Sun Study - Neighbours Elevation

[Anonymous]

Hello,

we are wanting to cast shadows on the neighbors elevation, and to save this view without seeing our building.

This needs to be in an elevational view, not in a perspective view.

Has anyone done this and can you please share.

Thank you.

[Aaron Bourgoin]

Lazlo, Any word from GSHQ about the Japanese Overshadowing tool and it's placement as a Wish for voting? The wish has gotten an awful lot of votes.

Curious to know what the powers that be think about this.

[Laszlo Nagy]

I have forwarded this wish to Graphisoft HQ for their consideration.

[Steve Jepson]

@ fuzzymike2002,


no no no...all you have to do is copy the shadows from the 3D window and paste them in your drawing. You can split them or what ever is needed to show them with out what ever has generated them. Shadows can be separate.

This is an old technique I used to use for getting rid of the shadow contour lines.
When the shadows are pasted into the drawing you can edit the fill so there is not border line on it. You can make the fill semi-transparent using %fill.

This attached file is from some ArchiCAD Talk post I made many years ago I think when people were saying you can't do that. ?

[Steve Jepson]

Also a tip about sun studies in Australia- I made some of these a few years ago and it can be a difficult thing to do correctly and with any accuracy.

The problem is that magnetic north shifts around a bit and from certain places in Australia the variation is significant. To complicate matters, many of the old surveys were made with less than adequate survey equipment. This combination of things can make for all kinds of problems inputting the coordinates of the surveyors plan into ArchiCAD or other shadow generating programs and expecting a reliable result.

This problem causes many property line disputes, which is part of why you have to submit shadow studies in so many areas of Australia now. Neighbors are suing each other for casting shadows on their tomato plants, pools, etc... this is also a problem caused by lots that are so tiny. People are living too close together.

The remedy is to calibrate your ArchiCAD shadows using a real shadow at a specific time, and relative to a verifiable direction from current magnetic north.

Several building departments in Australia have a link or other data that can help you work out a consensus for what all parties concerned will agree to use as Project Coordinators. Kind of like we may use Project North for the purposes of the Plans and make some reference to True North.

Good luck with it. Be very careful or you may have to do it over again. Document everything, put plenty of disclaimers on the plan.
This is more of a problem in some area of Australia than others.

[Wokka]

Steve,
Yeah, thats why I always include a quick screen shot showing the project north and archicads sun angles and azimoths.
Also, you may have missed the idea of this post, the issue is shadows cast on a building by another building where council requires elevations, not perspectives or axonometrics. The limitation of ArchiCad is that you have to see the building for it to cast a shadow so the 'shadow casting' building is usually in front of the building that you need to examine.

[Anonymous]

fuzzymike2002 wrote:
Hello,

we are wanting to cast shadows on the neighbors elevation, and to save this view without seeing our building.

This needs to be in an elevational view, not in a perspective view.

Has anyone done this and can you please share.

Thank you.

Anyone know if we are so lucky to have this available in archicad 20...?

[Laszlo Nagy]

I am not aware of any such new feature in ARCHICAD 20.

[Wokka]

How unexpected... 😕

[alemanda]

I'm just working on a masterplan with shadows ...
How to copy only the shadows? I remember that with a marquee selection on a 3D view and hitting CTRL+C a dialog appeared asking what to copy onto the clipboard ...
Isn't working with a 3D document too?

[Erwin Edel]

3d document you can copy paste the whole view and use find and select to get the shadow fill if you define some unique fill for it. Can allways change it later.

I would use fill consolidation right after find and select, to merge all the touching fills, you'll end up with a lot of them.