Donate Now Goal amount for this year: 3000 USD, Received: 1207 USD (40%)

Results 1 to 2 of 2

Thread: Truss family behaves wierd

  1. #1
    New Member
    Join Date
    September 30, 2016
    Posts
    1
    Current Local Time
    10:01 AM

    Truss family behaves wierd

    Hi out there


    I am trying to create a truss in families, to make a one side angled roof like my experiment shown in the middle. I understand the basics of families, and have spend hours watching tutorials online. Unfortunately i get some wierd behavior when i try to change angles in the Family. I have attached my latest attempt Family5.rfa. Can you help me with some inputs on what i do wrong?


    Truss family behaves wierd-project1.jpg

    -Thomas
    Attached Files Attached Files

  2. #2
    Senior Member
    Join Date
    December 16, 2010
    Posts
    849
    Current Local Time
    08:01 PM
    First off, I would recommend not using a "truss" family for this, as it's just a beam with the ends chamfered off.
    You are just over complicating your life.

    Just use a beam. Place a reference plane at either end that follows the angle of your end-cut. Now just cut the geometry of the beam to the reference planes.

    If you make this a group (beam + reference plane at each end) then you can copy that beam around your roof as required and edit only one and the entire set of beams will update.

    If you wish to place it on the Skillion slope of the roof, the easiest way is to create a reference plane at the underside of your roof line in a section. Name that reference plane (in the properties box once you select it) and name it something logical like "Skillion Roof Bldg 1 Top of Rafter" or whatever suits.

    Go to a plan view
    Now under the structure tab on the far right go to the "define workplane" and choose the "Skillion Roof Bldg 1 Top of Rafter" name and NOW in your plan view place your wooden beam family (justified at top of beam) and then go through the process of cutting the geometry to the other end cut reference planes.

    The truss family is used (like in the image) for a component which is comprised of a Top and Bottom chord, and web pieces. What you are creating is just a simple beam, no need to complicate your life for no benefit.

    Oh and also the family you provided is pretty much empty.
    Attached Thumbnails Attached Thumbnails Truss family behaves wierd-05-10-2016-09-47-45.png  
    Last edited by Karalon10; October 5th, 2016 at 08:11 AM.

Similar Threads

  1. Wierd room bounding in closed worksets problem
    By josephpeel in forum MEP - General
    Replies: 2
    Last Post: December 10th, 2014, 11:46 AM
  2. How to create fixed-length truss family?
    By tlipiec in forum Structure - Family Creation
    Replies: 1
    Last Post: February 6th, 2014, 03:15 AM
  3. Truss Family Hidden by Slab
    By gdoherty0102 in forum Structure - General Questions
    Replies: 6
    Last Post: November 7th, 2012, 08:27 PM
  4. Truss Family Template
    By dzatto in forum Architecture - Family Creation
    Replies: 9
    Last Post: February 7th, 2012, 09:36 PM
  5. Truss Family
    By MartinGT in forum Structure - Family Creation
    Replies: 2
    Last Post: October 28th, 2011, 07:07 PM

Tags for this Thread

Posting Permissions

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