Question 2 RL PP.PPP (m) RL QQ.QQQ (m) 65.732 64.939 Table Q2 show the levelling data obtained from levelling fieldwork carry out by surveyor to transfer reduce level from BM A (with actual RL= PP.PPP m) to TBM 1 and the levelling end (Close) at BM B (with actual RL = QQ.QQQ m). If total distance from BM A to BM B is 350m. Applying height of plane collimation (HPC) calculation method, perform arithmetic and accuracy verification, correction and calculate final reduced level. Then determine gradient between BM A %3D and BM B? Point BS IS FS HPC RL Corr. Final RL (m) 2.005 (m) (m) (m) (m) (PP.PPP) (m) (m) ВМ А P1 2.585 CP1 1.905 2.425 P2 2.105 P3 2.455 TBM1 2.360 2.305 P4 -1.585 BM B 2.325 (QQ.QQQ)

N Rod ++ 50 1+50 1+75 2.6 Complete the set of differential leveling notes in Table 2-5, and perform the arithmetic 2.5 Prepare a set of profile leveling notes for the survey in Figure 2-34. In addition to comput- ing all elevations, show the arithmetic check and the resulting error in closure. check. 5.11 4.66 3.98 1.20 1.80 TP 2 4.42 4.30 2.01 Known Elevation is 402.78 4.72 TP 1 BM 61 Elevation = %3D 396.74 FIGURE 2-34 5-35 ()

Q.3. A levelling table is given below. a) Calculate the elevations of every station given in the table and show the arithmetic check. If there is an error, please distribute it to the elevations. E = 40* K b) Đraw an illustrative figure for the levelling survey given in the table. Distance Is FS Station BS H.I. Elevation (m) (m) BM A 0.916 1486.813 90 1 1.020 80 1.860 90 3 0.173 1.376 60 4 0.112 1.769 90 5 1.008 3.511 130 1.360 90 7 0.740 110 8 0.688 0.707 70 ВМ В 1.176 1481.201 2.