Donate Now Goal amount for this year: 2500 USD, Received: 1869 USD (75%)

Results 1 to 9 of 9
Like Tree2Likes
  • 1 Post By Steve_Stafford
  • 1 Post By Steve_Stafford

Thread: Lookup Table issue

  1. #1
    Member
    Join Date
    May 9, 2013
    Posts
    55
    Current Local Time
    01:48 AM

    Lookup Table issue

    Hi There,
    I'm a newbie in Revit MEP .I want to create an elbow with angle constrained to 45 degree and 90 degree. For that i know that i have to use lookup table.I tried many times to embed lookup table into the family i have created.but i was not able to make use of lookup table in my family.I'm using Revit 2013.There is an option called "manage" in Revit 2014, with that we can embed Lookup Table into the family..Does it mean that we can't import lookup tables in families created in Revit 2013? I tried many of the ways suggested in different forums.But didn work.So please help me to figure out the problem i'm facing right now.

    Thanks in advance
    Sharannya

  2. #2
    Forum Addict josephpeel's Avatar
    Join Date
    May 3, 2012
    Posts
    1,403
    Current Local Time
    10:18 PM
    Embeded lookup tables is a new feature in R2014. In R2013 or earlier the information is stored in text (.csv) files stored in a central location (Which is set in the Revit.ini file). Can you not constrain the angle with a formula in the family?

    Personally I think a better approach is to allow any angle but have a parameter "Is Custom" that gets set to Yes if the angle or size of a fitting is non-standard. Then designers can draw what they like and you can use a filter to show things that are non-standard and need to be changed or custom made. The reason is piping and duct systems in revit behave much better when changed/moved/resized if the fittings are as flexible as possible and dont disconnect all the time.

  3. #3
    Member
    Join Date
    May 9, 2013
    Posts
    55
    Current Local Time
    01:48 AM
    Hi joseph,

    Your method seems appropriate (although I'm not sure if my client would prefer that). Thanks for your quick response.

    But please let me go a little deeper into my requirement. In simple words, I want it to be in such a manner that the user can only draw pipes at 3 specific angles, say, 15deg, 45deg and 90deg. If he tries to draw a line at 60deg, it won't draw the pipe even if he clicks the mouse button.
    So we don't have any errors popping up, but we have the "No entry" sign in place of the cursor if the angle is non-standard. (I have seen this somewhere, in a demo video).
    I feel this is the most straightforward way to let the user know that he isn't supposed to draw lines at any other angle.

    [Also, could you please let me know if there is a way to obtain this without making use of lookup tables at all? ]

    Thanks in advance,
    Sharannya

  4. #4
    Mr. Revit OpEd
    Join Date
    December 14, 2010
    Posts
    2,912
    Current Local Time
    01:18 PM
    Revit fittings are not in control, they respond to the pipe orientation as you sketch them. Make them too rigid and users will just get inundated with error messages.

    Jose wrote about
    using formulas to identify fittings that are out of compliance. He uses a special parameter that is available to pipe fittings called IsCustom to do what he demo's in the video on his blog.

    Also Revit 2014 introduced settings for angle that help constrain pipe and duct to specific angles. You can still sketch at any angle but when the second run of pipe is sketched Revit revises it to match the closest specified angle.
    Attached Thumbnails Attached Thumbnails Lookup Table issue-pipeangle.jpg  
    Last edited by Steve_Stafford; January 13th, 2014 at 03:51 PM.
    josephpeel likes this.

  5. #5
    Forum Addict josephpeel's Avatar
    Join Date
    May 3, 2012
    Posts
    1,403
    Current Local Time
    10:18 PM
    Thanks Steve. That's exactly the method I was alluding to. The pipe angles look interesting too, just a shame its not per system/material as it would be great for waste wster and such but for copper piping, that in reality can be bent a bit, it could get frustrating when standard angles dont quite meet up...

  6. #6
    Member
    Join Date
    May 9, 2013
    Posts
    55
    Current Local Time
    01:48 AM
    Hi,
    Thanks a lot for the response.
    I created a custom elbow of angle 45 degree with two types. In both types the angle remains the same and the elbow diameter changes. But when I tried using that in the project it wouldn’t connect to the pipe; instead an error message appeared. I have attached the bend family with this mail.
    Please take a look and suggest the required modification.

    Regards
    Sharannya
    Attached Files Attached Files

  7. #7
    Mr. Revit OpEd
    Join Date
    December 14, 2010
    Posts
    2,912
    Current Local Time
    01:18 PM
    Did you examine existing pipe fittings before you started this? It doesn't look like it because you've created yours oriented 90 degrees out of phase when compared to all other pipe fittings.

    Have a look at the attached PDF. It is a Family Editor Tutorial guide from an older version of Revit. There is a specific section on creating a pipe elbow.
    Attached Files Attached Files
    josephpeel likes this.

  8. #8
    Forum Addict josephpeel's Avatar
    Join Date
    May 3, 2012
    Posts
    1,403
    Current Local Time
    10:18 PM
    Wow, thats actually quite a good tutorial. Ive never seen one for fittings before, had to work it out by trial and error

  9. #9
    Member
    Join Date
    May 9, 2013
    Posts
    55
    Current Local Time
    01:48 AM
    Hi,
    Thank you so much for the tutorial. I tried creating one elbow. It worked..Thank you once again

Similar Threads

  1. Replies: 0
    Last Post: August 17th, 2013, 06:15 AM
  2. Replies: 0
    Last Post: June 21st, 2013, 07:45 AM
  3. I don't get lookup tables
    By narlee in forum MEP - General
    Replies: 8
    Last Post: May 1st, 2013, 05:09 PM
  4. Revit OpEd: Revit MEP - Lookup Table Issues
    By Revit OpEd in forum Blog Feeds
    Replies: 0
    Last Post: December 12th, 2011, 03:15 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •