topic Re: Level dimension for roof tool to current storey in Documentation

Level dimension for roof tool to current storey

Anonymous — Mon, 22 May 2023 21:52:21 GMT

Morning,

See attached pic.

I'm working on a reflected ceiling plan. I've used the roof tool to create my plasterboard ceiling lining. The ceiling is raked, and I'd like to dimension the pitch levels in plan view with reference to the current storey (marked in red). Any ideas?

Thanks in advanced.

Re: Level dimension for roof tool to current storey

Barry Kelly — Mon, 20 Apr 2020 01:09:23 GMT

So long as your ceiling (roof) has a cover fill active, you can use the Level Dimension Tool to place spot levels.
Beware though that this tool will dimension the upper level of your ceiling (roof thickness).

The text can be selected and moved and can be changed to measure from any of your reference levels.
The measurement will be (by default) from Project Zero.
If you need anything else (such as a second floor level) then you will need to set up a reference level for each storey - which won't help if you have more than 3 floors as you can't add more reference levels that what is already there.

If this is not acceptable then you will need to look into labels, but I am not sure there are any out of the box labels for roof heights.
I know there is a label for flat ceiling slabs, but I don't recall anything about a label for roof heights at any given point.

Barry.

Re: Level dimension for roof tool to current storey

emwatson — Thu, 08 Jul 2021 08:01:52 GMT

Hi,

I was curious if anyone knows of an update on this? I understand it wasn't that long ago that Barry responded. I am working on a project also with multiple raked ceilings modelled with the roof tool so using reference levels is not suitable. I wondered if anyone knows about the autotext labels ie. 'Offset by rules' or 'roof level' whether that could be utilised? I think it would be really handy to have the ability to level dimension roof undersides so keen to hear any input from others.

Thanks very much.

Re: Level dimension for roof tool to current storey

JaseBee — Fri, 09 Jul 2021 03:43:10 GMT

Any label attached to the roof doesn't know its position, so can only ever give you heights at the reference line.

I haven't implemented any real workarounds yet but I can only think of two in addition to Barry's suggestion.

An extra zero thickness roof to dimension spot levels to (bit crude, need to remember to move this plane as well as ceiling or errors ensue), or making your own label with the skylight tool (bit more advanced, need to know a. little GDL).

Good Luck.

Re: Level dimension for roof tool to current storey

emwatson — Fri, 09 Jul 2021 07:41:37 GMT

Hi JaseBee,

Thanks for your comment.

Yes we have occasionally done the 0 thickness roof on a separate layer so we can tag them in the RCP and then had the actual roof 'ceiling' which is a composite so it shows properly in section etc. I will look into the skylight tool label. I didn't know about that.

Cheers,

Re: Level dimension for roof tool to current storey

Podolsky — Fri, 09 Jul 2021 08:03:13 GMT

Theoretically it is possible to create GDL object (not label) that would receive geometrical data from roof and calculates then needed height or slope. The only way how roof can pass its geometrical data - via roof accessory. So it needs to be roof accessories tool. I used roof accessories tool to place falling indicator. I've got very handy tool.

Label doesn't work in this case, because it doesn't know nothing about roof position and roof shape.

Re: Level dimension for roof tool to current storey

JaseBee — Tue, 10 Aug 2021 01:47:27 GMT

The skylight tool is not an accessory, it's standard in the AC kit.

Make a new GDL part, set it's subtype to "Roof Opening"

Then the "GLOB_ELEVATION" global variable is the elevation at the origin of a placed skylight. (You can get the top elevation with some maths and "ROOF_ANGLE" & "ROOF_THICKNESS" if you need)

Then its just a case of using some GDL to make the skylight not a skylight and just a 2d note with whatever leader or marker or whatever you need it to be.

Good luck.

Re: Level dimension for roof tool to current storey

kmitotk — Tue, 10 Aug 2021 08:35:28 GMT

Not perfect but there is another workaround (without GDL knowledge).

Use the 3D view based 3D Document (not the plan based) and the dimension tool:
In 3d view, use 3D Cutaway and cut the model horizontally, setup a bottom view parallel projection and generate a 3D document. By using the Elevation Dimension in the dimension tool you can get the underside spot elevations of the roof element.

Limitations:
- Dimension tool can only read the height of the nodes (but you can add a node anywhere along the roof edge and get the height of that spot).
- The height dimension origin is limited to GL and other reference levels.
- The dimension marker won't update automatically when the roof moved.

Re: Level dimension for roof tool to current storey

runxel — Wed, 11 Aug 2021 08:44:49 GMT

JaseBee wrote:
The skylight tool ...
Make a new GDL part, set it's subtype to "Roof Opening"
Then its just a case of using some GDL to make the skylight not a skylight and just a 2d note with whatever leader or marker or whatever you need it to be.

Except that "text2" and others don't work in skylights? ...
Or what am I missing here

Re: Level dimension for roof tool to current storey

JaseBee — Thu, 12 Aug 2021 03:30:58 GMT

Really? Damn. that sucks.

Accessories it is then.

Or label the skylight

Re: Level dimension for roof tool to current storey

JaseBee — Thu, 12 Aug 2021 03:33:52 GMT

Ops, didn't mean to swear there, didn't know the filters here were set to the 1920's list of profanities...

Re: Level dimension for roof tool to current storey

Barry Kelly — Thu, 12 Aug 2021 03:40:45 GMT

JaseBee wrote:
Ops, didn't mean to swear there, didn't know the filters here were set to the 1920's list of profanities...

You are lucky 'sucks' got through.
That used to be censored as well.

Barry.

Re: Level dimension for roof tool to current storey

kmitotk — Fri, 16 Sep 2022 06:38:30 GMT

If you only need to indicate the heights of the highest and the lowest points of a sloped ceiling, then you can use the label tool with the following expressions (parameters in bold texts)

Highest point A: Top Elevation To Home Story-Thickness/COS(Pitch)

Highest point B: Top Elevation To Home Story-Thickness*COS(Pitch)

Lowest point: Bottom Elevation To Home Story

See attached screenshot.