[1] No. The provision applies solely to floor areas adjacent
to the horizontal exit. I don't really understand what the
term "all" in the question means. Adjacent is defined as
"lying near, close, or contiguous; adjoining; neighboring". A
space on the same floor as the horizontal exit may not be
adjacent to the horizontal exit. [2] No. See answer to one. We
are not talking about all areas on the floor, but floor areas
adjacent to the horizontal exit. [3] No. You have 100 feet of
hose from the connection and the 30 feet allowed for the hose
stream to contend with. Item 1 of the Section requires the
hose connection to be located at an intermediate floor level
landing between floors.