Assignment - (4) Open Leveling Circuit Student Name: Student ID: Section: CALCULATIONS PNT STAFF READINGS Backsight (Bs) Foresight (Fs) Backsight (Bs) Foresight (Fs) Top Middle Bottom Top Middle Bottom Check Distance Check Distance T(m) M(m) B (m) (m) (m) B (m) (mm) (m) (m) 1.665 1.536 1.407 Elevation Difference (m) Primary Elevation (m) Correction (m) Adjusted Elevation (m) (mm) BMA Rise (+) Fall (-) TP1 1.135 0.974 0.8122.203 2.072 1.941 TP2 1.250 1.124 0.998 2.864 2.700 2.537 TP3 2.372 2.236 2.101 2.488 2.362 2.237 TP4 1.527 1.413 1.301 1.437 1.302 1.167 TP5 2.097 1.994 1.890 0.985 0.874 0.764 TP6 1.803 1.639 1.475 0.925 0.825 0.725 TP7 1.399 1.256 1.1131.289 1.120 0.951 BMB 1.621 1.486 1.351 Check Meters Meters Millimeters The correct difference in elevation between BM A and BMB BMA - BMB BMB' = BMB Leveling Loop Misclosure (LLM) Allowable Misclosure (AM) 8 x vn BMA - BMB The observed difference in elevation between BM A and BM B' The sum of elevation differences measured from BM A to BM B' The total distance of the open circuit from BM A toward BM B' Rise + Fall Is the Loop misclosure/ smaller than the Allowable misclosure? LLM