If you have had issues in the past trying to control a void or voids in families to cut, or not to cut solids, this is the perfect trick to add to your arsenal. So, once Revit users have created a floor in Project Environment, they should jump to Family Editor. It does have some advantages over 'Face-Based' families that also allow you to cut into a host element: I hope this saves time for anyone who cannot get this feature to work properly. "Cut with Voids When Loaded: When selected, voids created in the family This year there is no fanfare about the release of Revit 2016 – not even from Autodesk. . Subscribe for new videos twice a week! Revit users before selecting the newly created family, should first select ‘cut geometry’ tool and then select a floor. When this new feature appeared in Revit about 10 years ago (v2012? [Edit] If you dig deeper in the Autodesk Help files under 'Cut Geometry' , it does have an updated list of categories that can be cut by this method: "You can cut objects in a project when a family with unattached voids is loaded. For creating the family with the void, let’s use ‘Metric Generic Model’ template. 4 Advantages of Outsourcing your MEP BIM Requirements. Objects For So, what is this family property that shows up in the Family Editor in Revit? Revit doe... Over the years I have defined quite a few Revit custom hatch patterns, and each time I do it I get a headache! Select the object to be cut. The solid extrusion will go above the reference plane; however, the void extrusion will go below the reference plane. So for keeping the family simple, let’s include only two elements in it, solid extrusion and avoid extrusion. 1 Input. To cut objects in a project using voids in the family . Except the topo continues through the house. will cut through solids". Revit Tutorial - Calculating Cut / Fills Using Building Pads Labels: cut and fill , cuts , fills , revit tips , revit topography , revit tricks , revit tutorial , topography Pablo, my colleague and friend from sunny San Diego, emailed me one day asking about cuts and fills in Revit. So I'm trying to do the topo for my backyard, and I've never done topo before (I work for a structural engineer, so I use Revit Structure also). It's more like imitating than converting. This happens when there are multiple toposurfaces occupying the same physical space but on different phases. In Revit, custom components are created by So, I'm in a file called Adding Voids, and I've got my four windows tiled: my Floor Plan, …my 3D View, and a Front and a Left Elevation. Revit does not export the topography as a solid to STL format so AutoCAD is used to transform the Topography into a Solid object that can be exported to STL. A couple of remarks. Can't attach AC families at) It's better to be converted to make use of it in Dynamo. by using Revit’s Family Editor. In fact, they must be It hardly explains much about how to use it. This is typically dam constructions or other objects that need to fit to a rock surface. Open the Revit family with unattached voids and click Create tab Properties panel Family Category and Parameters. In this series, there's a little something for every Revit designer—beginners and seasoned users alike. Select the geometry you created in Step 3. Save my name, email, and website in this browser for the next time I comment. The only workaround that I have found is to use the Split Surface tool, cut the shape of the hole (pad) and then delete it. … And like we did in the Adding Solids movie, I want to take these solid forms and go to …the sunglasses and temporarily hide those, just to get them out of my way for a moment.… project. It is common for architects to need to calculate, check and record escape paths or egress travel distances in a building design. If you dig deep you might find more information - but there is no link to it. Create negative geometry (voids) to cut solid geometry with the Create Void tool. Specialty Equipment (not listed in the help file or tooltip), The first one to cut elements in the family, The second one to cut elements in the project. that can be cut include: Walls, Floors, Roofs, Ceilings, and Structural floor when it is loaded into the project. Revit dynamo – Create void based on a curved wall – example 3 1 Input In this example, we are selecting the face of the wall to create a void, the void created will cut all the protruding walls. have observed that ‘Cut with a void when loaded’ parameter is contained ceilings, floors, generic models, roofs, structural columns, structural using this crucial parameter quite often while creating parametric or Furniture (not listed in the help file or tooltip). report. Furniture, Specialty Equipment, and Generic Models.". Click in the drawing area, and draw a closed loop that intersects solid geometry. Transaction Group and Regeneration for InstanceVoidCutUtils. Above is yet another 3D view, showing the section box cutting the elements in another direction, to display the topography on top, trees and the void through the topography… In this example I have carefully made the void slightly bigger than the basin for clarity in the illustrations - and to make