V. BS5950 2000 - Pinned Column Using Non-Slender UC
A 6.0 m 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 6, The Steel Construction Institute.
Problem
The column is designed in S275 steel for the factored loading.
Point load, Fc = 2,500 kN
Comparison
Result Type | Theory | STAAD.Pro | Difference |
---|---|---|---|
Slenderness about strong axis, λx | 38.5 | 38.299 | none |
Slenderness about weak axis, λy | 63.6 | 63.569 | none |
Compression capacity, Pc (kN) | 3,100 | 3,090 | none |
STAAD Input
-
TRACK 2 ALL
- Maximum detail output
-
SGR 0 ALL
- Identifies steel grade as S275
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 UC.STD is typically installed with the program.
STAAD SPACE
START JOB INFORMATION
JOB NAME Example no. 10
JOB CLIENT The Steel Construction Institute
JOB COMMENT Pinned column using a non-slender UC.
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 UC356X368X129
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 0 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 UC356X368X129 PASS BS-4.7 (C) 0.809 1
2500.00 C 0.00 0.00 0.00
=======================================================================
MATERIAL DATA
Grade of steel = S 275
Modulus of elasticity = 205 kN/mm2
Design Strength (py) = 265 N/mm2
SECTION PROPERTIES (units - cm)
Member Length = 600.00
Gross Area = 164.00 Net Area = 164.00 Eff. Area = 164.00
z-z axis y-y axis
Moment of inertia : 40200.008 14600.002
Plastic modulus : 2480.000 1200.000
Elastic modulus : 2260.968 792.187
Effective modulus : 2458.506 1159.980
Shear Area : 116.109 36.982
DESIGN DATA (units - kN,m) BS5950-1/2000
Section Class : SEMI-COMPACT
Squash Load : 4346.00
Axial force/Squash load : 0.575
z-z axis y-y axis
Compression Capacity : 3992.2 3089.3
Shear Capacity : 1846.1 588.0
BUCKLING CALCULATIONS (units - kN,m)
(axis nomenclature as per design code)
x-x axis y-y axis
Slenderness : 38.323 63.591
Radius of gyration (cm) : 15.656 9.435
Effective Length : 6.000 6.000
LTB Moment Capacity (kNm) and LTB Length (m): 577.91, 6.000
LTB Coefficients & Associated Moments (kNm):
mLT = 1.00 : mx = 0.00 : my = 0.00 : myx = 0.00
Mlt = 0.00 : Mx = 0.00 : My = 0.00 : My = 0.00
STAAD SPACE -- PAGE NO. 6
CRITICAL LOADS FOR EACH CLAUSE CHECK (units- kN,m):
CLAUSE RATIO LOAD FX VY VZ MZ MY
BS-4.7 (C) 0.809 1 2500.0 - - - -
Torsion and deflections have not been considered in the design.
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