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Which method is not adopted for volume calculating?(a) From cross-section(b) From spot level(c) From contour(d) From plan |
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Answer» Right choice is (d) From plan To explain: Volume can be measured by a contour map, but the volume calculated by this method is approximate. It cannot be compared with the volume calculated by the cross-section method. As the full ground irregularities are not predicted by contours, and also as the contour intervals are not small, volume calculated from contours is likely to be an approximate one. To calculate volume by this method, general recommendations of contour interval is a maximum of 2 meters for a regular ground surface, and 0.5 meter for an irregular topography. |
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