AUGIWorld Magazine - May/June 2008 - (Page 16)

All in the family Figure 3 Of course Revit would not be Revit if there weren’t families involved! The new rebar is broken down a little differently than it was in the past. In the Project Browser, you can scroll down to see the way Revit breaks out the reinforcing based on Bars, Hooks, and Shapes. The bars are what we typically see as listed in the traditional numbering system…#4, #5, and so on. The hooks have special characteristics such as bend radius as well as an extension multiplier. This allows the user to specify an increment to the hook in a bar in the default settings. That way, when the bar is placed, the user knows the extension of the hook because of the parameter set in this dialog. The Extension is based on the rebar’s diameter * the extension + the bend radius. To get to these families, open the Project Browser, and scroll down to the area that categorizes Structural Rebar. From there, drill into the specific category you wish to alter. Once you see the exact bar hook or shape, double click on it. This will bring up type properties that cannot be accessed from objects in the model. The choices made here are propagated back to the model. Of course Revit would not be Revit if there weren’t families involved! is fully loaded with reinforcing, rules can be changed globally as opposed to piece by piece. If the user is adding items such as dowels, this can be a tremendous time saver. Simply select the structure and add the bar. If the shape or size of bar is not present, it is easy enough to drill into the Figure 6 Figure 4 Figure 4 in the concrete, but you cannot breech this perimeter. Once you place certain types of reinforcing from the list, however, you can stretch them into adjacent concrete systems tying the concrete together. Of course you can still choose the spacing of the rebar after you place the shape. 16 New bar types can be created in the new template for reinforcing bars as well. Go to File>New>Family, then to the 2D Rebar Shape Template.rft. In this dialog, you can create your own rebar family. This is recommended if you have a shape that is constantly recurring in projects. Don’t forget that shapes that are going to be used only in one specific situation can still be sketched right in the model in the traditional Revit format. Now when the user places rebar in the model, these rules and new families are going to be available. When the model family and create the new piece, or create a new family altogether. The image in Figure 6 reflects a new piece created to dowel in a haunched slab. Notice that the dowels and face reinforcing are extending beyond their actual host items. The ease of this has been greatly improved upon in 2009 as well. Eric Wing lives in Syracuse, New York. He has been teaching AutoCAD and Autodesk products for nine years. He has been in the construction and engineering field for 17 years. Eric is the AUGI Survey Manager and is president and founder of SLUG (Syracuse Local User Group). He has written articles for AUGIWorld magazine and writes a monthly column in AUGI HotNews. w w w. A U G I . c o m http://www.augi.com

Table of Contents Feed for the Digital Edition of AUGIWorld Magazine - May/June 2008

AUGIWorld Magazine - May/June 2008 Table of Contents The CAD Manager From Drawing to Display: The Value of Autodesk Impression Designing for Auto-Dimensioning The Proof Is in the Footing Managing Customization and Profiles Getting to Know the Display Manager What's Cooking at Autodesk Labs? On the Back Page

AUGIWorld Magazine - May/June 2008

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