Ive got a beam that I cant seem to calculate the loading of. Lets say beam ABC supports are at A & B, BC is a cantilever. There is no wall on AB, but there is a wall on BC. Now I have tried breaking it up into separate parts, but does not look right. I was taught the method of triangles and trapezoids, depends on what side (long or short) of the beam you are working on. Any one with advice or maybe a reference for me?