The Room Specification dialog controls the structural characteristics and appearance of a selected room. To open the Room Specification dialog, select a room and click the Open Object 
edit button.
A value with Default checked is referenced from the Floor Defaults dialog. To return a value to the default, replace the check mark.
The General tab shows a cross section of the room, showing the various heights and platform thicknesses, including foundations, for the floors below the room you selected. The room in the above example has a foundation below.
What appears in the cross section depends on the current floor and the location of the pointer when you selected the room. Only two floors at a time display in the Room Specification dialog. If one large room on the current floor is positioned over a couple of smaller rooms, the position of the pointer relative to the smaller lower rooms determines which of the the rooms display as the floor below.
Select the Room Type. This affects some of the room characteristics.
Show Room Label - Select the check box to display the room label in floor plan view.
Floor Height - Specify the height of the subflooring above or below the default first floor height of zero.
Ceiling Height - Specify the ceiling height relative to the room's floor height. Ceiling height is measured from the top of the subflooring to the bottom of the ceiling framing.
Lowered ceiling - Specify the height for a lowered ceiling, measured from the top of the subflooring to the bottom of the lowered ceiling framing.
Stem Wall Height - If the room below is the foundation, specify the distance from the bottom of the floor framing to the top of the footing.
Floor Above Height - Specify the height of the subfloor for the floor above, measured from the top of the current floor's subfloor.
Ceiling Below -
The ceiling height for the floor below is shown. It may be defined here, or in the specification for that room. The values are linked.
Platform Thickness - The thickness of the floor platform assembly, including the subfloor and joists, displays here but cannot be edited. The platform thickness can be changed on the Structure tab.
If the material for the current room floor is Concrete, and floors and ceilings have been rebuilt since it was set to this, the Platform thickness defaults to the Slab thickness in the Foundation Defaults dialog, unless is was explicitly set in the Structure tab.
The thickness of the slab on the floor below (if any) is shown here, but cannot be edited.
Roof Group - Specify a roof group for the room. The program builds a complete roof plan for each set of rooms with the same Roof Group number. This roof plan is not influenced by any other parts of the structure where the rooms are in different roof groups. This number is nearly always left zero. Change this number to break off a structure so that the program does not automatically combine its roof system with the main building.
A diagram of the room is shown. The arrows indicate what part of the structure moves if you make changes in the corresponding box.
If Ceiling Over This Room is checked, the room has a flat ceiling. If unchecked, the ceiling follows the underside of the roof or ceiling planes.
If Roof Over This Room is checked, a roof automatically generates over the room. If unchecked, no roof generates.
Slab Foundation for This Room - Check this box to change this room's floor platform into a concrete slab. This slab gets its thickness from the Foundation Defaults dialog. See "Building a Foundation".
This option is only available if there is no room or foundation room under the selected room.
Floor for This Room is Supplied by the Foundation "Room" from the Floor Below - Check this box to make the current room similar to an Open Below room, deleting its own floor platform. The floor of the room below, which is often a room on the foundation floor, then supplies the floor of the current room. While the same thing could be accomplished by naming the current room Open Below, this method allows the current room to retain its normal designation as Living, Garage, etc. This is often used in situations where framed walls are built above concrete curb walls, such as in garages.
Subfloor Thickness - Set the thickness of the subfloor under this room. The default value for this is set in the Build Framing dialog on the Floor tab for the current floor (subfloor for floor "x"). Along with the Floor Structure Thickness, this determines the depth of the platform under this room.
When viewing framing, this Subfloor Thickness may be represented by a gap. To remove this gap, change the value to zero and rebuild the appropriate framing.
Floor Structure Thickness - Set the thickness (or depth) of the selected structure under this room. Together with Subfloor Thickness, this determines the depth of the platform under the room.
Floor Structure Type - Select the type of floor structure. Check Default to use the structure type specified on the appropriate floors tab of the Build Framing dialog.
Frame Lowered Ceiling - Check this box if you want the program to frame a lowered ceiling. Specify the thickness.
Insulation (cross sections only) - Check these boxes to generate insulation details in cross section views when the Autodetail 
tool is used. See "Auto-Detailing".
Insulation Above Ceiling - Check this box to generate insulation details above the ceiling in cross section views when the Autodetail 
tool is used.
Insulation Under Floor - Check this box to generate insulation details under the floor in cross section views when the Autodetail 
tool is used.
The options on the Deck tab are only available for rooms designated as decks.
Specify how far the deck planking Overhangs the rim joists.
Enter the Width of the deck planking.
Specify the width of the Gaps between the deck planks.
If you want to enter a Plank Direction, remove the checkmark from Default. Enter the direction as degrees.
Specify the Number of Border Planks. These are planks that follow the outside edge of the deck and may not be parallel with the rest of the deck planking. Border planks generate as long as the length of the inside edge is greater than 0".
Border planks are not generated for curved deck edges.
Check No Border Against Walls to prevent border planking from being generated along any walls defining the deck.
Check Herringbone to produce a herringbone pattern where the border planks meet.
Enter the depth of the joists that support the deck.
Specify the distance between joists. The default is 16" O.C.
If you want to specify joist direction, uncheck Default. Enter the direction as degrees.
Specify the depth of the beams that support the deck joists.
Enter the width of the beams that support the deck joists.
Enter the spacing between the beams that support the deck joists.
Chair rail, crown and base moldings can be assigned to a selected room on the Moldings tab. Moldings are placed around the wall surfaces of a room. They continue around the surface of any soffit that is attached to the wall at the molding height.
Previews of the selected Crown Molding, Chair Rail and Base Molding display in these panes. If no profile is selected, a flat profile is used.
Click the Library button under each type of molding to open the Select Library Object dialog and browse the Moldings and Profiles library and select the molding desired profile. See "Select Library Object Dialog".
Click the Clear button under a molding type to remove the selected profile from the room. Unless the molding Height is set at 0", a flat profile is still used.
Specify a Height for the selected molding profile. If no profile is specified, a flat profile is used unless the Height is set at 0". Molding heights can be specified in 1/16"or 1 mm increments.
A (D) following any value signifies that it is a default value set in the Floor Defaults dialog. If a value is not followed by a (D), replace it with "d" to reset it to the default.
Specify a Distance Above Floor for the molding type. Crown molding and chair rail are measured to the top of the profile while base molding is measured to the bottom of the profile.
The Wall Covering tab of the Room Specification dialog contains the same elements as the Wall Covering tab of the Wall Specification dialog. When a wall covering is assigned using the Room Specification dialog, that wall covering is applied to all walls in the selected room only. See "Wall Covering Tab".
| Wall coverings can be applied to exterior rooms as well by selecting the exterior room and opening it for specification. See "Selecting Rooms" for information about selecting exterior rooms.
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For more information about the Fill Style tab, see "Fill Style Tab".
For more information about the Materials tab, see "Materials Tab".
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