sure that water runs down the side of the basin into the casework and rots the timber. NB. I had forgotten about that trick of creating a solid and changing it to a void. Only when the form is finished, I change it from Solid to Void in the Properties Panel. Click in the drawing area, and draw a closed loop that intersects solid geometry. I am sure most of the technicians or So I decided to revisit exactly how to make it work: Once you understand those rules and limitations, you can use this capability to get families to selectively cut elements in a project. Revit users should now develop a simple family that contains a void This is sometimes referred to as turning off Void visibility, which is misleading. In Revit the tool-tip is pretty much the same, although it does at least have a diagram that shows why you might want to use it: This is a classic example of inconsistency in help and tooltips. Select the closed loop. Select the closed loop. It should say "may cut. Thanks for taking the time to put this together. The face you select can in practice be all types of surfaces and all kinds of voids […] Revit users should now develop a simple family that contains a void by using Revit’s Family Editor. ... Topography settings and graphics ... Video: Controlling void cut behavior in the Family Editor. custom components in Revit. Lowest point on the topo (-1000), here we establish the bottom level surface will be on, we want it to be … Revit reports the values by making a comparison between a surface from one phase and, from a later phase, another surface whose boundary lies within the earlier surface. The following categories can be cut by voids: In this blog, I am going to tell you, what this particular parameter is actually used for? Once both ‘cut geometry’ tool and floor is selected, it’s time to select the newly developed family. Following my earlier blog post on Cut with Void When Loaded in Revit, I have discovered another subtle exception to the rule:. Every other phase shows the pad cutting a hole in the toposurface except for the Existing phase. The floors and walls are already modeled but I'm quite new to the massing side of things in revit. Click Modify | Lines tabForm panel Create Form drop-down (Void Form). example, let’s create a section of floor and see if it can be cut by our Pretty straightforward input value, just pick the toposurface you want to create a void of. share. Place the family in the project in a location where the void intersects with an element in the model The element will not be automatically cut Use the "Cut Geometry" command Select the element to be cut, then the family with the void in it I remember during beta testing that we asked for the ability to cut holes in worktops using this new feature - worktops are usually in the "Casework" category, which was not included in the list of cuttable categories. ‘Cut with a void when loaded’ parameter in Revit. Click Modify tab Geometry panel Cut drop-down (Cut Geometry). We looked at a nice example of using Boolean operations and InstanceVoidCutUtils back in the year 2011, cutting out part of a beam using a void cutter family. I don't create voids by using "Create Void" but by just creating a solid form, like Extrusion. I recently had a requirement to use this "new" feature in a Revit family - but I could not get it to work. Ammo: Cutting Objects to Topography I've worked with Revit as a modeling tool for quite some time now and every now and then I face the need to cut objects with a topography. Note: Select Multiple Cut on the options bar to select more than one element to be cut by the void. Each video focuses on a specific tip, trick, or troubleshooting technique within Revit. . A void form extrusion is created. Your email address will not be published. Pluralsight is now only $29/mo. . Is BIM collaboration the key to a successful onsite construction? family that contains void and ‘Cut with Void When Loaded’ parameter. Link to blogpost: http://jbdynamo.blogspot.no/2015/11/ammo-cutting-objects-to-topography.html Well, the main purpose of using ‘cut with the void when loaded’ I figured out how to copy perspective views between Revit projects a few years back. ), it was always a bit mysterious - it had many confusing restrictions about how and when you could use it. You may like to check out our Revit content creation services here, Your email address will not be published. To show how this parameter works, let us first create an A void form extrusion is created. For creating the family with the void, let’s use ‘Metric Generic Model’ template. hide. Luckily it was added as a further enhancement a year or two later - but Casework does not appear in any lists from Autodesk, even though it was used in this illustration. family that contains a void. This family should be able to cut the foundations, structural framing, and walls.". The process of cutting a solid architectural element by a family that contains Void, by using ‘cut with a void when loaded’, This completes our process! You have to create the void in a location where it does not intersect any geometry, then move it to the correct location - it will, 2. I was also not correct about being unable to save a family with only a void in it - that sometimes happens with in-place families but not in this situation. I will change the blog post accordingly. This helps Revit users in cutting floor with the assistance of a using its Family Editor. Now go to the properties panel and checkout and select the parameter ‘cut with a void when loaded.’