55ton FOR 3M105 EL100.782STRENGTH CHECK OF LIFTING PADEYE( FOR PADEYE TYPE 55 ton )1. )CONDITIONS :1.1Specifications: AISC & API-RP21.2In practice a horizontal force of 5% of the static sling load should be appliedsimultanrously with the sling load.1.3Try : main & cheek plate materials to Q345BFy=295N / mm21.4The lifting shackle pin diameter ,( 55 ton shackle , type BX class S( 6 ).)B=70.00mmC=3.00mmThe pin hole diameter in the lifting padeye ,Dpin-hole=B + C=73.00mmRadius of pin hole ,Rhole=Dpin-hole / 2=36.50mmWidth of main plate ,W=300mmCenter of pin hole from base ,H=170mmThickness of main plate ,MTHK=40mmRadius of main plate ,RM=120mm( > 1.25 * Dpin-hole )OK!Radius of cheek plate ,RCH=100.00mmThickness of cheek plate ,CHTHK=20mmWidth of stiffener plate ,STW=250mmThickness of stiffener plate ,STTHK=20mmEffective bearing angle ,a=120DEGREESResultant force angle ,q=67DEGREES1.5Taking padeye extreme case :Max . LoadF3=825.00KN( Total Load Factor =1.5)Static Sling LoadFS L550.00KN2. )CHECK FOR BEARINGPin diameter ,B=70.00mmTotal plate thk ,Tp l=MTHK + 2 * CHTHK=80mmBearing force ,Fb r=825000NBearing area ,Ab r=Tpl * ( B / 2 * a * p / 180 )=5864.31mm2fb r=Fbr / Abr=140.68N / mm2