There are totally 4 questions .i struggled for a whole day and i still cannot solve it.Please help me! For Question 1: My problem is that i cannot find out the reaction Ax,Ay,Dx,Dy though i establish 4 eqt: 1:Ax+Dx=90 kN 2:Ay+Dy=90 kN 3:summation Ma=0 ,anticlockwise positve -125+2Dx+5Dy=0 4:summation Md=0 ,anticlockwise +ve 505-2Ax-5Ay=0 For Question 2: i dunno what is the meaning of G=80kN/mm^2 and how to calculate the shear force? also, what is Bredt-Batho theory? My professor haven't mentioned it so far. For Question 4: The first load from left P=WL/5 is outside the Y-axis, does it mean that i can neglect it? to find the equation of elastic curve, do i need to establish the Moment equation for each section?