Discover how to utilize the revision cloud and delta-ing process during design development, a skill frequently applied in architectural drafting to highlight changes made to the initial design. You'll learn about choosing layers, creating a revision cloud, and defining the delta in the drawing, among others.
Key Insights
- Delta-ing drawings is a standard process in architectural drafting where changes made to the initial design are highlighted for review. This involves the use of revision clouds to mark the altered area and creating a delta to annotate the change.
- The process begins by selecting the accurate layer for the design. The revision cloud is then created using the 'draw' option and adjusting its arc length, reversing the direction if needed. A polyline is also drawn around the new elements, which in this case, are the columns.
- Creating a delta involves defining an attribute with the chosen tag and style, populating it at "00", and then drawing a delta triangle. The delta is then inserted as a block in the model file, given a scale factor and positioned accurately. The revision dates are then updated in the title block, ensuring it is referenced in all relevant drawings.
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The normal process for delta-ing drawings is that you work on your project, you submit the project to the regulatory agency for their review when you try to get a building permit. So they will take your work, they will review it, they will give you feedback, and then you normally have to modify your drawings to reflect that feedback. And then what you do is you put a revision cloud around the area that's been changed, and you delta the change.
We're going to be doing a process very similar to that, but again, we're in design development, so normally you would not be delta-ing while you're in design development, but I wanted you to get the exposure to the revision cloud and the delta-ing process. So I'm going to begin by changing my layer to my annotative 48. So over here in the layers, I have a selection option for make objects layer current, and I will then choose this entity right here, and you can see that I'm in the A. Anno Sims 48 layer.
What's new are the columns. So I'm going to begin by putting a polyline around these entities. So again, a rectangle is a polyline.
But what we normally do is we use revision clouds. Under the draw option is the choice for revision cloud. Now I'm looking at the revision cloud, and it says arc length object style.
It says object. I'm going to hit ENTER to select object, and I will choose this rectangle. Now you can see it's saying, do you want to reverse the direction, yes or no, and I'm going to accept the answer of no.
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Control S to save. I'm going to undo and show you something else. If I were to go back into revision cloud, another function is arc length.
If I were to say right button arc length, you can see that I have the arc length preset at a value of two feet in our template file. If I were to say the arc length is 18 inches and maximum length of 18, and if I were now to hit ENTER to choose the object and then select the rectangle, it has now made it so that the revision cloud arc lengths are 18 inches long. That would be from end to end.
We have gotten our revision bubble in the drawing, but now we need to create a delta, and the delta will be our revision annotator. So let's go file new, and let's use the template, and let's save this drawing in our CAD 301 folder with the name delta, and the delta is a very standard name that people will use for their revision deltas. So I'm going to go save.
I'm going to begin by creating an attribute, so I'm going to go to insert, and I will define an attribute. The name of the tag will be delta, the prompt delta. I'm going to leave the default value blank because, again, if we need to modify the contents of the revision bubble, we can always double click on the geometry associated with that.
I'm going to deselect lock position. I'm going to pop it in at 00, so I'm deselecting specify on screen. My justification will be middle center.
My style will be text 01. My height .125. So, again, I'm creating an attribute. The tag is delta.
The prompt is delta. The alignment is middle center. I'm using text 01.
The text height is an eighth of an inch, and I will be populating it at 00 and go okay. Zoom extends. Zoom real time.
Control S to save. We now need to draw our delta triangle, so I'm going to go to the home tab, and you can see right here that we have rectangle, which is a polyline, but if I expand that, I have an option for a polygon. So I'm going to be choosing a polygon, and I read the prompt.
It says number of sides. We're going to be creating an equilateral triangle, so there will be three sides. The center of the polygon will be 00, and then it's saying does it want to be inscribed in a circle or circumscribed about a circle.
I'm going to accept inscribed, and then it says what's the radius, and I will type in .25, enter. So I have a triangle whose base point is at 00. It's a relatively large triangle.
It's a half inch across, and I have my attribute in the middle, Control S to save. We now have our delta drawn, and I'm going to close the drawing. I am now back in my model file.
I'm going to go, whoops, look up here. I'm in my A201 file. I'm in the wrong drawing.
Again, this is another reason why when you're in drawings, the best thing to do is for your sheet files to be zoomed extents so that you can be easily confirming the drawing in which you're working. So I'm lucky that I caught that. So again, I do not want to do my work in the A201 file.
I need to do it in the model file. So I will go back to the model. I see that I'm on the annotative symbols layer, which is correct.
I'm going to go insert, bring in a block, go over to insert. I'm going to choose browse. I'm going to slide down and choose delta, the drawing that we've just created.
I'm going to go open. I will give it a scale factor of 48, specify insertion point on screen, okay. Here's my symbol that we're bringing in.
I'm going to place it right here, and the delta number is delta one. Zoom extents, zoom real time, save the file. I'm going to go back in my A201 drawing, and I'm going to be reloading the XRef.
So right button, reload XRef. You can see here is the revision cloud. Here is the delta.
But look over here on the right. This is where we track our revisions. So what I need to do is I need to go back into our title block file and to add in the text that shows today's date because this revision and the dates that are associated here link up with this revision delta.
So zoom extents, save the file. I'm going to go control O for open. I'm going to go open my title block file.
I will zoom into my revision area. And if you remember, this is all M text. So I will double click on the M text.
I will go to behind where it says one. There's the period. I will go space, space.
And we normally put in a calendar date for the date of the revision, but I'm just going to type in today revised. And I will close the text editor. Control S to save.
Zoom extents. Save again. And I will go back to my A201 file.
I will reload the xref. And you will see that I have that value right there. So what we've been able to do is respond to the client's request.
We've brought in the columns. We've put in the revision cloud. We've delted it.
And we've also updated the delta date here in the title block. So, again, since the title block is referenced throughout the sets of drawings, we now have that revision date on all of our sheet files.
