bother: ANALYTICAL METHOD OF PLOTTING CONTOURS
Objective: To learn the analytical manner of interpolation (or spacing) contour lines proportionally between points of known locations and elevations.
science lab EXERCISE OUTLINE
A. INSTRUMENTS & ACCESSORIES : Triangles, straight edge, metric scale, divider, pencil, pen, eraser, tincture paper, cartolina, scotch or making tape, and electronic calculator.
B. PROCEDURE :
1. This problem is an indorr lab get along which highlights a type of office/ drafting work need in topographic mapping. It will be assumed that the granted data were taken from an actual field observation.
2. The lab instructor has the option to use the prepared darta, revise it, or prepare a new set of data.
3. The accompanying tabulation gives elevations or points over the area of a 50m by 60m tract of land. The elevations were obtained by the gridiron method using 3-m squares. Point A-1 is located at the northwest corner of the lot and pont G-6 at the southeast corner. each(prenominal) elefations are in meters.
4. The requirements for this lab exercise are:
a. trace a contour map using a level scale of 1:125 with a contour breakup of 20 meters.
The proportional spacing of contour lines must whole be determined analytically.
b. The contour map should be drawn on a grid layout (see accompanying sketch). All essential map marginal information, elevation of points, labeling of horizontal and vertical grid lines, and etc. must likewise be indicated.
c. Use tracing paper with dimensions of at least 46 cm by 54 cm, and arrange the paper so the the longer situation is vertical.
d. Indicate the elevations of the following office contours: 1300, 1400 ad 1500m. the thickness of these index contours should be drawn heavier than the intermediate contours. Rfer to the illustrative sketch shoen below.
e. A total of 450 grid squares, as...If you want to get a wax essay, order it on our website: Orderessay
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