LIFTING LUG CALCULATION :

<=10Material of lug IS 2062 Gr A

Yield Stress Sy 250 TWidth of lifting lug b 200 mm t 12Width of lifting lug pad bp 300 mm b 200Length of lifting lug pad L 230 mm d 60Thickness of lifting lug t 12 mm E 130

R 90 mm Rn 40Diameter of hole in the lifting lug d 60 mm w 10Top of brace from the center of hole s 110 mm R+s 200Total weld length on lifting lug Lw 722.83185 mm s 110Total weld length on lifting lug pad Lwp 1060 mm bp 300Fillet weld size on lifting lug w 10 mm R 90Fillet weld size on lifting lug pad wp 9 mm L 230

E 130 mm

Rn 40 mm Result of the lifting lug

FAIL

Lw 722.83Weight to be lifted W 4412 KG Lwp 1060Jerk factor j 2

Number of lugs n 2

Force acting on the lug = w * j / n F 43281.72 N

Double shear

C/S area at sec a-a = (R - d/2) * t Aa 720

C/S area at sec b-b = (b-d) * t Ab 1680

Ssa 60.11

Permissible shear stress 0.4 * Sy Ss 100

RESULT PASS

Tenisile stress

Tenisile stress at area b-b = F / Ab Stb 25.76

Permissible tenisile stress = 0.66 * Sy Stb 165

RESULT PASS

Bending stress

Fh 11197.978 N

Bending moment at base of Bracing =F*h Mo 1231777.6 N-mm

Section modulus of bracing = b * t2 / 6 z 4800.00

Bending stress Mo / z Sbw 256.62

Permissible bending stress 0.66 * Sy Sbw 165

RESULT FAIL

Weld check of the lug

Aw 5111.97

Shear stress = F / Aw Ssw 8.47

Awp 6746.82

Shear stress = F / Awp Sswp 6.42

Max. erection weightN/mm2

Distance of hole from the top of the lifting lug

mm2

mm2

Shear stress at area a-a = F / Aa (double shear) N/mm2

N/mm2

N/mm2

N/mm2

Horizontal force on lifting lug (assuming 150 sling angle)

mm3

N/mm2

N/mm2

Total weld area of fillet of lifting lug = ( Lw * w ) / 1.414 mm2

N/mm2

Total weld area of fillet of lifting lug pad = ( Lwp * wp ) / 1.414 mm2

N/mm2

Permissible shear stress = 0.4 * Sy Ss 100

RESULT PASS

N/mm2

<=25 <=45 <=90 <=140 <=180

T T T T T28 40 50 70 80

230 300 400 500 61075 75 100 130 150

130 150 200 250 300

40 50 75 90 10014 20 30 38 46

230 300 400 500 600140 185 250 320 370330 400 500 600 710

90 115 150 180 230230 250 300 350 400