The Edit Room Label commands are used to modify the labels that appear on rooms on the drawing. Each row that is displayed is included in the label in the order listed in the table.
To edit room label project settings, go to
Ribbon: DME: Customization->Project Customization-> 
Room Label Group
Pulldown Menu: DM Electrical->Customization->Labels and Schedules->Project List->Edit Room Label Project List
To edit room label standards settings, go to
Ribbon: DME: Customization->Master & Standards Customization-> 
Room Label Group
Pulldown Menu: DM Electrical->Customization->Labels and Schedules->Standards and Master Lists->Edit Room Label Standards List
Room Label Display and Order Dialog Box
See the Common Label and Schedule Information section for more information about using the Move Up and Move Down buttons and the Key, Number, Label, Width, and Display fields.
Run the Update Room Labels command after changing the room label settings to update room labels already inserted on the drawing.
Values in the Key column are listed alphabetically below.
Area: The area of the room based upon the room outline inserted on the drawing, in square feet.
CU: The coefficient of utilization of the room. This value includes the coefficient of utilization for the light fixtures and all depreciation factors.
CU = Coefficient of Utilization * Lamp Depreciation * Dirt Depreciation
FC Actual: The actual lighting level in the room, measured in foot-candles.
FC Actual = Total Lumens * Coefficient of Utilization * Lamp Depreciation * Dirt Depreciation / Area
Total Lumens: The total lumens for all of the light fixtures in the room. The light fixtures in the room are based upon the light fixtures inserted on the drawing. The lumens for each light fixture is based upon the Number of Lamps and Lumens / Lamp values set in the Light Fixture Project Schedule.
Coefficient of Utilization: If the IES file associated with the light fixture callout is well-formed, it can be used to calculate the coefficient of utilization. It is based upon the IES file (see the Light Fixture Project Schedule section for more information), the room cavity ratio based upon the room outline inserted on the drawing, and the Wall Cavity Reflectance, Effective Ceiling Cavity Reflectance, and Effective Floor Cavity Reflectance (see the Edit Rooms and Room Project Schedule sections for more information).
If the IES file is not well-formed and cannot be used to calculate the coefficient of utilization, or there is no IES file, then a default value of 0.7 is used.
Lamp Depreciation: See the Light Fixture Project Schedule section for more information.
Dirt Depreciation: See the Edit Rooms and Room Project Schedule sections for more information.
Area: The area of the room based upon the room outline inserted on the drawing.
FC Desired: The desired lighting level for the room, measured in foot-candles. This value is specified in the room itself or in the room type. See the Edit Rooms section for more information.
IC: The illuminance category specified in the room project schedule. See the Room Project Schedule section for more information.
LPD Actual: The actual watts per square foot in the room. This value is based upon the area of the room and the light fixtures inserted in it.
LPD Allowed: The watts per square foot allowed in the room specified in the room project schedule. See the Room Project Schedule section for more information.
Perimeter: The perimeter of the room based upon the room outline inserted on the drawing, in feet.
RCR: The room cavity ratio of the room.
RCR = (Ceiling Height - Workspace Height) * Perimeter * 2.5 / Area
Ceiling Height: See the Edit Rooms and Floor List sections for more information.
Workspace Height: See the Edit Rooms and Room Project Schedule sections for more information.
Perimeter: The perimeter of the room based upon the room outline inserted on the drawing.
Area: The area of the room based upon the room outline inserted on the drawing.
Type: The type of the room, taken from the room project schedule. See the Edit Rooms and Room Project Schedule sections for more information.