The maximum occupant load for any retail sales showroom shall not exceed one occupant per sixty square feet of gross floor area. The maximum occupant load may be increased to one occupant per thirty square feet of gross floor area if both of the following conditions are satisfied:
(a) A minimum of one means of egress approved by the building official and the state fire marshal is provided for each twenty-five occupants or fraction thereof.
(b) A minimum of three means of egress approved by the building official and the state fire marshal are located to provide direct access in separate directions from any point in the area served so as to minimize the possibility that adequate exit capacity would be blocked by any one fire or other emergency condition.