## krissywatts 2 years ago how do i calculate contour line? here is one triangle of the contour map

1. krissywatts

|dw:1353134091614:dw|

2. krissywatts

yes

3. irkiz

how did you get 42.5 below 40.5?

4. krissywatts

it was written down on my map

5. irkiz

hmm doesnt make sense... i find the scale factor

6. irkiz

126 is the true height difference?

7. krissywatts

and i had to measure the triangle to find the elevation which i measured out to be 126

8. krissywatts

@chemENGINEER do you know how to do this?

9. irkiz

the thing is i dont really understand your question... maybe if i had the original question then i can do it

10. krissywatts

i measure the triangles 1:20" scale

11. krissywatts

i'll try and upload it tomorrow because its huge

12. krissywatts

it is contour interpolation @AbhimanyuPudi

13. mark_o.

the elevation from 42.5 to 40.5 is correct in w/c you got elevation=2

14. mark_o.

average slope = rise / run

15. krissywatts

what do i do next?

16. krissywatts

do i multiply the 2 by 126 and divide by 2?

17. mark_o.

hmm i think you need to give all the info or the whole prob and pictures here, look like theyre incomplete