Donate Now Goal amount for this year: 2500 USD, Received: 1627 USD (65%)

Results 1 to 9 of 9
Like Tree2Likes
  • 1 Post By MPwuzhere
  • 1 Post By BLothian

Thread: Length is determine by angle

  1. #1
    Member mark2009's Avatar
    Join Date
    May 27, 2015
    Posts
    106
    Current Local Time
    02:37 PM

    Question Length is determine by angle

    Hey guys,

    Is there a way to determine the length by angle?


    Length is determine by angle-untitled.png

  2. #2
    The Moderator with No Imagination MPwuzhere's Avatar
    Join Date
    December 14, 2010
    Location
    Coeur d Alene, ID
    Posts
    4,783
    Current Local Time
    07:37 PM
    Remember when you were in high school and you said you would never use Trigonometry?

    Guess what....it's trigonometry....scroll down a little, you will find a reminder on how it works.
    mark2009 likes this.

  3. #3
    Member mark2009's Avatar
    Join Date
    May 27, 2015
    Posts
    106
    Current Local Time
    02:37 PM
    Yes a very long time ago.

  4. #4
    Moderator
    "RFO 2012 Spelling Bee Champion"
    Alex Cunningham's Avatar
    Join Date
    December 8, 2010
    Location
    Northern California
    Posts
    3,567
    Current Local Time
    07:37 PM
    You need at least two pieces of information to be able to find the length you are seeking. Having only one angle will not suffice in using trigonometry to find the length.

  5. #5
    Member mark2009's Avatar
    Join Date
    May 27, 2015
    Posts
    106
    Current Local Time
    02:37 PM
    Yes it's actually two.

  6. #6
    Member mark2009's Avatar
    Join Date
    May 27, 2015
    Posts
    106
    Current Local Time
    02:37 PM
    my drawing is incorrect

  7. #7
    Member BLothian's Avatar
    Join Date
    December 11, 2013
    Location
    Livingston, Scotland
    Posts
    465
    Current Local Time
    03:37 AM
    See the attached file, it could probably be simplified but I've had a bit too much Jack Daniels to think that clearly

    Anyway I added some length parameters to keep the segments the same size and it seems to work fine like a bi-fold door but I'm not sure what your purpose for this family is so my example might not suit. There is a formula which calculates the length in question and a reporting parameter for what the actual dimension is when the Angle B is adjusted to prove the formula is correct and hopefully answer your question.
    Attached Files Attached Files

  8. #8
    JBZ
    JBZ is offline
    Senior Member JBZ's Avatar
    Join Date
    December 17, 2010
    Location
    Los Angeles
    Posts
    670
    Current Local Time
    07:37 PM
    Quote Originally Posted by mark2009 View Post
    Hey guys,

    Is there a way to determine the length by angle?


    Click image for larger version. 

Name:	Untitled.png 
Views:	40 
Size:	12.9 KB 
ID:	25047

    Back in 2007 I posted a how-to...to create a design assist tool for slanted volumes, etc.
    All one needs to know are any 2 of the 3 pieces of info (rise, run, slope) voila... the math is explained in the posting but based on the parameter names I used these are the formulae:

    Run=Rise/tan(Slope)
    Slope=atan(Rise/Run)
    Slope Percentage=100*tan(Slope)

    With the result being a component that calcs either run, slope or rise, in concert with the rest

    1: Control Parameters: Rise & Slope; Run is derived from them.
    2: Control Parameters:
    Rise & Run; Slope is derived from them.
    3: Control Parameters:
    Slope & Run; Rise is derived from them.

    Fear and Loathing In a CAD vs. BIM World: Slanted Volumes...I guess the Ramp tool isn't enough?

  9. #9
    Member BLothian's Avatar
    Join Date
    December 11, 2013
    Location
    Livingston, Scotland
    Posts
    465
    Current Local Time
    03:37 AM
    Mark, did bother to look at my family? It does what you are looking for. I've revised it slightly to include a restrictor so that the extreme angles don't break the family. Just change the angle of the parameter Driving_Angle and the Length changes whilst maintaining the length of the panel segments. I'm only on 2015 so I cant see what your family contains.
    Attached Files Attached Files
    mark2009 likes this.

Similar Threads

  1. Limit Pipe length to practical standard length
    By amarkrish108 in forum MEP - General
    Replies: 3
    Last Post: January 8th, 2014, 01:27 AM
  2. Replies: 0
    Last Post: June 23rd, 2013, 11:45 PM
  3. Replies: 0
    Last Post: May 17th, 2013, 01:45 AM
  4. Replies: 0
    Last Post: December 6th, 2012, 10:45 PM
  5. IFC - how to export length instead of cut length on framing
    By leetkinda in forum Structure - General Questions
    Replies: 2
    Last Post: August 17th, 2011, 05:38 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
  •