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    <title>idea &amp;quot;Snap&amp;quot; topo surface to bottom of floor. en Revit Ideas</title>
    <link>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idi-p/7931606</link>
    <description>&lt;P&gt;I do a lot of work on hillsides, which means that I have a complicated situation with the dirt beneath the floors.&amp;nbsp; I deal with this mostly by creating split surfaces and deleting them, then using filled regions on the elevations and sections, but this is less than satisfactory.&amp;nbsp; Maybe I am going about this all wrong, but I would like a command that snaps the top of the topo surface to the bottom of the floor.&lt;/P&gt;</description>
    <pubDate>Fri, 13 Apr 2018 17:51:10 GMT</pubDate>
    <dc:creator>johnharwood5</dc:creator>
    <dc:date>2018-04-13T17:51:10Z</dc:date>
    <item>
      <title>"Snap" topo surface to bottom of floor.</title>
      <link>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idi-p/7931606</link>
      <description>&lt;P&gt;I do a lot of work on hillsides, which means that I have a complicated situation with the dirt beneath the floors.&amp;nbsp; I deal with this mostly by creating split surfaces and deleting them, then using filled regions on the elevations and sections, but this is less than satisfactory.&amp;nbsp; Maybe I am going about this all wrong, but I would like a command that snaps the top of the topo surface to the bottom of the floor.&lt;/P&gt;</description>
      <pubDate>Fri, 13 Apr 2018 17:51:10 GMT</pubDate>
      <guid>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idi-p/7931606</guid>
      <dc:creator>johnharwood5</dc:creator>
      <dc:date>2018-04-13T17:51:10Z</dc:date>
    </item>
    <item>
      <title>Re: "Snap" topo surface to bottom of floor.</title>
      <link>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idc-p/7933577#M19786</link>
      <description>&lt;P&gt;That is what "pads" are for. They hollow out a topo surface or extend a surface to the underside of the pad.&lt;/P&gt;</description>
      <pubDate>Sun, 15 Apr 2018 14:28:23 GMT</pubDate>
      <guid>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idc-p/7933577#M19786</guid>
      <dc:creator>Anonymous</dc:creator>
      <dc:date>2018-04-15T14:28:23Z</dc:date>
    </item>
    <item>
      <title>Re: "Snap" topo surface to bottom of floor.</title>
      <link>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idc-p/7933579#M19787</link>
      <description>I have discovered that command. Didactic learning tends to have gaps. Thanks a lot, I will do som e searching&lt;BR /&gt;&lt;BR /&gt;</description>
      <pubDate>Sun, 15 Apr 2018 14:33:06 GMT</pubDate>
      <guid>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idc-p/7933579#M19787</guid>
      <dc:creator>johnharwood5</dc:creator>
      <dc:date>2018-04-15T14:33:06Z</dc:date>
    </item>
    <item>
      <title>Re: "Snap" topo surface to bottom of floor.</title>
      <link>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idc-p/8279545#M22928</link>
      <description>&lt;P&gt;I have pretty much stopped using pads. I use split surfaces instead. Again, like OP, hillside work.&lt;/P&gt;&lt;P&gt;Some pads are on grade then extend past the grade into the air. Pads will suck the topo up to the underside of the pad. You often don't want this.&lt;/P&gt;&lt;P&gt;Also pads are very finicky. They can't overlap a split topo. They can't overlap each other. Getting them to snap to the correct edge is not reliable enough. The snapping has a looser tolerance than Revit's error tolerance.&lt;/P&gt;&lt;P&gt;The elevation points of a topo region that are covered by a pad still exist and still influence the surrounding topo (via triangulation). In "real life" as in real dirt this is not the case. So I have found split surface to more reliable, less Revit warnings.&lt;/P&gt;&lt;P&gt;Sometimes if you have split surfaces and add a pad to the project it will automagically merge some of your other split surfaces. I went over this issue with tech support, it was reproduced, but no solution at this time.&lt;/P&gt;&lt;P&gt;So making the points snappable to a horizontal element like underside of slab would be very helpful. Also the snapping to contiguous topo surface edges is pretty dodgy. That could use some improvement.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;Floor points have up and down draggable handles that can snap to things. This would be useful for topo points.&lt;/P&gt;&lt;P&gt;&amp;nbsp;&lt;/P&gt;&lt;P&gt;GChapp&lt;/P&gt;</description>
      <pubDate>Wed, 19 Sep 2018 20:58:31 GMT</pubDate>
      <guid>https://forums.autodesk.com/t5/revit-ideas/quot-snap-quot-topo-surface-to-bottom-of-floor/idc-p/8279545#M22928</guid>
      <dc:creator>gccdesign</dc:creator>
      <dc:date>2018-09-19T20:58:31Z</dc:date>
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