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Mon, Aug 4, 2008 at 6:36:16 AM | exposed rafter tails

#1

dnicholson


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Hi all,

I am trying to do a roof which is a tin roof finish (colourbond roof), at the eaves there is no gutter or fascia or soffit, just the tin sitting on exposed rafter tails (cut perpendicular to the roof pitch). 

at the moment i can get it right on the sections but then it obviously appears on the elevs as a deep continuous fascia, or i change the fascia depth to just the tin finish depth so the elevs look correct and then i guess i could draw the rafters on there, but then the secion cut is wrong.

thanks. 


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Mon, Aug 4, 2008 at 6:42:13 AM | exposed rafter tails

#2

Mr Spot


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We typically hide the roof model and draw a line based detail component of the appropriate profile. in perpendicular sections.

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Mon, Aug 4, 2008 at 6:53:13 AM | exposed rafter tails

#3

dnicholson


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sorry im very much a beginner.  do you mean you 'hide in view' the roof on your section drawing and use detail lines to draw over it showing the correct shape rafter end at the eaves?

ive found some other threads on creating the rafter ends in elevation, so i guess its just getting the section right without it creating a solid depth on the elevations along the roof where the depth of rafter is shown.


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Mon, Aug 4, 2008 at 6:58:53 AM | exposed rafter tails

#4

Mr Spot


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No Worries.

 

I would model the roof as just the Colorbond Cladding. Then I would typically model the rafters as structural beams.  However, it would also depend on the size of the project.  If it was a particular large project I might just model the rafter tails separately.

And no I don't hide in view, I would use the linework tool "Invisible lines" to hide the cut line and redraw it using the correct profile.  That way the roof surface will still conceal the objects it should be concealling.


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Mon, Aug 4, 2008 at 7:25:34 AM | exposed rafter tails

#5

dnicholson


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sweet thats sorted my sections thanks. using the invisible line tool which i never even knew about.

just gotta try some of these methods of modelling the exposed rafters, its only a house not a large project. saw something about using the ballustrade tool to model them which sounded effective.


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Mon, Aug 4, 2008 at 12:38:57 PM | exposed rafter tails

#6

latemore


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hi have not been here for awhile, and saw mr spot answering. mr spot taught us all a few years ago to think first of using revit as though for a real building, then if needed to revert to drafting techniques on views.  i have adopted the former nearly all the time since, and i can tell you that it saves time over a project, even though it seems labourious at the time.  i would suggest in future you consider doing what mr spot says and model a roof sheet, rafters, even battens.  then your 3d views and right down to detail level will be right with no drafting at all.  i know of one bdaq member (building designer assoc of queensland) using revit, who models every single piece of framing in a building, and it looks amazing. those drawings win awards every year, but the point is that his builders fight to work on his projects as they love his drawings and life is easy on site.  revit for real i say!

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Tue, Aug 5, 2008 at 12:24:34 AM | exposed rafter tails

#7

dnicholson


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I would love to be able to do that, i agree that is what revit should be, a complete working model of the building.

however, i have only done a three day course (and not a very thourough one either)  it would take me alot of time to figure out all these systems and when i try i cannot get anything accurate.  I am so pressed for time as we are so busy at the moment i had to convince my manager to let me do this in revit. I could have finished it much quicker in CAD but i want to get to grips with revit.

unfortunately i cant just jump on it for my first project and understand how to create framing.  need heaps more time playing.  so the questions will probably keep coming. i have nobody in my office who can use it to any higher level.

thanks guys.!!


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