Two Peg Test

FIELD give way TITLE FIELD WORK TITLE Two joystick test INTRODUCTION INTRODUCTION Two settle Test is a surveying operation carried emerge to determine whether the leveling bubble and telescope line of sight ar parallel. OBJECTIVE OBJECTIVE Peg Test is a surveying operation carried out to determine if the leveling bubble (bubble axis) and telescope line-of-sight (line of collimation) ar parallel. TOOLS TOOLS Dumpy levelTripod staff Tape Bubble staff FIELD WORK PROCEDURE FIELD WORK PROCEDURE . for each one group is required to perform a peg test to check the instrument. ii. Each person in the group is record the results of the Peg Test in their own depicted object book. iii. act out and mark on the ground (with wooden pegs driven into the ground) two detail some 15 m apart. iv. Instrument is set up midway between two point A and B. v. Staff is read on each staff point A and point B and the height rest is calculated. Made sure the bubble staff is center vi. Next, instrument is moved about 5m behind the point B. nd staff at point A and point B is read. vii. Record the data. dissolver RESULT Point A1 point B1 =1. 312 1. 310 =0. 002m Point A2 point B2 =1. 239 1. 238 =0. 001m STN 1 STN 2 = 0. 002 0. 001 =0. 001m =1mm ? 2mm ANALYSIS ANALYSIS The error is 2mm so it can be accepted. The instrument is in good condition and can used in field work. CONCLUSION CONCLUSION The instrument can be determined the leveling bubble (bubble axis) and telescope line-of-sight (line of collimation) are parallel.