Grid Setting Out Point (SOP)

As described in Hierarchy, elements must be created or placed in a strict order:

A datum can only be owned by a Zone element in the design hierarchy and a SOP can only be owned by a Zone or a Structure (Stru) element.

The SOP and Datum are the points from which all reference grid lines are calculated.

The user must first create a SOP.

The HVAC application incorporates design aids which help position ceiling tiles representing inlet/outlet grilles based on a horizontal grid layout.

1. Navigate to the zone under which the reference grid and tile layout are to be created and then use the facility in the following three stages (in the order shown):

   1. Specify a setting-out point (S.O.P.) to represent the datum from which grid line positions can be calculated. To do this, select Utilities > HVAC Tiles/Layout > Setting Out Point.

   2. Create horizontal lines at specified intervals, referenced from the setting-out point, extending over a given rectangular area. To do this, select Utilities > HVAC Tiles/Grid Layout > Grid from S.O.P.

   3. Add tiles at specified positions in the plane of the. To do this, select Utilities > HVAC Tiles/Layout > Apply Tiles in Grid.

2. Create a SOP, the reference grid will radiate out from the SOP.

3. The setting out point (datum) can only be created below a Zone element, the datum is created as a structure element followed by a DISH element.

   

   Note: The setting out point can only be created using the 2D cursor in the orthogonal view (plan view), change the view to the plan view, from the main menu select View > Plan > North, South, East or West.

   The setting out point (datum) from which all grid line positions are calculated, and must be created first.

4. To create a setting out point, from the main menu, click Utilities > HVAC Tiles/Grid Layout > 1. Setting Out Point to display the HVAC Grid Setting Out Point window:

   

   The HVAC Grid Setting Out Point window names the datum and specifies the elevation of the datum from the floor plane.

   Note: The datum or setting out point can be placed at a random point and then moved to its exact position as required.

   S.O.P. Name	Input the name of the Setting Out Point (SOP).
   Setting Out Point Height	Input the elevation of the datum from the floor plane.
   OK	Select OK to close the window and to identify the point at which the datum or setting out point is to be created.
   Cancel	Select Cancel to close the window and discard inputs.

5. You are prompted to Use the 2D cursor to position a datum in the 3D graphical view, the datum or setting out point is created and can be seen in the 3D graphical view and in the design explorer as a DISH element.

   

6. As it is often difficult to position the S.O.P. at the center of a plane, use the Explicit Position window to position the S.O.P.

7. From the main menu, select Position > Explicitly (AT).