D1.L.3.6 Example

A cantilever beam of length 100 inch is loaded at its free end with 5 kip compressive load and a uniformly distributed load of 1 kip/inch over the whole span. The beam is assigned with B571806 steel member and is designed in accordance with ASME NF3000 1998.

The corresponding input of STAAD input editor file is shown as below:

STAAD SPACE 
START JOB INFORMATION
ENGINEER DATE 18-Jun-08
END JOB INFORMATION
UNIT INCHES KIP
JOINT COORDINATES
1 0 0 0; 2 100 0 0;
MEMBER INCIDENCES
1 1 2;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 29000
POISSON 0.3
DENSITY 76.8195
ALPHA 1.2e-005
DAMP 0.03
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 TABLE ST B571806
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 FIXED
LOAD 1
JOINT LOAD
2 FX -5
MEMBER LOAD
1 UNI GY -1.0 0 100
PERFORM ANALYSIS
PARAMETER 1
CODE NF3000 1998
STYPE 1 ALL
FYLD 36 ALL
KY 0.75 ALL
KZ 0.75 ALL
FU 58 ALL
NSF 0.9 ALL
CT 0.85 ALL
CB 0 ALL
TRACK 2 ALL
CHECK CODE ALL
FINISH

The corresponding TRACK 2 output is as follows:

                       STAAD.PRO CODE CHECKING - (  ASME NF3000-98)   v2.0
                       ********************************************


 
 
 ALL UNITS ARE - KIP  INCH (UNLESS OTHERWISE Noted)
 
 MEMBER     TABLE       RESULT/   CRITICAL COND/     RATIO/     LOADING/
                          FX            MY             MZ       LOCATION
 =======================================================================
 

      1  ST   B571806                  (AISC SECTIONS)
                           PASS      SHEAR Y           0.635         1
                        5.00 C          0.00        5000.00        0.00
 |-----------------------------------------------------------------------------|
 | SLENDERNESS CHECK:    ACTUAL RATIO:  20.85 ALLOWABLE RATIO: 200.00          |
 | ALLOWABLE STRESSES:   (UNIT - KIP  INCH)                                    |
 | AXIAL: 1.20E+01  FCZ: 2.22E+01  FCY: 2.31E+01  FTZ: 2.22E+01  FTY: 2.31E+01 |
 | SHEAR: 6.28E+00                                                             |
 | ACTUAL STRESSES: (UNIT - KIP  INCH)                                         |
 | AXIAL: 1.06E-01  FBZ: 5.86E+00  FBY: 0.00E+00 SHEAR: 3.99E+00               |
 |-----------------------------------------------------------------------------|
 | SECTION PROPERTIES: (UNIT - INCH)                                           |
 | AXX:  47.00  AYY:  25.08  AZZ:  15.00  RZZ: 22.80  RYY:  3.60               |
 | SZZ:     853.77  SYY:      67.54                                            |
 |-----------------------------------------------------------------------------|
 | PARAMETER: (UNIT - KIP  INCH)                                               |
 | KL/R-Z:  3.29   KL/R-Y: 20.85   UNL:  100.0   CMZ:  1.00   CMY:  1.00       |
 | CB: 1.75   FYLD:    36.00   FU:    58.00   NET SECTION FACTOR: 0.90         |
 | CT:  0.85   STEEL TYPE:  1.0  KS:1.000  KV:1.000  KBK:1.000                 |
 |-----------------------------------------------------------------------------|
 | CRITICAL LOADS FOR EACH CLAUSE CHECK (UNITS KIP -INCH)                      |
 | CLAUSE       RATIO  LOAD       FX        VY        VZ        MZ        MY   |
 | TENSION      0.000    0    0.00E+00       -         -         -         -   |
 | COMPRESSION  0.009    1    5.00E+00       -         -         -         -   |
 | COMP&BEND    0.272    1    5.00E+00       -         -    5.00E+03 0.00E+00  |
 | TEN&BEND     0.000    1    5.00E+00       -         -    5.00E+03 0.00E+00  |
 | SHEAR-Y      0.635    1        -     1.00E+02       -         -         -   |
 | SHEAR-Z      0.000    0        -          -    0.00E+00       -         -   |
 |-----------------------------------------------------------------------------|