leveling and bore alignment B Flashcards
grout spacing between machine base and foundation
3/4 to 1.5 inches
laser strength of laser
class 2 with 1 mw
type of measurement for checking flat surface up to 10 locations
straightness
type of measurement: a cross measurement is taken and two diagonal straightness measurement are made on the object being measured
flatness
type of measurement: laser beam guided through an angular prism that reflects the laser exactly 90 degree.
perpendicularity
type of measurement: requires a minimum of two tripods and an angular prism
parallelism
construction grade laser accuracy
1/4 per 100ft
fine laser accuracy
1/32 per 600ft
use of coincidence striding level
level reference
use of plumb aligner
vertical reference
use of optical square
perpendicular reference
rough adjustment on tilting level
fish eye
fine adjustment on tilting level
coincidence bubble
operating temperature of optical equipment
-20 to 50C