The document provides guidelines for padeye design and calculations for lifting attachments. It states that padeyes shall be designed for at least 5% of the design load applied laterally and that permissible stresses shall follow AISC standards with additional requirements limiting through-thickness stresses to 0.2 times the yield strength if the material does not have through-thickness properties. It then provides examples of calculations for padeye design including shear stress, tension stress, weld shear stress, and dimensional requirements.

1. PADEYE DESIGN
CALCULATION
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2. 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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3. 1.1 Design Calculation
Example1
= (MBL / Sling MBL)
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4. O.75 X
Use min value 35 : 45
O.75 X
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Use min value 25 : 26.25

5. =((radius of main plate-(pin hole/2))*(tm) +(radius cheekplate1-(pin
hole/2))*tce*2+(radius cheekplate2 -(pin hole/2))*tc2e*2)*2
= shear stress / Allowable shear stress
=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
= F * 1000 / Aw
= 0.7* (tc)
= 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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