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Thread: Dimensioning Sloped Glazing Mullions

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    BIM there, done that cliff collins's Avatar
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    Dimensioning Sloped Glazing Mullions

    Searched here, but didn't find anything.

    Has anyone figured out a good/correct way to dimension mullions in sloped glazing?
    i.e. on a roof plan, or in a glazing elevation.

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    Forum Co-Founder Alfredo Medina's Avatar
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    Hi, Cliff,

    Some time ago I did a complex model with a lot of sloped mullions. Everything was sloped at different angles; walls and roof panels. Right, Dave Jones? The solution was to create views that were perpendicular to each plane, using first a named reference plane that follows the slope, and then a section view that follows the reference plane. Then you can take true dimensions in those views. Not easy, but doable.

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    Quote Originally Posted by Alfredo Medina View Post
    Hi, Cliff,

    Some time ago I did a complex model with a lot of sloped mullions. Everything was sloped at different angles; walls and roof panels. Right, Dave Jones? The solution was to create views that were perpendicular to each plane, using first a named reference plane that follows the slope, and then a section view that follows the reference plane. Then you can take true dimensions in those views. Not easy, but doable.
    Not easy is a bit of an understatement! This is the structure that Alf helped me model and dimension:
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	FB Salad Bar.jpg 
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ID:	39616  

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    Not exactly an answer (I think Alf & Dave got that covered), but Paul Aubin's recent Slanted walls Tips & Tricks video on LinkedIn Learning/Lynda.com included some interesting tips relative to slanted curtainwalls.

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    BIM there, done that cliff collins's Avatar
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    yep--that is what we have done. thanks!

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    Forum Co-Founder Alfredo Medina's Avatar
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    Quote Originally Posted by Alfredo Medina View Post
    Hi, Cliff,
    Some time ago I did a complex model with a lot of sloped mullions. Everything was sloped at different angles; walls and roof panels. Right, Dave Jones? The solution was to create views that were perpendicular to each plane, using first a named reference plane that follows the slope, and then a section view that follows the reference plane. Then you can take true dimensions in those views. Not easy, but doable.
    Some of the section views were showing panels with a rotation in relation to the titleblock, so the final step was to rotate the viewport in the view to a precise angle, so that the base of the panel was presented horizontally on the sheet.
    Last edited by Alfredo Medina; October 23rd, 2020 at 07:29 PM.

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    Quote Originally Posted by Alfredo Medina View Post
    By default, the section view along a slanted plane produces a view that is rotated in relation to the titleblock, as well, so the final step was to rotate the viewport on the sheet to a precise angle, so that the base of the panel was horizontal on the sheet.
    I would have posted copies of shop dwg sheets showing what Alf is talking about but am contractually unable to do so. I wish that I could though, they are some beautiful shop drawings Over 400 E sized sheets for the overall project just for curtain walls. The project was Facebook Bldg 21, Menlo Park, CA.

    https://www.youtube.com/watch?v=1acAEcaiysc

    The Salad Bar restaurant structure shown in the above screen shot is shown at about 1 minute into the video.

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    Forum Co-Founder Alfredo Medina's Avatar
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    Quote Originally Posted by Dave Jones View Post
    ...The Salad Bar restaurant structure shown in the above screen shot is shown at about 1 minute into the video.
    Ah, first time I see it! Thanks!

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    Dimensioning Sloped Glazing Mullions

    Quote Originally Posted by Alfredo Medina View Post
    Ah, first time I see it! Thanks!
    Actually, in real life, me too. My whole life has been 2D/3D Revit or 2D drawings. I rarely have seen the fruit of my labor (the actual project) in person. I did visit the Stratosphere Tower in Las Vegas a couple of years ago. Its amazing to see a real live building after having looked at in 2D on a monitor for 2 years. I guess I miss working


    Sent from my iPad using Tapatalk

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    Just a question but why dimension them at all? Wouldn't a table with Mark, and Length be sufficient in conjunction with a plan showing mark tags?

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