CALCULATION SHEET
PADEYE STRENGTH CHECK
Design Parameters
Padeye materials
Yield Stress of Steel (E350 GRADE) Fy 330 MPa
Minimum Tensile Strength of Steel (E350 GRADE) Fu 490 MPa
Modulus of Elasticity of Steel ES 200000 MPa
Weld Electrodes FEXX 70 ksi 482.63 MPa
Density of Steel t
γsteel 7.85
3
m
Note:
Checks are based on Indian standard code IS800-2007
Check for Padeye:
Padeye Properties:
Length of Padeye Lpe 150 mm
Height of Padeye Hpe 120 mm
Thickness of Padeye tpe 25 mm
Hole Diameter Diape 34 mm
Radius of Padeye Rpe 50 mm
Moment Arm mape 70 mm
Shackle pin Diameter Diash 31.80 mm
Loading on padeye
Tension force Pten 10.61 t
Horizontal componet of force Phor 10.61 t
Vertical componet of force Pvert 10.61 t
CALCULATION SHEET
Check for Bearing:
Nominal bearing strength Fnbpe 1.80 Fy Diash tpe 48.15 t
Safety Factor bearing strength Ω 2.00
Fnbpe
Available bearing strength Fabpe 24.08 t
Ω
Check for Bearing Strength checkbearingpe if Pten Fabpe
"Padeye is OK" Pten
else 0.44
"Padeye is NOT OK" Fabpe
checkbearingpe "Padeye is OK"
Tensile Rupture:
Effective edge distance be if 2 tpe 16 mm Rpe
2 tpe 16 mm
else
Rpe
be 50 mm
Nominal tensile rupture stress Fntrpe Fu 490 MPa
Safety Factor for tensile rupture Ωt 2.00
Fntrpe
Available tensile rupture stress Fatrpe 245 MPa
Ωt
Pten
ftrpe 41.62 MPa
Actual tensile rupture stress 2 tpe be
Check for Tensile Rupture checkTEpe if ftrpe Fatrpe
"Padeye is OK" ftrpe
else 0.17
Fatrpe
"Padeye is NOT OK"
checkTEpe "Padeye is OK"
CALCULATION SHEET
Check for Shear Rupture:
Nominal shear rupture stress Fvnpe 0.60 Fu 294 MPa
Safety Factor for shear rupture Ωsf 2.00
Fvnpe
Available shear rupture stress Fvape 147 MPa
Ωsf
Pten
Actual shear rupture stress fvpe 41.62 MPa
2 tpe Rpe
Check for shear rupture checkSRpe if fvpe Fvape
fvpe
"Padeye is OK" 0.28
Fvape
else
"Padeye is NOT OK"
checkSRpe "Padeye is OK"
Allowable stresses:
Bending
Nominal Bending stress Fbnpe Fy 330 MPa
Safety Factor for Bending Ωb 1.67
Fbnpe
Available Bending stress Fbape 197.6 MPa
Ωb
Shear
Nominal Shear stress Fvnpe 0.60 Fy 198 MPa
Safety Factor for Shear Ωv 1.67
Available Shear stress Fvnpe
Fvape 118.56 MPa
Ωv
Tension
Nominal Tensile Yielding stress Ftnpe Fy 330 MPa
Safety Factor for Tensile Yielding Ωty 1.67
Available Tensile Yielding stress Ftnpe
Ftape 197.6 MPa
Ωty
CALCULATION SHEET
Check for Bending:
Required Bending Moment stress 6 Phor mape
fbpe 77.69 MPa
2
tpe Lpe
Check for Bending Stress
checkbendingpe if fbpe Fbape fbpe
0.39
"Padeye is OK" Fbape
else
"Padeye is NOT OK"
checkbendingpe "Padeye is OK"
Check for Shear:
Phor
Required Shear stress fvpe 27.75 MPa
tpe Lpe
Check for Shear Stress checkshearpe if fvpe Fvape fvpe
0.23
"Padeye is OK" Fvape
else
"Padeye is NOT OK"
checkshearpe "Padeye is OK"
Check for Tension:
Required Tensile stress Pvert
ftpe 27.75 MPa
tpe Lpe
Check for Tensile Stress
checktensilepe if ftpe Ftape
"Padeye is OK" ftpe
else 0.14
"Padeye is NOT OK" Ftape
checktensilepe "Padeye is OK"
Check for Combined Stresses:
fbpe ftpe
Ratio ratio 0.53
Fbape Ftape
Check
checkpe if ratio 1.00
"Padeye is OK"
else
"Padeye is NOT OK"
checkpe "Padeye is OK"
Axial Tension from Lashings Flt Pten 10.61 t
Out of Plane Shear FOP 0.05 Flt 0.53 t
CALCULATION SHEET
Bending Moment due to Out of FbpOP FOP mape 0.04 t m
Plane
6 FbpOP
Bending Stress due to Out of FbyOP 23.31 MPa
2
Plane tpe Lpe
Nominal Bending stress for Out of FbnpeOP Fy 330 MPa
Plane
Safety Factor for Bending stress ΩOP 1.67
Out of Plane
FbnpeOP
Available Bending stress FbapeOP 197.6 MPa
ΩOP
due to Out of Plane
FbyOP
Bending stress Ratio due to ratioBOP 0.12
FbapeOP
Out of Plane
Check for Bending stress
due to Out of Plane checkBOP if ratioBOP 1.00
"Padeye is OK"
else
"Padeye is NOT OK"
checkBOP "Padeye is OK"
FOP
Shear stress for Out of Plane ftransOP 1.39 MPa
Lpe tpe
Nominal Shear stress FvnpeOP 0.60 Fy 198 MPa
Safety Factor for Shear stress ΩvOP 1.67
Out of Plane
FvnpeOP
Available Shear stress FvapeOP 118.56 MPa
ΩvOP
due to Out of Plane
ftransOP
Shear stress Ratio due to ratioVOP 0.01
FvnpeOP
Out of Plane
Check for Shear stress checkVOP if ratioVOP 1.00
due to Out of Plane "Padeye is OK"
else
"Padeye is NOT OK"
checkVOP "Padeye is OK"
CALCULATION SHEET
Check for Weld:
Weld thickness: twpe 16 mm
Number of welds: nwpe 2
2
Lpe twpe 0.707 4 3
Section modulus of weld: Swpe nwpe 8.48 10 mm
6
3 2
Area of weld: Awpe nwpe Lpe twpe 0.707 3.39 10 mm
2 2
Phor mape Pvert Phor
Total weld stress: fwpe 3 128.04 MPa
Swpe Awpe Awpe
Nominal Weld Stress: Fwnpe 0.60 FEXX 289.58 MPa
Safety Factor for welds: Ωw 2.00
Fwnpe
Available weld Stress: Fwape 144.79 MPa
Ωw
Check for weld: checkweldpe if fwpe Fwape
fwpe
"Weld is OK" 0.88
Fwape
else
"Weld is NOT OK"
checkweldpe "Weld is OK"
