Leveling and Bore Alignment

Question 1

what 5 basic questions can be answered using optical equipment?

Answer 1

is it level?
is it flat?
is it plumb?
is it straight?
is it square?

Question 2

________________ are used as reference points to set the final elevations of installed machinery?

Answer 2

benchmarks

Question 3

what term means to align to the vertical?

Answer 3

plumb

Question 4

when passing from a thinner medium to a thicker one, the light is always refracted _____________ the normal

Answer 4

towards

Question 5

what is another name for crosshairs?

Answer 5

reticle

Question 6

what is designed to be used so that no matter what angle the incident rays enter, the refracted rays leave at 90 degrees?

Answer 6

penta-prism

Question 7

what is normally used for he rough levelling of optical equipment?

Answer 7

fish eye level

Question 8

the purpose of a __________________is to establish a level plane strictly for the levelling procedures

Answer 8

tilting level

Question 9

optical leveling refers to the process of determining the difference in _________ or _________ between two points

Answer 9

level
height

Question 10

with the __________________________ attachment, optical instruments can be used to measure with a precision as close as 0.0001”, but more commonly 0.001”

Answer 10

optical micrometer

Question 11

all optical levelling equipment is basically composed of a telescope with a spirit level, attached in such a manner that when the spirit level is centred, the line of sight through the telescope is _________________

Answer 11

horizontal

Question 12

to maintain accuracy, it is important to keep the __________________ an equal distance from the back sight and the fore site

Answer 12

instrument

Question 13

auto-collimation is similar to auto-reflection, but it is more_______________

Answer 13

accurate

Question 14

what are 3 groups of laser tools used in the industry?

Answer 14

high accuracy- long distance
high accuracy - short distance
construction grade

Question 15

which safety classification do laser tools fall into?

Answer 15

class II less than 1 mW

Question 16

why is a space left between the sole plate and a foundation?

Answer 16

for grout

Question 17

short distance laser beams are:

A) invisible
B) visible in the daylight

Answer 17

B - visible in the daylight

Question 18

what is the accuracy of a construction grade level?

Answer 18

1/4” over 100 ft

Question 19

optical levelling equipment is composed of a ___________ with a spirit level attached

Answer 19

telescope

Question 20

what are 3 optical instruments used for levelling equipment?

Answer 20

alignment telescope
theodolite
tilting level
jig transit

Question 21

a __________________ is used to identify thermal growth in the horizontal plane

Answer 21

jig transit

Question 22

what does an optical square have in it?

Answer 22

penta-prism