The crane shown in the photo can carry maximum load of Fv = 10 tons. The cross section at A-A is shown next to the photo. It has an outside diameter of 750mm and the thickness of 15mm. The I beam is made up of two 15mm thick flange and 10mm thick web and the cross-section is shown below at the fixed end. The web height decreases from one end to other with a slope of 1/20 as shown on photo.

a) In a day with 0 wind what is the maximum distance X that hoist can travel under a load of 10 tons, if the maximum or minimum principal stress should not exceed 235MPa?

b) If a wind force of Fh=1kN acting on the lifted load orthogonal to crane arm how long would the maximum distance X be? (Neglect the wind load on the arm and the pier of the crane)

All information is this, no more

 

H81-400mm 20 10T D=750mm t=15mm 180mm H=3m tr=15mm tw=12mm A 180mm 400mm