Determine the reactions at the Supports of a overhanging beam

  SOLUTION: Total load = 20+40+20+5×3 = 95kN Taking moment about A RB × 4+20×1= 40×1+20×5 +(5×3)(3/2+2) RB×4 = 40+100+ 52.5 – 20 = 172.5 RB= 172.5/4 = 43.125kN RA = total load – RB = 95 – 43.125 = 51.875kN