SPD Grading Vignette

Site Grading & Site Design Vignettes and Multiple Choice

SPD Grading Vignette

Postby pgroy » Sat Jan 13, 2018 3:34 pm

Please see attached SPD Grading Vignette. Testing in two weeks. Please advice.
What is a good distance to keep between the two tips at the leveled contour: in this case 108.
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Re: SPD Grading Vignette

Postby knaveboy » Fri Jan 19, 2018 8:53 am

I think they could be closer together. Have you read Sparky83's post about minimum slope errors? He addresses this issue in that post.

I would have failed this vignette if I hadn't read that post. I don't see any sketch lines in your solution-how do you know that the distance between contours is < 50', particularly between 105 and 106 on the south side of the display?
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