topic Modeling a Difficult Barrel Roof in Modeling

Modeling a Difficult Barrel Roof

Anonymous — Tue, 23 May 2023 13:07:11 GMT

I'm some of you may be sick of me already, but again tried searching for past answers but not really found anything applicable (although I may be blind). I'm trying to model a complex barrel shape roof of a train station. I've included a plan (google earth) and some reference pictures.

If you have any ideas and possibly explain your answers as am new to the program i'd be grateful.

Thank you for your time,

Richard

Re: Modeling a Difficult Barrel Roof

Steve Jepson — Mon, 17 Nov 2008 20:27:37 GMT

If I were modeling that roof I would model the individual parts of the roof and use them to construct the model.

If you are only trying to make a preliminary model for graphic presentations or something, then there are several other ways you may want to make it for for some specific view or purpose.

What are you going to use the model for? Working drawings? Renderings... how you model it will depend on what you need to do with the model.

Re: Modeling a Difficult Barrel Roof

Dwight — Mon, 17 Nov 2008 20:40:47 GMT

Draw the section as a Complex Profile.
Extrude the profile along a spline or simply draw it as a wall.

And all words come from the Greek.

Re: Modeling a Difficult Barrel Roof

Anonymous — Mon, 17 Nov 2008 21:04:14 GMT

Dwight - Thank you, I will try your method and post back the results. If you noticed on the plan the width of the barreled section also varys along it's path will your method produce the same effect?

Steve - I'm at university and have been set the task of block modeling a section of Liverpool City Centre. A fly through will be created from there, with various rendered images on a presentation boards.

Thank you everyone for your time and effort,
Rich

Re: Modeling a Difficult Barrel Roof

Steve Jepson — Mon, 17 Nov 2008 21:08:24 GMT

Sounds like fun. It would be great to fly in one end and out the other.

There is a similar train to what I have seen in Liverpool in the ArchiCAD transportation library if you need it. I hope you will share the flyby with us when its finished.

http://sketchup.google.com/3dwarehouse/search?tags=Liverpool

Re: Modeling a Difficult Barrel Roof

Dwight — Mon, 17 Nov 2008 21:21:32 GMT

oops. To taper that to the LOD you need, moosh two 1/2 barrels together using a fake flat part to do the varying overlap

Re: Modeling a Difficult Barrel Roof

Ralph Wessel — Tue, 18 Nov 2008 18:10:38 GMT

richgwilt wrote:
I'm some of you may be sick of me already, but again tried searching for past answers but not really found anything applicable (although I may be blind). I'm trying to model a complex barrel shape roof of a train station. I've included a plan (google earth) and some reference pictures.

Take a look at OBJECTiVE - an example image is attached. For more info take a look at http://www.encina.co.uk/objective.html

Re: Modeling a Difficult Barrel Roof

Anonymous — Thu, 20 Nov 2008 20:04:46 GMT

Hi,
Can I just say this has been the most awkward task i've tried to do, and it's still not right The things I still cannot do are:

1. Create the cut away edge at the front right hand corner. If you look on the plan there is an angled edge along the front (left hand side).
2. Get the back (right hand on the plan) correct either.

Anyone have any ideas on how to get a more accurate model than the one I have managed to create?

Thanks for your time,
Rich

Re: Modeling a Difficult Barrel Roof

Dwight — Thu, 20 Nov 2008 20:12:24 GMT

USE SEO to slice the ends. SOLID ELEMENT OPERATIONS...

And if the shell actually tapers, use my overlapping moosh technique.

Re: Modeling a Difficult Barrel Roof

Anonymous — Thu, 20 Nov 2008 21:52:57 GMT

Dwight wrote:
USE SEO to slice the ends. SOLID ELEMENT OPERATIONS...

And if the shell actually tapers, use my overlapping moosh technique.

Don't forget that the SEO will not display correctly in plan, though. This might not be an issue for you in this case.

Re: Modeling a Difficult Barrel Roof

Erika Epstein — Thu, 20 Nov 2008 22:33:17 GMT

Rich,
Take a look at Ralph Wessel's Objective, he answered your post
http://www.encina.co.uk/objective.html
It's a great product and I believe free for students.

Re: Modeling a Difficult Barrel Roof

Anonymous — Fri, 21 Nov 2008 08:03:38 GMT

I'm not familiar with Objective. Do I understand correctly using "Split Objects in 3D" instead of SEO workaround, everything will show up fine in plan?

Re: Modeling a Difficult Barrel Roof

Ralph Wessel — Fri, 21 Nov 2008 16:19:29 GMT

Joeri wrote:
I'm not familiar with Objective. Do I understand correctly using "Split Objects in 3D" instead of SEO workaround, everything will show up fine in plan?

Yes, cutting objects shows up correctly in every view. There is an example here: http://archicad-talk.graphisoft.com/viewtopic.php?p=119267&highlight=#119267

Making the station profile with OBJECTiVE also has the added benefit that the form can be bent to a curve and simultaneously rise - it's not unusual for this to happen, especially for underground stations. And, as Erika pointed out, OBJECTiVE is free for educational users.

Re: Modeling a Difficult Barrel Roof

Anonymous — Fri, 21 Nov 2008 17:18:53 GMT

So, then this is what I'm looking for!
I have a commercial license so I'll visit your website for purchase, especially if you charge in US$