In a topographic survey undertaken by Karman Surv. Corp. before any leveling is conducted. The engineers usually check whether the engineers level is in perfect adjustment. A two peg test is used to check whether the line of sight is in perfect adjustment and the following rod readings are taken, with instrument set up near A, backsight on A is 1.623 m. and foresight reading on B is 2.875 m. with the instrument set up near B, backsight on B is 1.622 m. and foresight on A is 0.362 m. Compute the difference in elevation between A and B. What should be the correct rod reading on A to give a level line of sight with the instrument still set up at B? What should have been the reading on B with the instrument at A to give a level line of sight?
In a topographic
Corp. before any leveling is conducted. The engineers
usually check whether the engineers level is in perfect
adjustment. A two peg test is used to check whether the
line of sight is in perfect adjustment and the following
rod readings are taken, with instrument set up near A,
backsight on A is 1.623 m. and foresight reading on B is
2.875 m. with the instrument set up near B, backsight on
B is 1.622 m. and foresight on A is 0.362 m.
Compute the difference in elevation between A
and B.
What should be the correct rod reading on A to
give a level line of sight with the instrument still
set up at B?
What should have been the reading on B with the
instrument at A to give a level line of sight?
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