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Thread: Toposurface as drive??

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    All AUGI, all the time christo4robin's Avatar
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    I'm curious about those of you who split a toposurface to create a drive or road. Have you come up with a way to effectively show, say 8" of asphalt or 4" of concrete when you cut through the road/drive in a section view?

    I have typically used a combination of very thin pads and sloping floors to create drives - its tedious, but it displays well in sections. Doesn't work for warped surfaces which is why I'm asking about the toposurface solution.

    Thanks,

    Christopher

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    I could stop if I wanted to funkman's Avatar
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    Default Re: Toposurface as drive??

    This is one of my biggest gripes and I still dont think it is a satisfactory work around. We are often told if you can see it in more than one angle/section/drawing, then model it. But this cant be done with the topo tools currently.

    I am sure that just about every project will have a driveway. There must definitely be an ability for a topo to be given a depth option.

    Christopher, currently I am splitting the topo as you desribed and for the sections (some Councils request 1:20 sections of the driveway at DA stage) using fill regions over the driveway sections. As it is only a workaround, I dream for this topo tool to be better utlisied so that topo surfaces may be given depth controls, surface patterns and even controls over structural components so that one can lay sand beds and fills below the driveway - ie similar to floors command.

    Perhaps there is an ability for the split surface to be changed to a floor with smart properties that attach its boundary edges to the topo?

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    Revit Guru gregcashen's Avatar
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    Default Re: Toposurface as drive??

    If you really wanted to be able to do this now, I would look at using a sweep family. Settng the path up would be the hardest part, but after that, it would be straightforward.

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    I could stop if I wanted to robmorfin's Avatar
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    Default Re: Toposurface as drive??

    A sweep would not work, a road is an irregular surface in its 3 axis (X,Y,Z), or tell me, do you make your topo out of sweeps, I don't think so, there should be a tool that allows surfaces to have a thickness and its own material, for roads, driveways and sidewalks, in other words, it should be part of the pad tool, but not flat, irregular (nor sweeps), and as the pad, it should cap the sides of the adjacent splitted surfaces, now if you pull points from one of the Splitted surfaces, it leaves a hole on a side of the other splitted surface, which doesn't happen when you make a flat pad.

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    The CADSmith Chad Smith's Avatar
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    Default Re: Toposurface as drive??

    Robmorfin: That's exactly what I would like to see in the topography tools.

    Refer my WISHLIST LINK

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    Revit Guru gregcashen's Avatar
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    Default Re: Toposurface as drive??

    Quote Originally Posted by robmorfin
    A sweep would not work, a road is an irregular surface in its 3 axis (X,Y,Z), or tell me, do you make your topo out of sweeps, I don't think so, there should be a tool that allows surfaces to have a thickness and its own material, for roads, driveways and sidewalks, in other words, it should be part of the pad tool, but not flat, irregular (nor sweeps), and as the pad, it should cap the sides of the adjacent splitted surfaces, now if you pull points from one of the Splitted surfaces, it leaves a hole on a side of the other splitted surface, which doesn't happen when you make a flat pad.
    Road cross sections, in general, are pretty uniform. The path is not, but that is exactly what a sweep is designed to do. If you know what you're doing, a sweep can travel in x,y,z axes and have a constant cross section, which is pretty much what I would expect of a road tool anyway. If I had to assign a bunch of different road cross sections along the centerline, I would probably be looking at, say, Civil Series or something. Sweeps will do what the user requests.

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    I could stop if I wanted to robmorfin's Avatar
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    Default Re: Toposurface as drive??

    topo cannot be made out of sweeps, and roads are topo, sweeps are weak and can only extrude a 2D object in one direction.

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    AUGI Addict PeterJ's Avatar
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    Default Re: Toposurface as drive??

    Why not use a drafting view and a standard detail and then just use some spot elevations on the driveway? Anything more than rudimentary road setting would be outside the architect;s remit surely, driveways and the like can really be dealt with as standard drafting components.

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    Revit Guru gregcashen's Avatar
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    Default Re: Toposurface as drive??

    Quote Originally Posted by robmorfin
    topo cannot be made out of sweeps, and roads are topo, sweeps are weak and can only extrude a 2D object in one direction.
    Ummm...you're wrong. Sorry. Sweeps and blends are the two most powerful tools in the Revit goemetry modelling toolbox. I can draw a sweep in all three dimensions, no problem. I also just created a simple 3D sweep of family category topo. Took a while, though. About 2 minutes.


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    Revit Technical Specialist - Autodesk Scott D Davis's Avatar
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    Default Re: Toposurface as drive??

    I'm lookng forward to the sweep-blend in 6.1

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