Results 1 to 3 of 3

Thread: single parameter re-size sweep-blend based on locked angle constraints

  1. #1
    Junior Member
    Join Date
    July 12, 2012
    Posts
    10
    Current Local Time
    02:12 AM

    Not allowed! Not allowed!

    single parameter re-size sweep-blend based on locked angle constraints

    Hello

    I am creating a splayed skylight with 3 splayed walls and a single vertical wall (2'-4"always). I have created it using a swept blend with two perfect squares, and then cropping the top at the design (altitude) angle. This creates a trapazoidal "window" at the top of the skylight with a square base. (see the attached picture).

    I would like to be able to size this parametrically using the base length (profile 1 of the swept blend). When I try this, however, the angle constraints are not maintained because the path length and (top) profile 2 do not move and size with the parameter (the profile 1).

    My end goal, however, is to create several types of skylights all with a trapazoid of area 9 SF (or as close to it as possible), with varying altitudes (in the picture, this is angle 55 degrees) I thought to do this by trial and error, varying the bottom square and then find the area of the top trapazoid and then adjust and repeat. If there is a way to size it based on the altitude angle and end area of the trapazoid, that would be ideal.

    PS. I know that I could work in CME, but I chose to work in generic family modeling for speed.

    Thank you for all the help you can offer

    -ArielClick image for larger version. 

Name:	Capture.jpg 
Views:	37 
Size:	103.1 KB 
ID:	9007

  2. #2
    Moderator cellophane's Avatar
    Join Date
    August 9, 2011
    Location
    Louisville, KY
    Posts
    6,333
    Current Local Time
    05:12 AM

    Not allowed! Not allowed!
    Odds are it will involve multiple formulas - if you havent seen it, look here: http://www.revitforum.org/tutorials-...day-usage.html

    Past that I am terrible at that type of thing and can't offer much help

  3. #3
    Forum Co-Founder Alfredo Medina's Avatar
    Join Date
    December 7, 2010
    Location
    Orlando, FL, USA
    Posts
    3,226
    Current Local Time
    05:12 AM

    Not allowed! Not allowed!
    This family is complex, due to all the requirements that you have listed: 3 slanted wall sides, one vertical wall side, a square base, a right angle at the top of the section view, and a top surface that is a trapezoid, slanted, at a variable angle, at a certain height, and with a certain area: 9 sf...

    It would be very difficult to do it with just the 'standard' families. It's better if you combine families from the standard and the 'adaptive' template, where you can control the top of the prism with a true parametric trapezoidal family.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	prism_square_base_trapezoid_top.jpg 
Views:	33 
Size:	105.6 KB 
ID:	9035  

Similar Threads

  1. Revit Server - Locked Files
    By snowyweston in forum Worksharing, Revit Server & C4R
    Replies: 2
    Last Post: May 9th, 2012, 05:54 AM
  2. Blend Too Thin
    By dzatto in forum Architecture and General Revit Questions
    Replies: 16
    Last Post: April 3rd, 2012, 08:00 PM
  3. locked wall layers
    By Pickens in forum Architecture and General Revit Questions
    Replies: 0
    Last Post: February 14th, 2012, 04:07 AM
  4. Face Based VS Wall Based VS Non-Host with Void Families
    By Parametric Snowman in forum Architecture and General Revit Questions
    Replies: 13
    Last Post: December 16th, 2011, 04:20 PM
  5. Face Based Wall Cut Angle and/or Curtian System Corners
    By The Dropper in forum Architecture and General Revit Questions
    Replies: 2
    Last Post: April 4th, 2011, 07:38 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
  •