The tip of a tower of 210m height is just visible above the hor: From an observer with an eye height of 1.35m. What is the distar petween the tower and the observer considering curvature and refraction?
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- An offshore drilling rig is being towed out to sea. What is the maximum distance awaythat the navigation lights can still be seen by an observer standing at the shoreline?The observer’s eye height is 5'8", and the uppermost navigation light is 230 ft abovethe water.What is the description of the weather station? What is the usage of it in some experiments in hydrostatics?Problem 2. The table below shows stadia readings taken by a transit set at point A between two points X and Y with stadia interval factor of 100.80 and stadia constant of 0.381. a) Find the horizontal length of line XY. b) Determine the elevation of Point A if the elevation Y is 100 m and HI=1 m c) Determine the difference in elevation between points X and Y.
- Two observation towers A and B are located 300 ft apart, as shown. An object on the ground between the towers is ob-served at point C, and the observer on tower A notes that the angle CAB is 68° 10′. At the same time, the observer on tower B notes that the angle CBA is 72° 30′. Assuming a horizontal surface and towers of equal height, how far is the object from each tower and how high are the towers?The table shows stadia readings taken by a transit set point A between two points X and Y with stadia Interval factor of 100.80 and stadia constant of 0.381 Find the length of line XY. Determine the elevation at point A if elevation Y is 100m and HI=1m. Determine the difference in elevation between points X and Y.What is the length of this arc in centimeters? Round the answer to the nearerhundredth.
- Two towers are of equal height. At a point P on levelground between them, the angle of elevation of the topof the nearer tower is 60° and at a point M 24 metersdirectly away from point P, the angle of elevation of thetop of the nearer tower is 45°. How high is each tower ? (SKETCH YOUR SOLUTION)a) What is the stadia constant of the instrument? b) What is the stadia interval factor? c) What is the horizontal distance between points B & C? d) What is the difference in elevation between B & C? SHOW COMPLETE AND CLEAR SOLUTION AND ILLUSTRATION/FIGURE.A stadia rod held at a distant point B is sighted by an instrument set up at A. The upper and lower stadia hair readings were observed as 1.205m and 0.875m, respectively. If the stadia interval factor (K) is 99.8, and the instrument constant (C) is 0.3m, determine the length of line AB in meters.