topic Re: Spot Elevation define lower value in Revit Architecture Forum

Spot Elevation define lower value

SLE_MZ — Tue, 14 Jan 2025 13:05:54 GMT

Hi,

Spot Elevation (FLOOR PLAN) families have the option to show upper and lower value. Is there a way to control the lower value?

I would like to in two ways:

A: Upper should show project base point and Lower survey.

B: Upper should show floor finish (level) and Lower floor construction top (core top).

As of now it shows UK and OK of floor based on either both survey point or project base point according to floor total thickness.

Any Idea?

Re: Spot Elevation define lower value

RDAOU — Tue, 14 Jan 2025 14:49:21 GMT

@SLE_MZ

You cannot combine both references in the same annotatation. It is either/or

You can workaround that by creating multiple types and overlaying them:

The type you use for Upper set to Project Base Point
The type you use for Lower set to Survey Point
The Type you use for Levels, use Relative and after placement >> Go to the properties panel and define the level desired

Then combine as you wish

Re: Spot Elevation define lower value

SLE_MZ — Tue, 14 Jan 2025 14:11:31 GMT

Hi thank you for your reply but I'm referring to the lower elevation as seen in the pictures from first post and this post. where is it defined as to where it get its info from?

Re: Spot Elevation define lower value

SLE_MZ — Tue, 14 Jan 2025 14:28:16 GMT

Even if I can't combine types. Is there a way to control the lower value (like minus 15 from top or hight of floor core) not bottom. In FP i usually want to show how think the floor filling is to pass piping etc but don't care much for total thickens that can be seen in section.

Re: Spot Elevation define lower value

RDAOU — Tue, 14 Jan 2025 14:41:31 GMT

@SLE_MZ

You need to be using a type which is relative, and you need to have a level/ebene for the OKFF another for the OKRD and a 3rd for UKRD

Once you place the spot elevation you can select wo which level/base it is relative to; however,

if you are using top and bottom in the same spot annotation, both will be relative to the same level
if you want them pointing to two separate RB you need to overlay 2 annotations (see the second image from previous reply)

Re: Spot Elevation define lower value

SLE_MZ — Tue, 14 Jan 2025 15:01:11 GMT

Hi sound like an idea. But how do I set the relative value to floor core? it only allows me to set relative to specific floor level that is a floor finish

Re: Spot Elevation define lower value

RDAOU — Tue, 14 Jan 2025 15:20:18 GMT

That’s how datum’s are…same principal as the levels. Coordinates are measured with respect to SP/PBP or relative to another datum elements and not geometries/objects

It is not quite common to have a level at the top of the structural slab and one at the bottom but If you want it to report elevation relative to the center line of the structural core, you would need a level there.

Re: Spot Elevation define lower value

SLE_MZ — Tue, 14 Jan 2025 15:32:23 GMT

Thank you.

Its needed especially for floor plumbing (once sloped the hight from core grows) and heating they want to know how much hight they have for installation.

I saw a workaround someone said to create two floor types one for core and one for all the finishes and then when you choose to show top and bottom elevations it will show the ones related to the top and bottom of finish like I want. but that means to change the whole way I model.....I know in walls you can split surface to reveal core but not in walls.

Re: Spot Elevation define lower value

SLE_MZ — Tue, 14 Jan 2025 16:00:20 GMT

May be helpfull for some. instead of doing a sublevel or splitting the core floor and floor finish. I made a mini slab of just the finish height. placed a spot elevation that shows top bottom and then hid the 'frame' or mini floor finish with invisible line.

Re: Spot Elevation define lower value

RDAOU — Tue, 14 Jan 2025 16:02:43 GMT

That is what I said in the previous reply. multiple levels are a must (OKFF top of finish floor, OKRD/top of structural floor, and UKRD bottom of structural)

It is not a workarounds, it is a common practice. You use 2 floor slabs like it normally would be.

first floor element for the structural core (not sloped) and you would have the OK and UK levels for this this is usually modeled by the structural engineer
second floor element for the…set to variable to you could slop the top and maintain a flat bottom

Nonetheless, regardless of how many floor elements u use, you can use one floor element for all but you would still need the level datum to act as a Relative base. You cannot do it with one level for all disciplines

And you do not need to create views for all those levels and you can filter them not to show in sections and elevations if they bother u