The text below should give a bit of background to my problem
"Recommendation.— Where a change in slope on a taxiway cannot be avoided, the change should be such that, from any
point:— 3 m above the taxiway, it will be possible to see the whole surface of the taxiway for a distance of at least 300 m fromthat point, where the code letter is C, D, E or F;"
I've created a profile of the surface for an existing taxiway, I've created a copy of that profile and elevated it 3 meters. I don't know what to do next.
I've used the visibility check command in Civil 3d but I'm not sure of the method. I want to set the visibility height to 0.0. because of the text above.
Review Visibility Checker and sight distance.
In Prospector, expand the Surfaces branch, right click on the Runway surface, chose the select option
On the TIN Surface contexutal tab, analyz panel, choose Visibility Check, Zone of Visual Influence
At the specify location of opject prompt enter the location of where the view is from
At the specify height of object prompt, enter 3 for 3m
Specify the radus of vision extent per the requirements needed.
Green means the 3m location is completely visible which is what you want.
Yellow means patially visible
Red indicates not visible
The sight distance can be set to 3m
and the target to zero
and then the resulting arrow shows where the intersection is if any.
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