RevitCity.com Logo

Home  |  Forums  |  Downloads  |  Gallery  |  News & Articles  |  Resources  |  Jobs  |  FAQ  |  SearchSearch  |  Join  |  LoginLogin

Welcome !

221 Users Online (96 Members): Show Users Online - Most ever was 626 - Mon, Jan 12, 2015 at 2:00:17 PM

 

Forums

Forums >> Revit Building >> Technical Support >> Multiple sloping slab on grade

Search this ThreadSearch this Thread | Page 1 of 1 |

Mon, Sep 26, 2005 at 8:46:11 PM | Multiple sloping slab on grade

#1

JAMIER


active

Joined: Tue, Jul 26, 2005
14 Posts
No Rating


What is the best way to show multiple slopes for slab on grade? It is for a lower level condo parking garage. The slab slopes to middle of bays with perimeter of bays (4 sides) being the high side.

This user is offline

 

Mon, Sep 26, 2005 at 10:35:04 PM | RE: Multiple sloping slab on grade

#2

Mr Spot


site moderator|||
Mr Spot Avatar

Joined: Tue, Jan 13, 2004
2889 Posts
4.5 Stars: 92 Votes


Not sure as i haven't used revit structural before. Revit Building doesn't have the ability to give floors multiple slopes. Work arounds include modelling an in-place floor with all the extra slopes etc modelled as voids/solids of various types. This can also be an external generic model floor familiy that is then embed into an in-place floor family in the project. Other option is to use a roof as opposed to a floor as they allow multiple slopes to an extent... HTH.

This user is offline

View Website

Tue, Sep 27, 2005 at 12:07:06 AM | RE: Multiple sloping slab on grade

#3

Rythmick


active

Joined: Fri, Apr 23, 2004
160 Posts
5 Stars: 2 Votes


Not sure if I'm following correctly, but if you are making a rectangular slab drain to the center you would need to make four separate triangle slabs that point to the center and apply the slope to each.

This user is offline

View Website

Tue, Sep 27, 2005 at 2:50:26 AM | RE: Multiple sloping slab on grade

#4

JAMIER


active

Joined: Tue, Jul 26, 2005
14 Posts
No Rating


Thanks to both. It looks like the 4 triangles will work for what I am doing for now. However, I will have more advanced slopes where I will have to explore Mr. Spot's approach. I will have to keep digging into the help files. thanks again!!

This user is offline

 

Tue, Sep 27, 2005 at 4:23:21 PM | RE: Multiple sloping slab on grade

#5

Rythmick


active

Joined: Fri, Apr 23, 2004
160 Posts
5 Stars: 2 Votes


Yes, creating blend voids to cut the slope would be a great approach, especially if you want the bottom to remain flat, as in a sloped pour on a subfloor. You would have to make two void blends to sandwich the slab to make the bottom slope also.

This user is offline

View Website

Tue, Sep 27, 2005 at 4:50:01 PM | RE: Multiple sloping slab on grade

#6

Rythmick


active

Joined: Fri, Apr 23, 2004
160 Posts
5 Stars: 2 Votes


I think the void blend is really the way to go - its real fast also.

Attached Images

Slpoed Slab.jpg

This user is offline

View Website

Tue, Sep 27, 2005 at 5:19:11 PM | RE: Multiple sloping slab on grade

#7

Rythmick


active

Joined: Fri, Apr 23, 2004
160 Posts
5 Stars: 2 Votes


I realised to make the bottom void cut correct you need to create a void sweep with a path around the perimeter and a wedge shape profile from the outside to the center for the cut out. Edit: oops! -that only works for a square, for a rectangle the sweep would need to be made for each side. - guess its back to the 4 triangles for simple rectangular slab with sloping bottom! Post edited on 2005-09-27 12:24:38 Post edited on 2005-09-27 12:41:59 Post edited on 2005-09-27 12:45:11

Attached Images

4Slpoed Slab.jpg

This user is offline

View Website

Wed, Sep 28, 2005 at 12:14:43 PM | RE: Multiple sloping slab on grade

#8

JAMIER


active

Joined: Tue, Jul 26, 2005
14 Posts
No Rating


WOW!! You guys make this look so easy. I am currenlty having problems with voids forms and solid forms. When I go to finish a void I get the error "Some Void Forms of this family do not cut anything and will be deleted. To make a Void Form cut something else use the Cut Geometry tool.' The help files only tells me a brief description of what the tools do and maybe a picture that is a box, not and actual structural senario. Any info on where I can find additional material for reading up and mastering this stuff. Thanks again for the help, you certainly have given me some stuff to look into and try to reproduce.

This user is offline

 

Wed, Sep 28, 2005 at 10:28:26 PM | RE: Multiple sloping slab on grade

#9

Mr Spot


site moderator|||
Mr Spot Avatar

Joined: Tue, Jan 13, 2004
2889 Posts
4.5 Stars: 92 Votes


By default voids will only cut elements created before them (within the same family). To tell a void to cut a solid created sequentially later than itself. Select the cut geometry tool, pick the void and then the element you wish it to cut. Voids can only cut system families (walls, floors, roofs etc) and they should be the same category family as the element you want to cut (with the exception of doors/windows...) HTH.

This user is offline

View Website

Thu, Sep 29, 2005 at 4:20:27 AM | RE: Multiple sloping slab on grade

#10

Rythmick


active

Joined: Fri, Apr 23, 2004
160 Posts
5 Stars: 2 Votes


You need to use the cut tool with the void to make your cut before you complete and exit the void family or else you will lose the void when you exit the family. One trick I use when I've created a void that is not cutting as I expect but I want to keep the family shape without making a cut at the moment is to turn the void into a solid (by it's properties) so you can finish and exit the family then come back to it at a later time by editing the solid and turning it back into a void.

This user is offline

View Website

Search this ThreadSearch this Thread | Page 1 of 1 |



Similar Threads

Thread/Thread Starter

Forum

Last Post

Replies

How to model residential garage slab on grade with slope and stem walls

General Discussion >> Revit Project Management

Thu, Oct 10, 2013 at 8:30:52 PM

4

Auditorium: multiple levels/slopes slab on grade approach.

Revit Building >> Technical Support

Sat, Jan 30, 2010 at 10:20:42 PM

2

Slab Edge Strategy - Revit 2014

Revit Building >> Technical Support

Wed, Jan 14, 2015 at 7:34:02 PM

1

Thickened Slab Edge on Sloping Slabs

Revit Structure >> Technical Support

Thu, Apr 16, 2009 at 8:39:08 PM

0

Sloping paving slab?

Revit Building >> Technical Support

Sun, Apr 22, 2007 at 11:30:26 PM

5

Site Stats

Members:

1756358

Objects:

22370

Forum Posts:

151876

Job Listings:

3

Sponsored Ads

Home | Forums | Downloads | Gallery | News & Articles | Resources | Jobs | Search | Advertise | About RevitCity.com | Link To Us | Site Map | Member List | Firm List | Contact Us

Copyright 2003-2010 Pierced Media LC, a design company. All Rights Reserved.

Page generation time: 0.9196

Login

User Name:

Password:

Remember Me  

Forgot Password?

Search Forums

Advanced Search

Search Forums

Advanced Search


Clear Highlights


Clear Highlights