Friday, December 14, 2012

SLOPE CALCULATION FROM SOIL MAP - ADA TUNGKU & BIRAU PENYELIDEKAN

TUNGKU

Instrument:

Ruler - mm, Measure linear the scale on the map . 750m is 71.5mm
Distance between two point is ratio of the scale


BIRAU PENYELIDEKAN
Linear Measurement is made on Computer Screen where 750m equal 110m
The map distances are measure on screen as well. Thus ration is base on screen measurement.


Red line 1,2,3,4 are the slopes to be measured









BIRAU PENYELIDEKAN SLOPE  MEASUREMENT
Slope measure map linear Distance no PERCENT 
No  mm scale mm=750m measure/linear meter contours tan degrees SLOPE
scale x hight=y x/y 100*x/y
u uX750m 4 kontour
1 8 110 0.072727273 54.54545 40 0.733333 36.25 73.33333
2 13 110 0.118181818 88.63636 60 0.676923 34.09 67.69231
3 6.5 110 0.059090909 44.31818 50 1.128205 48.45 112.8205
4 8 110 0.072727273 54.54545 50 0.916667 42.51 91.66667
5 20 110 0.181818182 136.3636 80 0.586667 30.4 58.66667
6 12 110 0.109090909 81.81818 30 0.366667 20.14 36.66667
7 19 110 0.172727273 129.5455 10 0.077193 4.41 7.719298

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