Design of Structural Steel Angles as per IS : 800_2007

File Name : D:\000_IS_800\new.800
Date : 09 April 2010
Organization : ABC Ltd.
Project : Caustic Soda Plant
Project # : 8912
Building ID : Cell House
Floor # : 12
Floor Level : 36.0 M
Concrete Grade : M20
Yield Stress in Mpa : 250
Ultimate Stress in Mpa : 410
Steel Rate in Rs/ton : 80000
Bolt Hole Type : Drilled
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Angle ID :
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Equal Angle Section : L90 90X6
Un Equal Angle Section : N A
Connected Angle Length in MM : 300
Effective Length @ ZZ Axis in MM : 3000
Effective Length @ YY Axis in MM : 3000
Angle Connection type : Type A
Bolt diameter : 16
No. of Bolts : 2
Angle Type : Single
Permissible Slenderness Ratio : 180
Factored Axial Force in KN : 45
Actual length of Angle in MM : 3000
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Angle Designation : L90 90X6
Length in MM : 90
Width in MM : 90
Thickness in MM : 6
Weight in N/M : 82
Area in MM2 : 1050
Cz in MM : 24.2
Cy in MM : 24.2
Iz in CM4 : 80.1
IY in CM4 : 80.1
rz in MM : 27.7
ry in MM : 27.7
ru in MM : 35
rv in MM : 17.5
Zz in CM3 : 12.2
Zy in CM3 : 12.2
Zpz in CM3 : 22.78
Member in Compression
ym0 = 1.1
ym1 = 1.25
Gross Area in MM2 = 1050
Slender Member : Net Area in MM2 = 900
Rzz in MM = 35
Ryy in MM = 17.5
sr_zz = 85.71
sr_yy = 171.43
Shear Capacity of Bolts in KN = 58.41
k1 = 0.7
k2 = 0.6
k3 = 5
Equivalent SR of Single Angle = 1.75
Alpha for Buckling Class C for Angles = 0.49
Value of Phi = 2.41
Design Compressive Stress in N/MM2 = 55.85
Actual Slenderness Ratio = 171.43 < = 180 : Hence OK.
Compressive Strength of Member in KN = 50.26 > = 45 : Hence OK.
Applied Force in KN = 45 < 58.41 : Shear Strength of Bolts in KN : Hence OK.
Min. Thk.of Plate Reqd. for Bolt Bearing in MM = 6
Section is Safe
Weight of Angle in Kg = 24.6
Cost of Angle in Rs = 1968
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Total Weight of Angles in Kg = 24.6
Total Cost of Angles in Rs = 1968
For design of plate thickness, refer seperate program option.
All bolts are Hexagon head Black Bolts Grade 4.6 as per IS 1364 (1).
Welding shall be as per IS 816 & IS 9595 as applicable.
Weld lenghts are given for each angle.
Longer side of Angle is assumed to be connected to plate.
