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V. AS4100 1998 - Single Angle Section in Tension

To check the tensile capacity of a single angle per AS4100-1998.

Reference

Gorenc,B., R.Tinyou and A.Syam, Steel Designer's Handbook, 8th edition, UNSW Press,

problem 7.2, page 198.

Problem

Select a section for a diagonal member of a truss. Verify its capacity. Use on equal leg angle in Grade 300 steel with one line of M20/S fasteners in one leg. Axial load of 300 kN is applied.

Comparison

Table 1. Comparison of results
Result Type Theory STAAD.Pro Difference
Applied tensile load (kN) 300 300.3 0.1%
Tensile capacity, 0.9×Nt (kN) 492 492 none
Ratio 0.610 0.610 none

STAAD Input

Tip: You can copy and paste this content directly into a .std file to run in STAAD.Pro.

The file C:\Users\Public\Public Documents\STAAD.Pro CONNECT Edition\Samples\ Verification Models\09 Steel Design\Australia\AS4100 1998\AS4100 1998 - Single Angle Section in Tension.STD is typically installed with the program.

STAAD SPACE AXIAL TENSILE CAPACITY PER AS4100 1998
*
* REFERENCE : Steel Designer's Handbook, B.Gorenc, R.Tinyou and A.Syam,
*             8th edition, example problem 7.2, page 198
*
*  OBJECTIVE : TO DETERMINE THE CAPACITY OF A SINGLE ANGLE IN TENSION
*              PER THE AS4100-1998 CODE
*
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 4 0 0;
MEMBER INCIDENCES
1 1 2;
*
DEFINE MATERIAL START
ISOTROPIC STEEL
E 1.99947e+008
POISSON 0.3
DENSITY 76.8191
ALPHA 6.5e-006
DAMP 0.03
END DEFINE MATERIAL
*
MEMBER PROPERTY AUSTRALIAN
1 TABLE ST A125X125X8
PRINT MEMBER PROPERTY ALL
*
CONSTANTS
MATERIAL STEEL MEMB 1
*
SUPPORTS
1 FIXED
*****************************************
LOAD 1 LOADTYPE DEAD TITLE PERMANENT LOAD
JOINT LOAD
2 FX 99.0
*
LOAD 2 LOADTYPE LIVE TITLE IMPOSED LOAD
JOINT LOAD
2 FX 121
*
LOAD COMBINATION 3 ULS
1 1.2 2 1.5
*
PERFORM ANALYSIS
UNIT MMS NEWTON
*
PARAMETER 1
CODE AUSTRALIAN 1998
*
* KT from AS 4100-1998 Table 7.3.2 case (i)
KT 0.85 MEMB 1
*
* NSF = An/Ag = 1720/1900
NSF 0.905 MEMB 1
***
TRACK 2.0 ALL
CHECK CODE MEMB 1
*
* UTILIZATION RATIO = 300/492 = 0.610
*
FINISH

STAAD Output

    *                                           
                    STAAD.Pro CODE CHECKING - (  AS4100-1998   ) V2.3           
                    ****************************************************
   NOTE : BY DEFAULT "AS/NZS 3679.1 300" WILL BE USED FOR ROLLED SECTIONS.
  |--------------------------------------------------------------------------|
  |                                                    Y        PROPERTIES   |
  |*************                                       |        IN  CM  UNIT |
  |            *  |=============================|   ==| |==     ------------ |
  |MEMBER   1  *  |  AUSTRALIAN SECTIONS        |     | |       AX=0.1900E+2 |
  |            *  | ST  A125X125X8              |     | |  --Z  AY=0.6500E+1 |
  |DESIGN CODE *  |                             |     | |       AZ=0.6500E+1 |
  |AS4100 1998 *  ===============================   ==| |==     PY=0.8091E+2 |
  |            *                                                PZ=0.4058E+2 |
  |            *  |<---LENGTH (ME=     4.00 --->|               RY=0.4931E+1 |
  |*************                                                RZ=0.2480E+1 |
  |                                                             Iw=0.0000E+0 |
  |                  0.0( KN-METR)                                           |
  |PARAMETER        |�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  FORCE/MOMENT |
  |IN  NEWTON MM    |�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  IN  KN METRE |
  |---------------  +�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  -------------|
  | KL/R-Y=   81.1  |�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  PNC=0.9995E+2|
  | KL/R-Z=  161.3  +�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  PNT=0.4920E+3|
  | UNL   = 4000.0  |�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  pn =-.3003E+3|
  | MAIN  =    0.0  +�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  MNZ=0.6846E+1|
  | PHI   =   0.90  |�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  mnz=0.0000E+0|
  | FULT  =  440.0  +�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  MNY=0.1828E+2|
  | FYLD  =  320.0  |�0 �0  �0  �0  �0  �0  �0  �0  �0  �0  �0  mny=0.0000E+0|
  | NSF   =   0.90  +---+---+---+---+---+---+---+---+---+---|   VZ =0.1123E+3|
  | SKT   =   1.00    0.0                                       vz =0.0000E+0|
  | SKL   =   1.00               ABSOLUTE MZ ENVELOPE           VY =0.1123E+3|
  | SKR   =   1.00                  (WITH LOAD NO.)             vy =0.0000E+0|
  |                                                                          |
  | Section Type:  Noncompact - about Z axis;  Noncompact - about Y axis     |
  |                                                                          |
  |                    Parameters used to calculate RATIO                    |
  |                    ----------------------------------                    |
  | Ns=0.5349E+3  Msz=0.9458E+1  Msy=0.2031E+2  Mbz=0.7607E+1                |
  |               Miz=0.0000E+0  Miy=0.0000E+0  Moz=0.0000E+0                |
  |              Nciz=0.1111E+3 Nciy=0.2725E+3  Ncz=0.1111E+3  Ncy=0.2725E+3 |
  |              Vvmy=0.4942E-2 Vvmz=0.4942E-2                               |
  | ALPHA,M= 1.000  ALPHA,B= 1.000  ALPHA,SZ= 0.804                          |
  |                                                                          |
  |                      MAX FORCE/ MOMENT SUMMARY ( KN-METR)                |
  |                      -------------------------                           |
  |                AXIAL      SHEAR-Y    SHEAR-Z    MOMENT-Y    MOMENT-Z     |
  |      VALUE    -300.3         0.0        0.0         0.0         0.0      |
  |   LOCATION       4.0         0.0        0.0         0.0         0.0      |
  |    LOADING         3           0          0           0           0      |
  |**************************************************************************|
  |*                         DESIGN SUMMARY ( KN-METR)                      *|
  |*                         --------------                                 *|
  |*       RESULT/     CRITICAL COND/     RATIO/         LOADING/           *|
  |*         FX              MY             MZ           LOCATION           *|
  |*        ======================================================          *|
  |*          PASS        TENSION          0.610              3             *|
  |*        300.30 T           0.0          0.0             0.00            *|
  |**************************************************************************|
  |--------------------------------------------------------------------------|
      AXIAL TENSILE CAPACITY PER AS4100 1998                   -- PAGE NO.    5
    *