Mastering Autodesk® Revit® MEP 2011

Don Bokmiller with Marvin Titlow, Simon Whitbread

ISBN: 978-0-470-62637-5

Paperback

624 pages

October 2010

Mastering Autodesk® Revit® MEP 2011 (0470626372) cover image

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Chapter	Page	Details	Date	Print Run
	various	Issues related to the Properties Palette and Instance Parameters Throughout this book you will read about the placement and creation of face-hosted, or face-based families. The addition of the Properties Palette to Revit MEP 2011 has caused a change in the way some Instance parameters are handled when placing component families into a model. This issue was discovered after the final editing of this book. The problem that occurs is that default values for Instance parameters within families are not honored when the families are placed into a model. The most common example is the Default Elevation parameter, which exists in all face based families. This parameter allows you to assign an elevation for a component when it is placed on a vertical face. However, the placement of a face-based family will have a value of 0? 0? for the Default Elevation regardless of the value assigned in the family. This behavior can vary between families and projects so the user should be wary of this and take note of the Properties box when placing elements. The following behaviors have been recorded: When placing an element that is preloaded in your project template, Default Elevation is set to 0? 0?, even though family default is another value. When loading an electrical element into a new project based on a Mechanical template, Default Elevation is correct. When loading an electrical element into new project based on an Electrical template, Default Elevation is incorrect. When loading an element into an upgraded (from 2010) project, Default Elevation is correct. The Properties Palette gives you the opportunity to set the parameter value prior to placement of the family, but it will not use the value defined in the family itself on the first placement. Should the family have more than one type, selecting a different type can then display the correct default value. If you set a value for an Instance parameter in the Properties Palette during the placement of an object, Revit will remember that value for the next placement of families within the same category. Autodesk has realized that having to assign the elevation with each placement of a family is not the desired behavior and is working to resolve the issue.	10/6/10	1st