. On the Create tab Draw panel, select one of the drawing tools. architectural element that will be later on cut by our family. Data Clip Boundaries in Civil 3D "It is also not up to date with its category list. Hey guys just a quick question about creating mass and using it to cut voids through Roof, floors and walls. here a sketch example to explain it better. The Revit Less Travelled - tips and tricks. (Optional) Click Modify | Form Element tab Form panel (Solid Form) to convert this void to a solid. … Create a void based on a topography in Revit, through dynamo. will cut through solids. parameter is to cut solid architectural elements when loaded in a Issue Before Revit 2021, controlling voids in the families’ geometry was very challenging, especially, when setting them up to cut, or not to cut a solid, or the host, all in the same family. Notice the cursor changes shape. … I'm going to do this work in the Floor Plan view. Required fields are marked *. in Family Template files which are Model-based. Create a solid block. Or create a solid where you want it, and change it to a void - it won't cut unless you tell it to [, You can decide whether you want individual elements to be cut or not, It does not need to be hosted  - it can be placed directly in the model with its own parametric controls (height etc), It can be moved away from or to an element to be cut (it remembers the cutting status if moved away and back), This can be added to existing families (converting to face-based requires recreating families), The void can be anywhere in the family - it does not have to be related to a host face in the family (as face-based families do). It is not a surface or solid but Mesh. Click Modify tab Geometry panel Cut drop-down (Cut Geometry) and select the void you created. Hi Simon, you are quite right. Click Modify | Lines tab Form panel Create Form drop-down (Void Form). 1 comment. Revit 2016: Cut and Fill Calculations; Revit 2017 - How to adjust your Cameras field of view; Revit 2015 - Toposurface Point File Issue; Where can I get the Site Designer Add-in for Revit 2021? I have walls up, and have surveyed, and as I put in the elevation points in the topo, everything looks right. Topography geometry is different from most of others in Revit. . Problem solved? Our Project Template contains a box-like Generic Model as void to cut away parts of elements that cannot be cut away using one of the appropriate tools, like Shaft.You write: "You have to create the void in a location where it does not intersect any geometry" and: "The family must contain a solid element in addition to the cutting void - Revit won't let you save it if it does not)"Both have never proven to be an issue with me? Revit Building Pads, Topography and phases November 26, 2012 May 7, 2017 Luke Johnson Basically, if you have one site toposurface, and you cut it with pads in different phases, then an ‘outline’ around every single pad appears in the creation phase of the toposurface (they affect the topo backwards in time). It does not work properly with the new Revit 2021 feature "Void Cuts in Family Geometry" that allows you to turn the 'cutting capability' voids on/off in a family. Revit can report cut and fill volumes on a site to aid in determining the costs of landscape modification during site development.. Video: Calculate Cut and Fill Volumes. I suggest that you make it a closer fit or use lots of silicon to seal it. In the Family Category and Parameters dialog, select Cut With Voids when Loaded and click OK. Load the family into the project and place it. 1. That may be to the way I create Voids. On the Create tabDraw panel, select one of the drawing tools. This family should be able to cut the floor when it is loaded into the project. 2 more input values will appear under number 3. Escape Path / Egress Travel Distance Component, A void form has to be created in a Revit family, Place the family in the project in a location where the void intersects with an element in the model, Select the element to be cut, then the family with the void in it. I tried to make use of this again in a recent Revit API training and was somewhat shocked to discover that it did not work as expected. Thanks for alerting me. An Architect wants to print the Toposurface around a house that has been designed in Revit. That's it - all the help you will get from Autodesk on this one! Useful! Revit users working in Engineering Design firms must be well aware of That's why it behaves a bit weird in Revit.(eg. So while working on Family Editor, you must So once the family containing the void is created, Revit users should save it. It is inaccurate in that it says "voids . Framing, Structural Columns, Structural Foundations, Casework,

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