# Thread: Civil drafting school project help

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Dink87522, i attached the project booklet. am on page 13. i was able to do the 2 on the example, but then i don't know if i should use the same 90-foot and 80-foot contour for all the elevations.
thank you all for replaying.

civil d. booklet.pdf

2. Hey gusy i went ahead and finish the roadways and trees. i just need to do the contour lines. page 8 says 10-foot contour intervals. does it mean from the 90-foot (top left corner)to the right will be 100 and from the 90-foot to the bottom 80-foot. and from the 100 to the bottom 90-foot and so on. do i make any sence?

civil d. roadways.jpg

3. Thank you guys for your help.

4. ## Interpolation help

That PDF help remind me what I did. I used example 2 bottom of page 12. Some of the info from the first example is also used.

As you read through the instructions write out a math equation.

For instance:
93.8 – 88.9 = 4.9 x 10 = 49

50 / 49 = 1.0204082

1.0204082 x 11 = 11.22

11.22 is the distance to the right of the benchmark.

You will have to perform this calculation for each spot elevation. Just use the same formula. Do one row at a time from table 3 page 10. Remember that even though the row in the table is vertical, on the drawing row one is horizontal.

This is what the couture’s should look like.

is what I remember most while doing this.

5. car5858 i gess am not asking the right question. i got the calculation you posted. the 11 is from 90-footcontour-88.9=1.1 (11).
now that i see the picture, the real question i have is; the 100', 110', 120' east of the 90' on your image, is that because page 8 says 10-foot contour intervals?
i feel am asking dumb questions. sorry.

6. Almost done with plate 1.
Thank you.

7. I see that you got the idea. Were the questions so dumb???? You still got the answer. Way to go

8. Hey guys i have been working on this, day and night , because the end is near. Am about to start plate 3 page 21. it says to use vertical scale of 1"=10' and horiz. of 1"=60'. does it mean that for every inch of the drive way am placing it 10' longer? what is the best way to start this driveway profile and section A profile.
Please help thak you.

9. Originally Posted by Autocadstudent
it says to use vertical scale of 1"=10' and horiz. of 1"=60'. what is the best way to start this driveway profile and section A profile.
Please help thak you.
It means each inch on the drawing will be 60' Horiz. Every inch in elevation will be 10'

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Car5858, Am looking at the image and still don't get it. i have a hard time starting somenthing but when i get i get it.
if the driveway profile starts at the centerline. can i copy it from my plate 2 and scale to 10' vertical and 60' horizontal? are those red lines the grid lines? i see the 130 going up by ten' and the zero to 60'. are those the grid lines from the first drawing? am sorry for asking this kind of question.

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