V. BS5950 2000 - Pinned Column Using Non-Slender RHS
A 6.0m rectangular hollow section (RHS) column is pin ended about both axes and has no intermediate restraints.
Reference
Steelwork Design Guide to BS 5950-1:2000, Volume 2, Worked Examples, SCI publication P326, Example 11, The Steel Construction Institute.
Problem
The column is designed in S355 steel for the factored loading.
Point load, Fc = 2,500 kN
Comparison
Result Type | Theory | STAAD.Pro | Difference |
---|---|---|---|
Slenderness, λ | 61.4 | 61.424 | none |
Compression capacity, Pc (kN-m) | 2,790 | 2,794.6 | none |
STAAD Input
-
TRACK 2 ALL
- Maximum detail output
-
SGR 1 ALL
- Identifies steel grade as S355
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 2024\Samples \Verification Models\09 Steel Design\UK\BS5950 2000 - Pinned Column Using Non-Slender RHS.STD is typically installed with the program.
STAAD SPACE
START JOB INFORMATION
JOB NAME Example no. 11
JOB CLIENT The Steel Construction Institute
JOB COMMENT Pinned column using a non-slender RHS.
ENGINEER DATE Jun 2003
END JOB INFORMATION
INPUT WIDTH 79
UNIT METER KN
JOINT COORDINATES
1 0 0 0; 2 0 6 0;
MEMBER INCIDENCES
1 1 2;
*************************************
DEFINE MATERIAL START
ISOTROPIC STEEL
E 2.05e+08
POISSON 0.3
DENSITY 76.8195
ALPHA 1.2e-05
DAMP 0.03
END DEFINE MATERIAL
MEMBER PROPERTY BRITISH
1 TABLE ST TUB25025010.0
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 FIXED
*************************************
LOAD 1 AXIAL LOAD
JOINT LOAD
2 FY -2500
PERFORM ANALYSIS PRINT STATICS CHECK
***************************************
PARAMETER 1
CODE BS5950
SGR 1 ALL
TRACK 2 ALL
CHECK CODE ALL
FINISH
STAAD Output
STAAD.Pro CODE CHECKING - (BSI )
***********************
PROGRAM CODE REVISION V2.13_5950-1_2000
STAAD SPACE -- PAGE NO. 5
ALL UNITS ARE - KN METE (UNLESS OTHERWISE Noted)
MEMBER TABLE RESULT/ CRITICAL COND/ RATIO/ LOADING/
FX MY MZ LOCATION
=======================================================================
1 ST TUB25025010.0 PASS BS-4.7 (C) 0.895 1
2500.00 C 0.00 0.00 0.00
=======================================================================
MATERIAL DATA
Grade of steel = S 355
Modulus of elasticity = 205 kN/mm2
Design Strength (py) = 355 N/mm2
SECTION PROPERTIES (units - cm)
Member Length = 600.00
Gross Area = 94.90 Net Area = 94.90 Eff. Area = 94.90
z-z axis y-y axis
Moment of inertia : 9055.001 9055.001
Plastic modulus : 851.000 851.000
Elastic modulus : 724.400 724.400
Effective modulus : 851.000 851.000
Shear Area : 47.450 47.450
DESIGN DATA (units - kN,m) BS5950-1/2000
Section Class : SEMI-COMPACT
Squash Load : 3368.95
Axial force/Squash load : 0.742
z-z axis y-y axis
Compression Capacity : 2794.6 2794.6
Shear Capacity : 1010.7 1010.7
BUCKLING CALCULATIONS (units - kN,m)
(axis nomenclature as per design code)
x-x axis y-y axis
Slenderness : 61.424 61.424
Radius of gyration (cm) : 9.768 9.768
Effective Length : 6.000 6.000
LTB check unnecessary for this section
CRITICAL LOADS FOR EACH CLAUSE CHECK (units- kN,m):
CLAUSE RATIO LOAD FX VY VZ MZ MY
BS-4.7 (C) 0.895 1 2500.0 - - - -
Torsion and deflections have not been considered in the design.
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