1           0          0           0           0      |
|                                                                          |
|**************************************************************************|
|*                                                                        *|
|*                         DESIGN SUMMARY  (KIP-FEET)                     *|
|*                         --------------                                 *|
|*                                                                        *|
|*       RESULT/     CRITICAL COND/     RATIO/         LOADING/           *|
|         FX              MY             MZ           LOCATION             |
|        ======================================================            |
|          PASS        AISC- H1-1       0.994              1               |
|        670.00 C          0.00         0.00             0.00              |
|*                                                                        *|
|**************************************************************************|
|                                                                          |
AISC VERIFICATION PROBLEM FOR AXIAL COMPRESSION CAPACITY -- PAGE NO.    4
ALL UNITS ARE - KIP  INCH (UNLESS OTHERWISE Noted)
MEMBER     TABLE       RESULT/   CRITICAL COND/     RATIO/     LOADING/
FX            MY             MZ       LOCATION
=======================================================================