Bris, you are correct. That is the way I was taught but this is what I ran into:
First, I will paraphrase from HEC22;
at a structure, ie manhole, add the losses to the downstream energy grade then subtract the outlet pipe vepocity head to get HGL. Next step is to add pipe losses to HGL then...
Here is my situation:
Everything I can find in my hydraulics books from college show that losses are added to the Total Energy Grade, EGL. Then the velocity head is subtracted from that value to obtain the hydraulic grade elevation. This, in turn, produces a sloping HGL across a structure if...