Design of fillet weldDESIGN OF FILLET WELD FOR COLUMN:-1) Minimum size of fillet weld = 3

Thickness of thicker partMinimum sizeBase plate Thickness=20mm(mm)(mm)Column flange / web thick =8mmUpto 10311 to 20521 to 32633 to 508Above 5010 minimum2) Throat of weld = K*fillet size = 3.5

Angle between facesConstant K60 to 900.791 to 1000.65101 to 1060.6107 to 1130.55114 to 1200.53) Effective length of weld = Overall length-(2*weld size) = Overallweld sizeEffectivelengthlength

60055904) Overlap in a lap joint should not be less than 5 times thickness of the plate 5) Safe load :-

Effective Throat Safe loadlengththickness(mm)(mm)(kN)5903.5223.02Safe load =223.02kNActual load=10.118kNHence safe

Design of tie in a trussDESIGN OF TIE IN A TRUSS:-1)DesignationThicknessLxLyAreaof angle(mm)(mm)(mm)(mm2)02) Force in each angle:-

AreaPermissibleForcestress(mm2)(Pa)(kN)0.0013) Size of weld:-Minimum size for gusset plate =

Thickness of thicker partMinimum size(mm)(mm)Upto 10311 to 20521 to 32633 to 508Above 5010 minimumThickness of Minimum sizeplatefor square edge(mm)(mm)108.5

ThicknessMaximum size ofof platerounded toe(mm)(mm)107.54)Effective length of weld:-

Force for Permissible stressEffective length of weldeach anglein fillet weld(kN)(Mpa)(mm)0.0015.250Total effective weld:-x1+x2+Ly = 0mmPermissible stress inMaximum size ofForce in weldfillet weldrounded toe(Mpa)(mm)(kN)0.0007

Sheet3