MOT Construction Staging in OpenRoads (GEOPAK)

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Casey Schneider — Wed, 12 Jul 2023 22:24:24 GMT

Bentley hosted a Coffee Corner recently on this topic where the presenter does not suggest corridor clipping. Here is a link to the event: Staged Cross Sections

RE: MOT Construction Staging in OpenRoads (GEOPAK)

T T — Mon, 16 May 2022 12:43:59 GMT

My understanding is it will help you generating your desired MOT phases. Clipped areas wont show on your cross sections. The only other method that I know of is creating a corridor / corridors for each phase as described by Jason Harkless above. Any temporary end conditions/pavements/etc can be done by hanging them onto temporary alignments created for each phase (perhaps along the clipped areas).

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Matt Murphy — Mon, 16 May 2022 11:48:19 GMT

Using the Clip Mask tool would not help me in generating an MOT model though, correct? I need to create cross sections for two phases of construction and wanted to avoid remaking a lot of templates for each phase. Do you know of any other methods for clipping a model to generate phased sections?

RE: MOT Construction Staging in OpenRoads (GEOPAK)

T T — Sat, 14 May 2022 10:26:41 GMT

You need to use Clip Mask tool to do it. Corridor clipping tool can only be done in an active corridor in which you use another overlapping corridor or clipping shape as clipping area.

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Matt Murphy — Fri, 13 May 2022 19:43:59 GMT

I am currently in the process of creating staged cross sections and wanted to use this method. However, it seems the corridor clipping tool cannot be used on a referenced corridor. I have several sequential corridors that I wanted to reference into my MOT drawing and clip to cut sections. Of course I do not want to clip the original corridors, as they are the proposed design. Is the best option to create copies of the proposed corridor DGNs and clip them? I would rather not do this as I don't want to keep track of changes across these duplicate drawings. Or is there another workflow that I am missing?

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Taylor Brownlow — Wed, 04 Sep 2019 13:39:01 GMT

Thanks. The tool keeps making the program crash in my corridor files. In a clean file with a corridor the tool runs but doesn't create any volumes.

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Brian Doubek — Wed, 04 Sep 2019 13:35:47 GMT

Cut/fill volumes

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Taylor Brownlow — Wed, 04 Sep 2019 13:34:11 GMT

By running the earthwork do you mean create cut/fill volumes or element quantities?

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Brian Doubek — Wed, 04 Sep 2019 13:20:24 GMT

Right. When you get the corridor quantities, the clipping is not taken into account (I think there's even a disclaimer on the report), so you will get quantities for the entire corridor. In most cases, this is perfectly fine, we are only using corridor quantities to confirm our quantities as calculated otherwise based on the final/proposed condition. However, we always require earthwork by stage, and running cross sections from the clipped corridor, and then running the earthwork gets staged earthwork volumes.

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Taylor Brownlow — Wed, 04 Sep 2019 13:09:12 GMT

Is this just as simple as laying out a shape in the plan view and clipping the corridor to it? When I run the quantity report it reflects the whole corridor and not just the unclipped portion.

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Brian Doubek — Thu, 21 Mar 2019 18:34:24 GMT

I've found that the corridor clipping tool is the best way to develop staged cross sections. Those staged sections can then be used to run earthwork calculations.

I develop a complete corridor, then draw shapes using the stage construction lines as boundaries and add them as necessary to the corridor's clipping references. Once clipped, cut sections and run earthwork.

So far, so good.

RE: MOT Construction Staging in OpenRoads (GEOPAK)

steve nguttu — Thu, 14 Mar 2019 23:24:58 GMT

Brian, this is very helpful. Being that its being two years from this response, have you found a more efficient way of stage construction in inroads?

RE: MOT Construction Staging in OpenRoads (GEOPAK)

Jason Harkless — Wed, 21 Sep 2016 13:19:09 GMT

Brian,

What you are asking is quite a "age-old" issue. Here is one older solution (SS2, pre-OR) that would have to be modified a bit to work in OR, and would not get you anything but final design broken into pieces. The temporary detours, etc would still need to be created as individual corridors, but that was true both pre-OR and now.

The one spot where OR could be leveraged as a benefit over SS2 would be with corridor clipping. Let's say you are doing partial construction and only half of the road will be built in Ph1. Well, you could reference the overall design into your Ph1 file, then clip out the part not being built. If you needed a temporary end condition along this edge, you would need to create a linear element that uses the proposed pavement (or FG terrain) as its vertical, then run a linear template (or corridor) along that element. This is just one example, there are probably others as well.

I will also add that the good news is that Bentley is fully aware of the difficulties involved with this process and are looking into more efficient solutions to provide our users.