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PADEYE DESIGN CALCULATION

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PTS 34.19.10.30 ( Appendix IX )

• In lifting attachment design load the padeye shall be designed for lateral load of a least 5% of this load.

• Permissible stresses shall be as defined in AISC with following additional requirements :

- Transfer of stresses through the thickness of the plate shall not be allowed unless the material has through thickness properties. In this instance through thickness stresses shall be limited to 0.2 Fy.

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= (MBL / Sling MBL)

1.1 Design CalculationExample1

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O.75 X

Use min value 35 : 45

O.75 X

Use min value 25 : 26.25

=((radius of main plate-(pin hole/2))*(tm) +(radius cheekplate1-(pin hole/2))*tce*2+(radius cheekplate2 -(pin hole/2))*tc2e*2)*2

=2*(2* radius of cheekplate(1)* tce)+2*(2* radius of cheek plate(2)* tc2e)+(radius of main plate*2* (tm))-2* pin hole* (tm)

= Max static sling load *1000/ Area at tension failure

=Tension stress / Allowable tensile stress

=(tce/((tm) +2* tce+2* tc2e))* Max static sling load

= 0.7* (tc)= F * 1000 / Aw

= shear stress / Allowable shear stress

= shear stress at weld / Allowable shear stress

= ([B]-((tm) +2* 0.75tm+2* tc2e))/2

= 0.1*[B] = 0.2*[B]

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