Can someone please help me comprehend?:
Level 4 = 66.250
Level 5= 69.190
I have a Lift shaft overrun roof that sticks above Level 4 by 1700mm with a covering slab – Generic 200mm. Therefore the distance from the top of slab to Level 5 = 1265mm.
The Level 5 view range parameters are all associated with Level 5. The Top & Cut Offset Levels are 600/300 respectively.
The problem is I can only get the lift shaft roof slab to not be visible if I set the Bottom Offset to only -45!
With it set to this value the View Depth Offset works as expected, showing the slab if at -1265 or lower, but if I amend the Bottom Offset to anything lower than -45 changing the View Depth makes no difference!
What am I not understanding?
Cheers
Dave F.
In level 5 plan view, do you want to see the slab that covers the shaft, or not? If not, where are you going to show that slab? In Level 4 floor plan? That needs to be clarified. I would show the walls of the shaft at the level 4 floor plan, and the slab at the Level 5 floor plan, but it depends how you want to show it.
Thanks for the reply, but I'm not sure of it's relevance to my Q. I know where I want to show the slab & I thought i made it clear, but that's not what I asked.
I'm trying to understand why the Bottom offset has to be set to only -45 to get it the slab to hide seeing as the slab is over 1200mm below that.
Dave F.
Hi
Just to be clear, my previous reply was directied to Alfredo.
ccolins, I've seen this image before, but I still don't see the significance of the 45mm. If I set both the Bottom & View depth to -500mm the slab still displays even though it's well below that level.
Well, the question is relevant, because depending on what we want to show, is how we set a view range.
Hi Alfredo
"The problem is I can only get the lift shaft roof slab to not be visible if I set the Bottom Offset to only -45!"
Are you able to help with my query?
You can always try using a Plan Region to set the View Range, in a limited area just where needed
independently of the main view.
Hi
Yes, ccollins, that's one of a few work arounds to hide it that I've considered but according to the sketch you posted, as it's below the bottom/view depth I shouldn't have to do any workarounds.
See illustration.
Thanks
That clarifies what's happening, but I'm still not sure why. As I said in my previous post, if the Bottom & VD are set to -500 the slab *still* shows. From all the web pages/help files I've read this shouldn't be happening.
Are there any other settings that cause the View Range to have different characteristics?
here's a great tutorial som explains most of it:
http://paulaubin.com/blog/revit-view-range/
hope it'l help 🙂
@Anonymous wrote:Thanks
That clarifies what's happening, but I'm still not sure why. As I said in my previous post, if the Bottom & VD are set to -500 the slab *still* shows. From all the web pages/help files I've read this shouldn't be happening.
Are there any other settings that cause the View Range to have different characteristics?
There is, indeed, something very strange about those view range settings, maybe a bug which seems to affect only slabs. If I place a structural column and a structural wall with their top set at the same height of the top of the slab, the column and the wall are hidden by those view range settings, as expected, but the slab still shows.
Alfredo_Medina wrote:
DaveF. wrote:
Thanks
That clarifies what's happening, but I'm still not sure why. As I said in my previous post, if the Bottom & VD are set to -500 the slab *still* shows. From all the web pages/help files I've read this shouldn't be happening.
Are there any other settings that cause the View Range to have different characteristics?
There is, indeed, something very strange about those view range settings, maybe a bug which seems to affect only slabs. If I place a structural column and a structural wall with their top set at the same height of the top of the slab, the column and the wall are hidden by those view range settings, as expected, but the slab still shows.
This is not a bug, it is expected behavior. Floors have a slightly different behavior with respect to view range. That is what you are seeing here. A floor object outside of the primary view range is still displayed if it is within 4' (or approx 1.22m) of the bottom of the view range. Quoted from the wikihelp topic on view range:
" Model elements located outside of the view range generally are not shown in the view. The exceptions are floors, stairs, ramps, and components that stay or are mounted on the floor (like furniture). These are shown even when slightly below the view range.
Fascia, gutters, and slab edges are shown when their bottoms are within a tolerance of the primary view range bottom.
Floors located outside the view range use an adjusted range that is 4 feet (approximately 1.22 meters) below the bottom of the primary range. Floors are drawn with the Beyond line style if the floor exists within this adjusted range. "
I think this explains what you are seeing with this condition.
You can review the topic on view range at the wiki help for further information.
Ahh, excellent, Jeff. That was the reason for this display issue. Thanks!