Tutorial – Conceptual Massing and Revit Structure _ Autodesk Revit Structure

Tutorial Conceptual Massing and Revit Structure | Autodesk Revit Structure

https://revitstructureblog.wordpress.com/2014/03/07/tutorial-conceptual-massing-and-revit-structure/[4/12/2015 4:39:38 PM]

Autodesk Revit Structure

Tutorial Conceptual Massing and Revit StructurePosted on March 7, 2014

Link to YouTube Video: http://youtu.be/aaBdlIoS5eI

In this tutorial I will take you through some of the tools you can use to create a masswithin Revit and then apply structural elements to the form. I will also outline someother possible workflows with other Autodesk software. Our target will be to produce asimilar model to the one shown below. In future tutorials I will also talk about correctingthe analytical model and preparing this for analysis.

The first step is to create the conceptual form, on the Application menu select theConceptual Mass command.

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The Conceptual Mass family does look a little different to the normal structural familiesthat you may create. You will see that the Reference Planes are visible in the 3D viewwhich makes them much easier to work with.

In the Project Browser double click the Level 1 Floor plan and create the Reference Planesas shown below.

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Once the Reference Planes are created then switch to the 3D view to view the planes in3D. You will now set one of the Reference Planes as the active Work Plane. As shownbelow, click the plane command and then select the front Reference Plane. You can alsoswitch on the visibility of this Plane by selecting the Show button on the Work PlanePanel.

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Next you create the first profile, Click the Line command as shown below and draw thethree required lines. Next choose the Start End radius arc and create an arc for the curvedroof, use any radius you want for this. Note that you may need to use the Tab key toselect individual lines and arcs within the profile.

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Repeat this for the second profile using the image below.

Next you create the 3D form, Select both the profiles and click the Create Form commandas shown in the image below.



Next you add an intermediate cross section to create a double-curved roof. Select thesolid by using the tab key to cycle to the solid form. On the contextual Ribbon you willsee the add profile tool, select this and add a profile roughly in the middle of the solid asshown below. You may also want to enable the X-Ray command which will enable you tovisualise the cross sectional profiles.



Select the middle arc and drag this up the Z-Axis to form the geometry as shown below.

You will now divide the top surface into a number of divisions. This is achieved byselecting the top surface and clicking the Divide tool as shown on the ribbon below. Notethat you will need to turn the X-Ray model off to see the divided surface.

In the Properties Palette you now set the pattern to a Rhomboid form and then set theMaximum Spacing to 2000 for the U and V Grids.

You have now successfully created the basic mass. Save this as ROOF MASS.rfa

Start a new Structural Project and ensure that you open the Site Structural Plan, this



already has the View Range set to unlimited.

Make sure that you have also switched on the Mass Category within Visibility/Graphicsoverrides dialog box.

On the Structure Ribbon, click the Component Command and then browse for yourROOF MASS.rfa file. You can then place this on the Work Plane.

Create a new 3D view and ensure that the Mass Category is enabled. You should now seeyour mass within this view. Next you create the structural framing.

Click the Beam Command and select a CHS section of your choice from the Type selectoras shown below. Note that you need to ensure that the sections are placed at the centre ofthe divided lines as shown on the Properties Palette.



You will now set up the Options for the beam placement. On the Contextual Ribbon andOptions Bar, set the following as shown below.

You can now start to select the divided lines and Revit will now add the 3D beams to thedivided surface lines. Note that you can use the Tab key to select panels to speed thisprocess up a little!



You will notice that the CHS sections appear to spring back from the nodes. This is dueto the Start and End Extension calculations. You will now edit the CHS family to rectifythis.

Select one of the CHS sections on your roof and click Edit Family on the ContextualRibbon as shown below.

Switch to the Floor Plan Ref Level and then use the shape handles to drag the extrusionfrom the inner Reference Plane to the Outer Reference Planes. This will then remove the;Spring Back that occurs in the project. Ensure that you lock the geometry to the outerplanes. Load the family into your project and the frame should update.



Hope that this has been useful for you.

LawrenceH

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3 Responses to Tutorial Conceptual Massing andRevit Structure

About lawrencehI am currently employed by Excitech, one of the largest Autodesk resellers inthe UK, to provide training and other services such as implementation andproject support to our clients. The main products I get involved with areAutodesk Revit Structure & Autodesk Inventor. My personal interests includeaviation, engineering and walking.View all posts by lawrenceh

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Truc H. says:July 21, 2014 at 8:12 pm

Hello Lawrence. In the step to edit the beam members in Edit Family to the outerreference planes from the inner reference planes, when I selected the rectanglefor the beam (I had hollow square section), it does not show shape handles toallow me to extend the length of the beam. Is there a step that Im missing?

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lawrenceh says:July 22, 2014 at 5:52 am

Its probably because the RHS section is still locked to the referenceplanes. Pick the RHS and then edit the sweep path, you will be able tore constrain the path to the correct work plane. Let me know if thisdoesnt work for you and Ill think of plan b!

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Truc H. says:July 22, 2014 at 5:48 pm

I managed to make it work! Using Revit 2014, I clicked EditSweep and then Sketch Path to adjust the lengths of twoperpendicular lines that correspond to the RHS section. Thankyou for your help!

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Tutorial – Conceptual Massing and Revit Structure _ Autodesk Revit Structure