please help. I have also attached the required information sheet

Table 2: Metric bolt tensile areas Table 1: Bolt grades and strengths Table 3: Weld fatigue stress concentration factors Question 2: (22 marks) Figure 2: Bracket welded onto column A bracket is to be welded to a column and will be used to act as a support for a load which will vary from F= zero to +6kN (positive downwards). The weld geometry is given in Figure 2. The weld, bracket and column materials all have a yield strength Sy=240MPa and an ultimate tensile strength of Sut=350 MPa. A fatigue factor of safety of 3 is required. (a) Using the "Welds as lines" method determine the location of the centroid G, the weld throat area and second moment of area (in terms of weld leg length h ). Use the equations in the table attached to the question paper and use the convention for the location of the centroid. Also determine the midrange and alternating forces and moments. (8 marks) (b) Select the fatigue stress concentration factor from Table 3 and give a reason for its selection. Select the weld location A or D with the highest stress (assuming that it is not possible to ensure surface contact of the bracket and column at the time of welding at location D, and using a diagram of the weld group and stresses). For the highest stressed weld location determine the midrange and alternating primary and secondary shear stresses (and hence the resultant shear stresses) as a function of h. (6 marks) (c) Determine the endurance strength Sse of the weld, and hence determine a suitable weld leg length h using the Modified Goodman failure criterion. What size would you specify on an engineering drawing? (6 marks) (d) If you were required to make a small change to the bracket so as to reduce the weld stresses considerably, what would you do? Justify your answer. (2 marks)