ETABS 22.5.
1 License #
ETABS Steel Frame Design
IS 800:2007 Steel Section Check (Strength Envelope)
Stress Check Message - Section is not Class 1 (Plastic) (IS 12.8.4.1, 12.8.2.5, 12.11.3.1 )
Element Details (Part 1 of 2)
Level Element Unique Name Location (mm) Combo Design Type Element Type Section
Story5 C6 777 0 static Column Special Moment Frame ISHB400-2
Element Details (Part 2 of 2)
Classification Rolled
Class 3 Yes
Design Code Parameters
ɣ M0 ɣ M1 A n /A g LLRF PLLF Stress ratio Limit
1.1 1.25 1 0.669 0.75 0.95
Section Properties
A (cm²) I zz (cm⁴) r zz (mm) Z e,zz (cm³) A v,z (cm²) Z p,zz (cm³) I yz (cm⁴) I t (cm⁴)
103.2 28464.6 166.1 1423.2 63.5 1601.5 0 49.5
J (cm⁴) I yy (cm⁴) r yy (mm) Z e,yy (cm³) A v,y (cm²) Z p,yy (cm³) I w (cm⁶) h (mm)
49.5 3311 56.6 264.9 42.4 407.4 1240245 400
Material Properties
E (MPa) f y (MPa) f u (MPa)
210000 345 450
LLRF and Demand/Capacity Ratio
L (mm) LLRF Stress Ratio Limit
3000.0 0.669 0.95
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ETABS 22.5.1 License #
Demand/Capacity (D/C) Ratio
D/C Ratio = Axial Ratio + Flexural Ratio Major +
Governing Equation
Flexural Ratio Minor
9.3.2.2(a) 0.96 = 0.698 + 0.149 + 0.113
Stress Check Forces and Moments
Location (mm) N (kN) M zz (kN-m) M yy (kN-m) V y (kN) V z (kN) T o (kN-m)
0 -1061.361 69.6794 -21.3228 45.6968 -13.9662 4.42E-05
Basic Factors
Buckling Mode K Factor L Factor L Length (mm) KL/r
Major (z-z) 3.356 0.9 2700 54.569
Major Braced 0.91 0.9 2700 14.801
Minor (y-y) 1.976 0.9 2700 94.216
Minor Braced 0.788 0.9 2700 37.564
LTB 1.976 0.9 2700 94.216
Axial Force Design
N Force T d Capacity N d Capacity P dy Capacity P z Capacity P d Capacity
kN kN kN kN kN kN
Axial -1061.361 3236.9656 3236.9656 1520.5917 2737.9329 1520.5917
T dg T dn N cr,T N cr,TF A n /A g
kN kN kN kN Unitless
3236.9656 3343.9262 4230.8985 4230.8985 1
Design Parameters for Axial Design
Curve α f cc (MPa) λ ϕ χ f cd (MPa)
Major (z-z) a 0.21 696.02 0.704 0.801 0.846 265.28
MajorB (z-z) a 0.21 9460.53 0.191 0.517 1 313.64
Minor (y-y) b 0.34 233.49 1.216 1.411 0.47 147.33
MinorB (y-y) b 0.34 1468.82 0.485 0.666 0.891 147.33
Torsional TF b 0.34 409.94 0.917 1.043 0.65 203.86
Moment Designs
M Moment M span Moment M d(yield) Capacity M dv Capacity M nd Capacity M d(LTB) Capacity
kN-m kN-m kN-m kN-m kN-m kN-m
Major (z-z) 69.6794 69.6794 446.3759 446.3759 333.0164 402.2347
Minor (y-y) -21.3228 -21.3228 83.0762 83.0762 80.8237
Factors
Curve α LT λ LT ϕ LT χ LT C1 M cr (kN-m)
LTB a 0.21 0.57 0.701 0.901 2.7 1512.7352
C my C mz C mLT kz ky K LT
Factors 0.4 0.4 0.4 0.997 1.105 0.86
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ETABS 22.5.1 License #
Shear Design
V Force (kN) V d Capacity (kN) T o Capacity (kN-m) Stress Ratio Status Check
Major (y) 45.6968 767.7705 4.42E-05 0.06 OK
Minor (z) 13.9662 1149.845 4.42E-05 0.012 OK
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