A control point is? 1. a low point in a vertical curve. 2. a temporary turning p

Question

A control point is? 1. a low point in a vertical curve. 2. a temporary turning point. 3. any station in a horizontal or vertical control system. 4. only set by a licensed surveyor. The phrase tuning point (TP) in surveying is used in which type of survey? 1. horizontal control 2. hydrographic control 3. planimetric control 4. vertical control A datum is a: 1. level surface to which elevations are referenced 2. line from any point on the earth to the center 3. line perpendicular to the vertical 4. vertical distance from some known location

Explanation / Answer

QUESTION 68:

A control point is any point located on the ground in horizontal and vertical coordinate system.

QUESTION 69:

The phrase Turning point (TP) is used in vertical control. it is a temporary or permanent station which acts as a pivot between sequential instrument positions.

QUESTION 70:

A datum is a level surface to which elevations are referenced. The elevations of bench marks are given in terms of their heights above a selected level surface called a datum.

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