RevitCity.com Logo

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

Welcome !

184 Users Online (48 Members): Show Users Online - Most ever was 626 - Mon, Jan 12, 2015 at 2:00:17 PM

 

Forums

Forums >> Revit Building >> Technical Support >> new slabs, existing slabs, and the nature of constraint(s)

Search this ThreadSearch this Thread | Page 1 of 1 |

Wed, Dec 11, 2013 at 5:07:15 PM | new slabs, existing slabs, and the nature of constraint(s)

#1

dhoff13


active

Joined: Wed, Apr 27, 2011
3 Posts
No Rating


I'm working on remodeling an existing warehouse. The existing floor slab is not even close to being level (as much as an 18" drop across the space). I have modeled the existing slab with a generic floor, which I then pulled down in one corner with a control point.

My plan is to pour new slabs on top of the existing slab in order to create level surfaces in the building. I need to keep quantities accurate, so is there anyway to model the new slab so that its bottom face is constrained to the shape of the exsiting slab?

I've attached a picture, but please let me know if the question doesn't make sense.



Attached Images

126807_claification.jpg

This user is offline

 

Wed, Dec 11, 2013 at 5:13:25 PM | new slabs, existing slabs, and the nature of constraint(s)

#2

WWHub


site moderator|||

Joined: Tue, May 16, 2006
13079 Posts
3.5 Stars: 380 Votes


For quantity purposes, the only way I can see to do this is to make a slab as deep as your deepest area then use an in-place void to cut the bottom away as you have described.


This user is offline

 

Wed, Dec 11, 2013 at 6:00:56 PM | new slabs, existing slabs, and the nature of constraint(s)

#3

dhoff13


active

Joined: Wed, Apr 27, 2011
3 Posts
No Rating


That would definitely work.

My walls can simply attach to the existing floor. they will continue to match the slope even if i change them (or the floor) after they are built. Is there not a way to make the new floor slab do the same? In a perfect world, the bottom surface of the new slab would by constrained to the top surface of the existing slab, can that be done?


This user is offline

 

Wed, Dec 11, 2013 at 6:10:04 PM | new slabs, existing slabs, and the nature of constraint(s)

#4

WWHub


site moderator|||

Joined: Tue, May 16, 2006
13079 Posts
3.5 Stars: 380 Votes


No.

 

I did an experiment creating a sloping slab then another flat slab taht filled the area to flat.  I looked at the volumn of both slabs then joined the two.  The flat slab alwyas stayed complete (no matter what creation order) and the sloping slab was cut to the bottom of the flat slab.  A worthy experiment but wrong results.


This user is offline

 

Wed, Dec 11, 2013 at 6:21:24 PM | new slabs, existing slabs, and the nature of constraint(s)

#5

AbsoluteBIM


active
AbsoluteBIM Avatar

Joined: Fri, Jun 17, 2011
220 Posts
3.5 Stars: 3 Votes


i can't comment on your revit question but would like to warn you about your intended construction. If you intent to have a slab with a vanishing thickness; the thinner portions will be very fragile and will likely fall apart with just foot traffic. Usually a concrete topping will maintain a minimum thickness (consult the concrete contractor) to ensure durability. Just a note of warning. 


This user is offline

 

Search this ThreadSearch this Thread | Page 1 of 1 |



Similar Threads

Thread/Thread Starter

Forum

Last Post

Replies

Sloped slabs and spot elevations

Revit Building >> Technical Support

Thu, Mar 6, 2008 at 7:18:13 PM

3

Floor slabs showing dashed instead of Solid

Revit Building >> Technical Support

Wed, Jun 5, 2013 at 10:53:00 PM

12

Walls cutting slabs

Revit Structure >> Technical Support

Fri, Jan 23, 2009 at 7:57:20 PM

6

highrise towers slabs-walls joining

Revit Building >> Technical Support

Tue, Jun 1, 2004 at 11:18:09 PM

5

Concrete Slabs with compound angles???

Revit Structure >> Technical Support

Wed, Feb 4, 2009 at 5:28:45 PM

2

Site Stats

Members:

1842315

Objects:

22620

Forum Posts:

152043

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: 0.2017

Login

User Name:

Password:

Remember Me  

Forgot Password?

Search Forums

Advanced Search

Search Forums

Advanced Search


Clear Highlights


Clear Highlights