AutoCAD/Sketchup - Quick software calculation of DDA compliant levels

Hi, Someone MUST have created a software or addon that quickly calculates DDA compliant levels. I use a combination of AutoCAD and Sketchup currently, along with a useful excel sheet to calculate them, but there has got to be a quicker way. 

Can anyone recommend an easy-to-use software for this?

Or can we generate spot heights in Sketchup somehow?

Thanks,

Neil.

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Neil, I'm curious to talk with your more about the verifications your are needing, but I believe the site information modeling in Vectorworks Landmark software would meet your needs. Integrated 2D/3D site specific design/modeling with built in worksheets which report from the objects you are designing. Including grade objects which can act like a calculator for allowable slopes and can also modify the surfaces to the expected slopes. Let me know if I can help further.

Eric, yes please message me if you wish neil.morbey@thelandmarkpractice.com

Here is an example of the situation I want to improve upon:
We are provided with (i) an AutoCAD topographic model of a site and (ii) a building design with a FFL (level).
We want to take spot heights form both (fixed points) and within a design of paths we want to
a) Have cross-falls not exceeding 1:40
b) Drain away from the building and into soft landscape areas
c) Ensure no path exceeds 1:20 grade
d) Ensure no soft areas exceed 1:3 grade.

What I want is a software which will model the landscape with these parameters. Perhaps one way would be to set ‘fixed levels’, ‘pedestrian zones’ and ‘soft landscape zones’.

And I would like the ability to change the design and have the levels adjust for me.

If your software can do that I’d love a demo.

Would like to see the solution to this, as well.  

Eric or Neil - Can you post it online so all can benefit?  Thanks!

Could you please explain how it worked for you? Even I have studied AutoCAD, I don't have any practical experience.

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