2020-2021 Flashcards
Surveying uses the techniques of ________.
Geometry and trigonometry
Historically, distances were measured _________.
Through the use of chains with links of a known length.
Early surveyors learned that the simplest method to measure height was with an altimeter. The altimeter they used was basically a________.
Barometer
Theodolites have been used to measure angles since
1571
Distance is defined as the amount of ________between two things.
Space
Although some drawings refer to sea level, it is usually changed to __________.
An elevation above finished floor
The term “ plumb” means that the work is truly perpendicular to _________.
Level
Transferring a benchmark may be accomplished with the use of a_______.
Rotating laser
The horizontal starting points for column lines and other measurements are called _______.
Control lines
A______compass may be used to draw and divide circles larger than those made by a regular pair of compasses
Beam
The advantage of the open case on an engineer’s tape is it _______.
Is easy to clean any debris that might get caught in the tape
Some measuring tapes do not have zero start at the end of the blade. They will start a foot back. This is called a(n)
Dead foot
If you are using a measuring tape around electric hazard, it would probably be best to choose a(n)_______blade.
Fiberglass
At which of the following temperatures will a steel tape read true to the manufacturer’s standards?
68 degrees Fahrenheit
To keep measuring tape from sagging, an ironworker should use a constant tension handle, and pull the tape with one pound of pressure for each ______feet of tape
10
Plumb bobs are being replaced by optical plummets and handheld lasers because _______.
A plumb bob will move on a strong wind
In the early days of skyscrapers, workers would dampen any swinging movement of the plumb bob by ______.
Hanging the weight in a container of oil
When using a level, an object or surface is level when _______.
The bubble in the video is centered between the two lines on the vial
The Philadelphia rod is a graduated roof made of two sections and can be extended from ______to 13 feet or longer.
7
Laser distance measuring tools are also known as _______.
Electronic tape measures
A Pythagoras button on a laser distance measuring device can be used to _______.
Calculate the third side of a triangle
The combination square is composed of primarily two parts: a rule and a_____.
Head
The most common tool used to make measurement marks on metal is the______.
Scribe
Trammels, or trammel points, are the sockets or cursors that, together with a beam, make up a_________.
Beam Compass
A chalk line is used for marking straight lines. These types of lines are made by stretching the line taught between two points, and then ________the line or string.
Snapping
