are 200t apart as shown in fig aThe Q4 A level is set up mid

are 200t apart as shown in fig (a).The Q4) A level is set up midway between two stakes that rod reading on A is 5.61 t and it is 8.72 ft at B. The level is the moved to point A as shown in ig (b). A reading of 5.42 ft is taken on rod at A; the level is the sighted on the rod held on stake B, where the reading of 8.57 ft is noted 14.marckal @a.what is the correct difference in elevatin between stakes A and B 1 ft b. If the level had been in perfect what reading would have been observed at B from second setup? c. What is the line sight error in one ft? Gom,go m 5.61 9.42

Solution

a) True Difference = 8.72 - 5.61 = 3.11

b) Correct rod reading = 5.42 + 3.11 = 8.53 ft.; on A

c) Error is +0.04 in 200 ft., or .00002 ft/ft