Ag Mech I- 4.01: Construction levels and lasers

When setting up a tripod and a builder's level, the leveling screw should be adjusted until the:

• bubble is centered

• level rod is level

• plumb bob hits the ground

• tripod is level

If Steve is using a builder's level to lay out a building, the degree reading when the telescope is turned to mark a corner should be:

• 15*

• 30*

• 45*

• 90*

When laying out a building, taking two equal measurements of the diagonal corners means the the four corners are:

• not plumb

• not square

• square

• triangles

The person using a laser beam level for surveying knows that the receiver is on the same grade when a signal is seen or heard from the:

• lower sensor

• middle sensor

• rod person

• top sensor

If Abby needs to lay out a building using the 3-4-5 method, what measurement is used with 24' and 30' to make a square corner?

• 18'

• 24'

• 30'

• 60'

When one fails to hold the leveling rod up straight, the measurement will be:

• accurate

• inaccurate

• too short

• too small

To be certain that accurate readings are taken, the bubble in the leveling vial of a farm level should be checked:

• after each reading

• before and after each reading

• every hour

• once a day