where is the cut line

huangyhg

where is the cut line
i am having a discussion with my boss about where we place a plan "cut line" on a structural plan.  the issue arose when we made the drawings for a plank and block school building.  here are the arguements:
me:  i believe the "cut line" plan doesn't actually exist on a a bearing wall structure.  instead we are actually seeing a "reflected" plan.  therefore, we are showing what is above as solid and cutting what is supporting above.
boss:  my boss subscribes to the architecture practice of placing the cut line above the floor 42" and only showing the walls above the plank.
my problem is (2) fold.
1.)  if i show the walls above the plank, one would have to flip back pages to see the walls where the plank bears.  in addition, openings shown on the plan actually happen above the plank, therefore do not affect the plank shown on that specific drawing.
2.)  the bigger problem is, i disagree with my boss.  i realize that i have to do as i am told.  however, in previous projects of this nature, i used the "show walls below plank" method and did not have a problem, so i know it works.
any information about technical drawaing standards for structural drawings (as opposed to architectural drawings)would be appreciated. my feeling is that structurally we are actually showing a "reflected" plan, not a "cut" plan.  
i welcome the discussion!
i agree that a structural plan should show the supporting structure, whether walls or beams. this could be done as a reflected plan, which i've used before, or as dashed lines (hidden detail), which is used where i work now.
reflected plans may tend to confuse some contractors.
we show all the supporting walls below the floor structure and we also show the walls above if they are load-bearing walls for the structure above.  
in many cases they are the same, but when they differ greatly, you need to be sure to somehow show which are above and which below.
paritions are either not shown, or shown half-tone.