(Solved): ANSWER LETTERS B, C, D, and E ACCORDINGLY PLEASE. DIFFERENTIAL LEVELING STATION BS HI FS BM1 1.285 T ...

DIFFERENTIAL LEVELING STATION BS HI FS BM1 1.285 TP1 2.314 2.345 TP2 1.562 1.301 TP3 2.721 2.380 TP4 0.895 1.789 TP5 2.645 2.456 TP6 3.125 0.764 TP7 0.865 0.897 TP8 1.239 2.987 TP9 2.413 2.309 TP10 1.234 1.506 TP11 2.345 2.908 TP12 3.456 2.113 TP13 1.654 2.222 TP14 2.321 1.559 TP15 0.789 2.727 TP16 0.456 3.408 TP17 0.123 2.322 TP18 1.546 1.110 BM2 1.111 IMPORTANT: DO NOT ROUND OFF DECIMAL PLACES. ELEVATION 111.110 M B. PROCEDURE 1. Designate the initial or reference point of the leveling route as BM1 and the final or terminal point as BM2. 2. Set up and level the instrument at a convenient location along the leveling route between BM1 and BM2. 3. Take and record a backsight reading on BM1. 4. Direct the rodman to establish a Turning Point 1 (TP1), not necessarily in a straight line with the BM1 and the instrument. 5. Take and record a foresight reading in TP1. 6. Transfer and set up the instrument at a suitable location beyond TP1 and take and record a backsight reading on TP1. 7. Direct the rodman to move a convenient distance ahead of the instrument and establish TP2. 8. Take and record a foresight on TP2. 9. Repeat the procedure until a foresight is finally taken on BM2. - Leveling Rod FS BS FS BM? HI? Elev. of BM? Elev. of BM? HI1 Elev. of TP, TP? ref. datum Horizontal Line of Sight - Difference in Elev. between BM, and BM? BM? C. DATA AND RESULTS STATION BS HI FS ELEVATION REMARKS D. COMPUTATIONS 1. Compute Heights of Instrument and Elevations. a. HI = ELEV + BS where: HI = height of instrument above a reference datum. BS = backsight reading on the rod (or plus sights) FS = foresight reading on the rod (or minus sights) Elev = elevation above a reference datum of a point sighted. 2. Difference in Elevation (DE) Compute the difference in elevation between BM1 and BM2 by subtracting the smaller value from the bigger value. 3. Arithmetic Check To check the accuracy of the arithmetical computations, add all backsights as well as all the foresights. The difference between these two sums must be equal to the difference in elevation between BM1 and BM2. b. ELEV = HI - FS E. SKETCH (Draw the ACTUAL figure of the field based on the computed data. Label all values completely.)