Question

eadi 2 Normal Strong Subtitle ie Subtle Em... Intense E.. aph Styles Answer the following questions: 1. To meet Class II, Second Order accuracies, what would be the maximum misclosure of a level run of two kilometers? 2. What is the recommended leveling method for meeting the Class II Second Order Standard? 3. Fill in the missing data in the sample differential level run below: Station B.S. ) В.М. А TP.1 H.I FS. ( Elevation 256.18 253.75 top Pipe) 4.05 6.48 10.26 259.01 254.01 250.45 5.26 T.P. 2 T.P.3 B.M. B 7.56 2.56 245.56 7.08 (243.39) A= B- c= E= 4. In the above problem. what is the misclosure? If the distance traversed from BM. A to BM. B is 5km, determine which level and order of levelling was performed 5. Define shimmer. What approach should be adopted while levelling to minimize the effect of shimmer? 6. What is the impact of a tilt in rod while levelling uphill or downhill? ▼iri' | Emphasis Heading 1 Heading 2 TNormal Strong Subtitle itle Subtle Em... Intense E... Styles laboratory against a standard that has been compared to the National Standard of Length. 8. To meet Class II, Second Order accuracies, what would be the maximum spacing between bench mark in km? 9. While performing precision leveling, how frequently should the collimation error be determined? What is the permissible value for First order, class I 10. How many existing benchmarks should be tied in while performing first order, class II leveling?

Answer 1

1. 11.31 mm

2. Three-wire, double-run or single-run double simultaneous procedure

3.

A = 260.23

B = 249.97

C = 251.45

D = 8.45

E = 4.89

F = 243.37

4. Misclosure = -.02 ft., t.p.#2 = 251.46

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