Author Topic: How can I extend my datum line to finish level surface  (Read 2588 times)

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ekoneo

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How can I extend my datum line to finish level surface
« on: June 20, 2014, 11:36:34 AM »
I have a big problem. I try to create a datum level. I want to extend my datum level to the finished surface. In the fill section datum level should keep superelevation. Also in the cut sections datum level line must be extended to the finish level vertically.

In the attached photo my subbessembly and a section view are given.
I try to thousands of codding parameters and marked points.. but no result up to now.
Can anybody help me?

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #1 on: June 20, 2014, 11:43:01 AM »
First I think you misunderstand what is DATUM as defined within the assembly and sub assembly.

DATUM - is the limit of cut within each sub-assembly.

If you are attempting to force some form of 'over excavation', your assembly will need to be defined differently.

Please provide a sketch of what you want your section to define, not what you have that isn't working.
Then I can advise further.
Be your Best


Michael Farrell
http://primeservicesglobal.com/

ekoneo

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Re: How can I extend my datum line to finish level surface
« Reply #2 on: June 20, 2014, 01:07:56 PM »
Thanks mjfarrell. Sory for my poor English  :|

I want to calculate cut and fill volumes between existing ground and a road surface.
As I figured at my atached photos there are three different conditions.
1-) At an all fill section my roads bottom link goes on during all section and it should end at the daylight's last point
2-) At an all cut section my roads bottom link must be end at the end of sidewalk's last point.
3-) At a mix section my roads bottom link must be a combination of two conditions.

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #3 on: June 20, 2014, 02:11:47 PM »
This to get you thinking about it, while I create some assemblies to illustrate.

First you are going to need to create a 'helper' assembly and a 'helper' corridor from same.
These two are going to give you a combination of surface and or feature lines to use as targets
to be assigned in your Final Design corridor, this because you can not use a surface create by a
corridor as a target within the same corridor; due to circular reference being avoided.

Now let me create some geometry and simulate your condition(s).
Be your Best


Michael Farrell
http://primeservicesglobal.com/

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #4 on: June 20, 2014, 02:32:58 PM »
This is the helper assembly, mostly generic links with TWO conditional assemblies on the ends.
One looks at CUT the other for FILL to create your desired design slopes.
The generic assemblies will use super elevation slopes.

This is done to get a target surface as stated earlier that your final assembly(ies) will use.
Be your Best


Michael Farrell
http://primeservicesglobal.com/

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #5 on: June 20, 2014, 02:38:40 PM »
Here is the helper corridor, notice your Vertical CUT slope condition is met, and your 1:1 FILL section is met.

From this corridor the TOP Surface links are used to create a surface.
Be your Best


Michael Farrell
http://primeservicesglobal.com/

ekoneo

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Re: How can I extend my datum line to finish level surface
« Reply #6 on: June 20, 2014, 02:43:27 PM »
wonderful work.. mjfarrell Thanks a lot.
I start to examine your post. I try to make a similar one.
I ll reply the result  :lol:

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #7 on: June 20, 2014, 02:55:22 PM »
Then you will add these three pieces to your Existing Assembly (do this to both sides)
Three Generic Links, one vertical at pavement depth or all the way to base course.
Then a link width and slope, don't worry about width or slope right now
Then a Link Slope to surface

The key is in the assembly properties you will tell the first horizontal link to get it information from bottom link of your pavement section, and the outside link to surface will get it's slope from either the link before it or the same pavement/ subgrade link.

I left your section out for clarity.

Now build your design corridor with this assembly, and trget the surface from the helper corridor.
When you are done using him set his display properties to invisible.
« Last Edit: June 20, 2014, 03:12:42 PM by mjfarrell »
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Michael Farrell
http://primeservicesglobal.com/

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #8 on: June 20, 2014, 02:57:19 PM »
TIP:

NAME your components very carefully and it is easy to do this.

BAD names = no fun
Be your Best


Michael Farrell
http://primeservicesglobal.com/

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #9 on: June 20, 2014, 03:17:51 PM »
that helper assembly may also need extensions to the vertical surface downward from the link attachment.
This so that the subgrade line will intersect with it properly later
« Last Edit: June 20, 2014, 03:36:50 PM by mjfarrell »
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Michael Farrell
http://primeservicesglobal.com/

ekoneo

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Re: How can I extend my datum line to finish level surface
« Reply #10 on: June 21, 2014, 04:47:37 AM »
Hi mjfarrell,
Thank you so much.
I get good result with your way that creating helper corridor.
Also I learned things more than my expection. Such as under assembly properties, defining slope forom any subbassembly. This is great information for me.
Then with your help I find another way to do my work. I use LinkSlopesBetweenPoints. I put a marker point at the end of linkSlopeToSurface subassemblies.
I set slope1 from the assembly properties as you show us. I set slope2 linkSlopeToSurface's slope similarly. Lastly I set Ditchwith as 0. So This produced a new point that is extension of these points depending on superelevation and daylight elevation.

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #11 on: June 21, 2014, 08:11:59 AM »
As a teacher it is a great pleasure to see such results from my work.
You are very welcome!
Be your Best


Michael Farrell
http://primeservicesglobal.com/

mjfarrell

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Re: How can I extend my datum line to finish level surface
« Reply #12 on: June 21, 2014, 11:22:17 AM »
You might see some other ideas here:  http://www.theswamp.org/index.php?topic=13092.0
Be your Best


Michael Farrell
http://primeservicesglobal.com/